baber/WOPTO huggingface dataset:
Patent GB-591750-A (GB)
Title: Improvements in or relating to control systems for induction motors
IPC: B66C13/26
Filed: 1945-05-15
Abstract: 591,750. Control of A.C. motors. IGRANIC ELECTRIC CO., Ltd. May 15, 1945, No. 12167. Convention date, May 27, 1944. [Class 38(iii)] In a control system for braking or slowing down an induction motor by the use of currents flowing between the source and the motor primary, the connections to the source are interrupted in response to variation, to a given value, of the difference between the vector values of certain of said currents, such that this difference varies with variations in the motor speed. In Fig. 1, showing a hoist control system, the master controller MS in its hoisting positions closes contacts 12 and so closes hoisting switch H which by its auxiliary contacts d energises and closes the main switch M. Consequently the terminals T1, T2 and T3 of the hoist motor 5 are connected to the supply terminals 1, 2 and 3. Similarly in its lowering positions the controller MS by closing contacts 13 closes lowering switch L and main switch M, whereby the terminal T3 is connected-through the coil C1 of relay 20-to a point of an auto-transformer 10 of which part is connected across the supply terminals 2 and 3. The contacts 15 are closed in the " off " and in the first lowering position only and close switch L1 whereby terminal T2 is connected to one end of the auto-transformer through the opposing coil C2 of relay 20. The motor is thus connected to the supply with the primary phases so unbalanced as to produce a torque retarding the lowering of the hoist. On subsequent steps of the controller the unbalance is modified by the opening of switch L1-disconnecting coil C2-and the closure of switches L2-L4 in succession to connect terminal T2 to various tappings on the auto-transformer. Relay 20 will be lifted by coil C1 acting alone. On return of the controller to the " off " position switch L1 recloses. The contacts 14, which are open on the first hoisting position but closed in the " off " position and in the initial lowering positions, co-operate with the contacts d of relay 20 to make a circuit in parallel with contacts 13 whereby the main and lowering switches are maintained until the motor reaches such a low speed that the difference between the currents in the coils C1 and C2 will let the relay 20 drop. This difference, which is the vector difference of the currents in two of the phases, is dependent on motor speed and is three times the current in the third phase. In a modification, current transformers in the leads to terminals T2 and T3, connected together at an earthed point, supply the two relay coils. In another modification a single relay coil is either connected between the two junction points (one of which is earthed) of two current transformers forming a closed loop or is connected to the current transformers (36 and 37), as in Fig. 4, wherein also an inductance 40 and variable resistors 38 and 39 for calibrating the relay are connected across the relay coil C5. Specification 583,820 is referred to.
Patent GB-935355-A (GB)
Title: High-gradient magnetic cusp geometry
IPC: H05H1/11
Filed: 1962-03-29
Abstract: 935,355. Thermonuclear apparatus; discharge apparatus. UNITED STATES ATOMIC ENERGY COMMISSION. March 29, 1962 [June 23, 1961], No. 12201/62. Classes 39 (1) and 39 (4). Magnetic confinement apparatus comprises a first pair of concentric inner and outer magnetic mirror coils, a second pair of concentric inner and outer magnetic mirror coils spaced apart and in alignment with the first pair of coils, the coils being enclosed within an evacuated enclosure, means for energizing each of the outer coils to provide a field reinforcing the other, and means for energizing the inner coils to provide a field directed opposite to that of the outer coils, the combined effects of the fields producing a resultant magnetic field with at least one low field region in the centre of the space between the pairs of coils, the low field region being bounded by line cusps and point cusps. In Fig. 1 the two pairs of coils 1, 2 and 3, 4 energized as described above produce the magnetic field shown, with a central region 5 of low field bounded by convex lines of force which meet in two joint cusps on the axis of the coils and four line cusps following approximately 45 degrees lines from the axis. Plasma may be injected into this central region along the 45 degrees lines by two similar plasma guns 35 and 36, Fig. 2, which may be as described in Specification 916,854. In a modification, Fig. 5 (not shown), the central region is surrounded by a resonant cavity having perforated walls to which radio-frequency energy is supplied through a waveguide; the frequency is that of the electron cyclotron frequency in the region so that electrons are heated. In the arrangement shown in Fig. 1, the inner coils are energized with about three times as much current as the outer coils. If the current in the inner coils is increased the low field region becomes toroidal, Fig. 3 (not shown); if the current in the outer coils is increased two regions of the field, spaced apart along the axis, are formed, Fig. 4 (not shown).
