baber/WOPTO huggingface dataset:
Patent GB-1083568-A (GB)
Title: Method and circuit for automatic speed control of asynchronous motors supplied by static frequency converters
IPC: H02P27/04
Filed: 1966-03-21
Abstract: 1, 083, 568. Automatic control systems. MINISTERUL INDUSTRIEI CONSTRUCTIILOR DE MASINI ROUMANIA. March 21, 1966 [March 25, 1965 (2)], No.12338/66. Heading G3R. [Also in Division H2] An asynchronous motor 2 is supplied via a rectifier/inverter 8, the frequency of which is controlled in response to the difference between the motor current i and a reference value i* the value i* being derived from the difference between actual speed (from tachogenerator 3) and an adjustable reference 1. The r.m.s. voltage of the inverter is controlled to produce constant flux, by comparison of flux transducer 10 and fixed reference 9, at speeds below nominal, while at and above nominal speed the voltage is kept constant by comparison with a fixed maximum valve reference 13; a device 11 produces a control signal from whichever error (flux or voltage) is the lesser. Reversing is effected by change of phase sequence of the inverter and change of polarity of the current reference i*; it is effected by switch devices 15, 16 which operate when the actual speed drops below a threshold value following a reverse command set on speed reference 1. The inverter comprises two thyristor circuits per phase, each of which switch on and off several times per cycle; they are triggered on by high frequency pulses applied to gating circuits, the sequence rate (and hence output frequency) being determined by a ring counter whose rate is controlled by the current error signal. Fig. 2 (not shown). The thyristors are extinguished by LC circuits and commutating thyristors, triggered at a time determined by the voltage or flux error signals, so as to adjust the pulse lengths applied to the motor. Three inverter circuits are described; in Fig. 5 (not shown) each thyristor (T1 ... T6) has its own, single, commutating thyristor (T7.... T10), in Fig. 6 (not shown) commutating thyristors (T19.... T21) are common to all phases and in Fig. 