Patent GB-718645-A (GB)
Title: Improvements in or relating to transmission devices
IPC: F16H1/28
Filed: 1952-05-14
Abstract: 718,645. Toothed gearing; reversing gearing; coupling gear wheels. CHANTIERS NAVALS DE LA CIOTAT, and VINCENT, M. May 14, 1952 [May 16, 1951], No. 12217/52. Classes 80 (1) and 80 (2) In epicyclic reduction gearing, particularly for marine propellers, and employing spur or helical teeth, the driven shaft 5 is fixed to. an annulus 12 and the driving shaft 1 is geared to a cage 3 carrying a number of stepped planet pairs 6, 7 which engage respectively a stationary reaction annulus 10 and the driven annulus 12, and the pinions 6, 7 are resiliently interconnected to equalize tooth pressures by means of torsion rods 9, each pinion 6 being rotatably mounted on the extended hub of the pinion 7. In order to provide for reverse propulsion, each stepped planet unit may comprise three pinions engaging three annuli-a driven annulus, a larger reaction annulus, and a smaller reaction annulus-the direction of rotation depending on which reaction annulus is held stationary. The annuli may be braked to effect a reversal. The torque transmitted may be measured by employing a hydraulic ram to prevent rotation of the reaction annulus and measuring the hydraulic pressure. For diesel engines the driving shaft may be directly connected to the cage 3, omitting the gearing 2.
Patent GB-873861-A (GB)
Title: Improvements in windscreen wipers
Inventor: MORAGHAN MARK FRANCIS
IPC: B60S1/38
Filed: 1959-04-10
Abstract: 873,861. Windscreen wipers. TRICOFOLBERTH Ltd. May 23, 1960 [April 10, 1959], No. 12239/59. Class 138(1). A wiper for curved windscreens has, at each end of its blade, a cross bar fitted with members, such as hard rubber rollers 24 or polythene sliding shoes, which engage the windscreen 18, to prevent excessive rocking of the blade. The cross bars may be continuous or in the form of two arms 20, 22 and may be fitted to the backing strip 4 of the blade or, as shown, to a harness 6.
Patent GB-724478-A (GB)
Title: Compressed frequency communication system
IPC: G10L25/93
Filed: 1953-05-04
Abstract: 724,478. Multiplex transmission. STANDARD TELEPHONES & CABLES, Ltd. May 4, 1953 [May 22, 1952], No. 12296/53. Drawings to Specification. Class 40 (4). Speech is transmitted over a channel 1 kilocycle wide by selecting two sub-bands corresponding to voiced and unvoiced sounds, e.g. 200-1200 and 1800-2800 cycles, shifting one or both sub-bands so that both occupy the same frequency range and transmitting them together with an identifying signal for controlling the restoration at the receiving end. A 3-channel system is described using channels 200-1200, 1800-2800 and 2800-3800 cycles. On channel 1, the voiced sounds (i.e. vowels and consonants like L, M, N) are sent unchanged, while unvoiced sounds (such as T, K, P) are shifted in frequency. On channel 2, the voiced sounds are shifted and the unvoiced sounds are unchanged. On channel 3 both are shifted but by different amounts. These results are effected by a switching relay which is controlled by a detector according as the instantaneous input consists of voiced or unvoiced sounds. The detector also controls an oscillator to send an identifying signal, e.g. 1290 or 1360 cycles for channel 1, and other frequencies within the range 1200-1800 cycles for channels 2 and 3. These signals are extracted at the receiver and control relays which in turn control frequencychanging apparatus for reconstituting the speech band. Several forms of detector are described depending on the different frequencies of voiced and unvoiced sounds and on the fact that voiced sounds are periodic and unvoiced sounds aperiodic.
Patent GB-343387-A (GB)
Title: Improvements in or relating to flyers for spinning, twisting and like frames
IPC: D01H7/40
Filed: 1930-04-22
Abstract: 343,387. Overhung flyers for spinning &c. frames. BLACK, G. B., 201, Brook Street, Dundee. April 22, 1930, No. 12300. [Class 120 (ii).] An overhung flyer for spinning twisting and like frames is mounted for rotation about a stationary yarn guiding tube 3 which is externally screw threaded at its upper end to engage with a nut 7 which is accommodated in a recess in the rail 4 and holds it fixed thereto. At its lower end the tube has a discous head or flange 9 with a flared opening for the yarn. The tube is also formed with a shoulder 8 to engage the underside of the rail 4. The flyer boss 1 is fixed to a driving wharl 2 and has upper and lower internal shoulders on which rest the outer races 5, 6 of upper and lower sets of ballbearings, which separate the flyer boss from the tube 3. Dust covers 10 arc fixed to the rail 4 to protect the upper set of ball-bearings.
Patent GB-201989-A (GB)
Title: Improvements in or relating to sustentation or propulsion of aircraft
IPC: B64C11/00
Filed: 1922-05-02
Abstract: 201,989. Purton, F. J. W., and Purton, P. A. May 2, 1922. Screw and like propellers for aircraft comprise cones A each having a series of vanes a<1> of gradually-increasing area around the larger end, and a flat or curved spiral plane a<2> extending for at least two and a half turns around the inner surface of the cone. The air collected by the vanes a<1> and plane a<2> may be delivered into a cone B. Two or more stationary or revolving rings a' of streamline section may be arranged about the whole or a part of the external circumference of the cone A, and the rings may be elliptical or circular. Rings a<4> may also be arranged on the cone B. Inclined vanes a<5> are arranged on the outside of the cone, to prevent rotation of the machine when falling with the propeller stopped. There may be one or more cones A, rotating in the same or different directions, which may be combined with any number of rotary or stationary cones B arranged as shown or inverted ; or the cones A and cones B may be on separate axes; or there may be two sets of cones A with or without cones B on the same axis as two propellers of the hind described in Specification 168,732, with a cone A and cone B alone. Or two or three pairs of cones A, B may be used with two or three such propellers or separate axes. In any case there may be one or more pairs of cones A, B in addition to any other sets. The various cones and propellers may differ in size on the same machine or in the same set.
Patent GB-378368-A (GB)
Title: Improvements in and relating to the construction of motor vehicles
IPC: B62D27/02
Filed: 1932-04-29
Abstract: 378,368. Vehicle bodies. ROHR, G., 8, Jaminstrasse, Cronberg, Taunus, Germany. April 29, 1932, No. 12406. Convention date, May 15, 1931. [Class 108 (i).] In vehicles in which the body posts are secured directly to the chassis longitudinals and in which both the post members and the chassis members are of box section the inner wall 2i of each post 2 is secured to the upper wall 1o of the chassis beam 1 near the inner edge by rivets &c. and the outer wall 2a of the post is secured to the outer wall 1a of the chassis beam 1 at the lower edge thereof. The post which is of box section throughout splays to a larger section to embrace the chassis beam 1 and is provided with flanges 2c, 2d, 2e. The beam 1 is preferably of the shape shown with projecting flanges 5, 6.
Patent GB-1168576-A (GB)
Title: Electric Furnace
IPC: F27D11/02
Filed: 1968-03-14
Abstract: 1,168,576. Continuous furnaces. CARBOR UNDUM CO. 14 March, 1968 [16 March, 1967], No. 12407/68. Heading F4B. [Also in Division H5] In order to convey granular material through a horizontal resistance tube 24 means e.g. hydraulic jacks 52 are provided for tilting the tube 24 and its surrounding casing 10 to the vertical and means are provided for rocking the casing 10 and tube 24 about the longitudinal axis of the tube. The casing 10 is secured to a cradle 28 comprising at each end a U shaped bracket 30 and a semicircular track 34, 36. The two tracks are joined by longitudinal braces 33 and are rockably supported by rollers 44 on supports 46. The rocking motion is imparted to the casing 10 by a motor driving a crank 74 connected by a connecting rod 78 to a post 86 mounted on a bracket 42 secured to one of the trucks 34, 36. Current is supplied to the resistance tube by graphite end slabs each of which comprises two half sections 16, 18 sealed together by ceramic fibres 23. Terminal blocks e.g. 92, secured to the end slabs, the slabs, and the ends of the resistance tube are cooled by water conduits passing through the blocks 92 and slabs and around the tube ends. The casing is filled with thermally insulating particles 26 e.g. carbon black particles. Granular material is fed at a controlled rate into a hopper 118 (Fig. 3) into tube 24 and collected in a gas-tight vessel 139. A gas-tight metal cover 133 is fitted over the exit end of the tube 24 and an inert gas at higher than atmospheric pressure is introduced into the tube 24 from a pipe 137. The inert gas bleeds through a porous ring 140 at the inlet end. A tube 122 opening into the centre of the resistance tube enables granular material to be directly introduced into the " hot zone " of tube. In Fig. 4 (not shown), granular material is fed into a refractory impervious alumina tube which lies coaxial with and within the resistance tube. The ends of the tubes are sealed by ceramic fibres therebetween and the space between them is filled with inert gas through inlet pipe 130 in end slab 12. With this arrangement, the furnace may operate with an oxidizing atmosphere. The resistance tube may be inductively heated.
Patent GB-272329-A (GB)
Title: A new or improved arch-support for flat-feet
IPC: A43B7/22
Filed: 1926-05-14
Abstract: 272,329. Knipe, S. C. M. May 14, 1926. Drawings to Specification. Deodorants and antiseptics.-A foot-arch support is medicated with a mixture of boracic acid, zinc oxide, camphor, starch and an insecticide.
Patent GB-458729-A (GB)
Title: Fluid pressure motors having pistons of the oscillating type
IPC: F02N7/08
Filed: 1935-04-23
Abstract: 458,729. Semi-rotary engines. COFFMAN, R. A., 4733, Center Avenue, Pittsburg, U.S.A. April 23, 1935, No. 12684/36. Divided out of 455,630. [Class 110 (ii)] [See also Group XXVII] In a fluid-pressure motor suitable for starting aeroplane and like engines, a rotary movement is imparted to a driving member 7 within a cylinder or chamber axially of which a driven member 17 is moved, into and out of engagement with a member 44 of the engine &c. to be started or driven, by means of a stationary cam 30 mounted in the housing of the motor and engaged by an element 23 carried by the member 17. The element 23 operates in conjunction with a spring 19 to engage with the cam 30 and positively to enforce the axial movement of the member 17 for both its clutching and unclutching operations. The motor is actuated by gases from the explosion of a cartridge in a breech block connected to the combustion chamber 49<1>. As shown in Fig. 2, the member 7, which is a sleeve carrying a vane moving in an annular chamber in the housing 5, is secured at 10 to a return spring 8 anchored at 9 to the motor housing. The driven sleeve 17 is splined in the sleeve 7 and a spring 19 tends to engage a clutch member 39 thereon with the engine member 44. The cam 30 is mounted in an extension 40 of the housing 5 and is engaged by the bolt 23, which slides in a sleeve 24 held in place by a pin 25 traversing a tube 26 carried by the sleeve 17 ; the bolt 23 is moved outwards by a spring 29 and its movement is limited by a pin 28 engaging a slot 27 in the sleeve 24. The bolt 23 bears against the face of the cam ring 30, which has a channel 33, Fig. 4, terminating in cam faces 36, 37 so that, on initial rotary movement of the sleeves 7, 17 the bolt 23 rides along the incline 36 into the channel 33, allowing the clutch member 39 to engage the engine member 44. During this movement, a cam surface 38, Fig. 3, in the channel 33 causes the bolt 23 to compress its spring 29. The inlet opening 34 adjacent to the incline 36 is deeper radially than the outlet opening 35 adjacent to the incline 37, so that the bolt 23 does not re-enter the channel 33 during the return movement of the sleeve 7 effected by the spring 8. Specifications 455,630 and 455,685 are referred to.
Patent GB-635685-A (GB)
Title: Improvements in footwear
IPC: A43B15/00
Filed: 1946-04-29
Abstract: 635,685. Footwear. MALING, R. April 29, 1946, No. 12865. [Class 17 (ii)] A platform unit comprising a sole piece 22 and heel piece 24 is secured in position loosely below a sock lining 18, by a covering of flexible sheet material which extends over its entire under surface at 29 and upwards at 28 around the side edges at least at the forepart and which is connected, at about the level of the top face of the unit, to a welt strip 32 secured to the lower edge of the upper. The flexible sheet material which covers the side edges of the unit may be integral with, or as shown, attached to that which covers the under surface. The upper may have a lining 12 which is stitched before lasting for a part or the whole of its periphery, to an insole member 18 to form a pocket or pockets for end stiffeners 20 kept in place by the platform unit. The attachment of the strip 32 to the material 28 may be by lacing passed through holes 34, 36 in the strip 32 and material 28 respectively. The upper may be open at the toe in which case the material 28 at that part may be secured to the sock lining. In a modification, the upper lining may be omitted and a counter stiffener is inserted in the open lower end of a pocket formed by stitching a wide strap portion to the outside of the upper at the top and sides.
Patent GB-331309-A (GB)
Title: Improvements in or relating to non-refillable bottles and the like
IPC: B65D49/08
Filed: 1929-04-25
Abstract: 331,309. Maeder, A. April 25, 1929. Bottles, non-refillable.- A non-refillable bottle is formed with a tapered neck 2 in which a glass stopper 3 of corresponding shape is held by a spring 4. The upper end of the spring bears against the underside of a perforated glass disc 5, and lower end is furnished with a ball to prevent it from entering between the stopper and the neck. A removable cork disc 7 is superposed upon the disc 5. Upon inverting the bottle for pouring, a glass ball 8 assists in unseating the stopper.
Patent GB-611371-A (GB)
Title: Improvements in or relating to bolster bearings for the spindles of spinning and like machines
IPC: F16C33/12
Filed: 1946-04-30
Abstract: 611,371. Bearings. LANGHORN, A. T. J., and BARNES, C. E. April 30, 1946, No. 12956. Drawings to Specification. [Class 12 (i)] Spinning spindles are mounted in lignum vitae bearings used dry. Several bearings may be formed in each of a number of lengths of lignum vitae which are secured with tongue and groove location to the bearing rail of the machine. Alternatively, each bearing may comprise a bush with a plate-like top extension for fixing to a standard machine rail.
Patent GB-201275-A (GB)
Title: Improved process for finishing fabrics, garments and the like
IPC: D06M11/55
Filed: 1922-05-09
Abstract: 201,275. Anderson, W. J. May 9, 1922. Liquids, treating with; processes, compound. -Textile fabrics, garments, &c. are treated after cleaning and, or, dyeing, and before pressing with an aqueous solution of common salt and a small quantity of pure sulphuric acid, the surplus liquid being expressed subsequently and the fabric being allowed to dry. The solution may be in the proportion of about 1 1/2 oz common salt and 5 c.c. pure concentrated sulphuric acid to one gallon of water. The treatment restores the original pile of the fabric.
Patent GB-391318-A (GB)
Title: Improvements in operating and indicating mechanism for variable electric condensers and other instruments for wireless and similar purposes
IPC: H03J1/12
Filed: 1932-05-06
Abstract: 391,318. Adjusting wireless sets. WILKINS & WRIGHT, Ltd. and HEWITT, J. H., Holyhead Road, Handsworth, Birmingham. May 6, 1932, No. 13071. [Class 37.] An indicator for variable condensers &c. comprises a spindle 16, driven for example by a slow-motion device, and a rotary member 35 on the spindle co-operating with one or both of a pair of substantially parallel levers 32, each pivoted at one end to a stationary part of the structure and connected at the other bv a link carrying a cursor 28 behind which an electric light 29 may be fixed. In Fig. 2 the rotary member 35 is shown as an eccentric disc with grooved edge in which the levers run. In Fig. 6 the levers are actuated from the rotary member by flexible bands 41. In a further modification a pinion is mounted on the spindle 16 working in a rack secured to the levers. If one lever only is actuated directly the return movement may be effected by a spring.
Patent GB-108385-A (GB)
Title: Casings or Holders for Table Cultlery, Forks, Spoon and the like.
Inventor: KNIGHT WILLIAM EDWIN
IPC: A47G21/14
Filed: 1916-09-15
Abstract: 108,385. Knight, W. E. Sept. 15, 1916. Cellular cases; cases formed of separate bodies combined side by side.-A casing or holder for table cutlery, forks, spoons, &c. is made of two or more elongated sheaths or covers of strong pliable material, such as leather, American cloth, &c. secured centrally together and constituting compartments for the knives &c., for disposal in the usual solid cutlery case. The Figure shows a holder comprising three small cases a and three large ones b stitched centrally at c to form in each case two compartments d. The open mouths of the compartments may be provided with a closure device and the inner surfaces may be of material that will polish the articles in the act of inserting or withdrawing them.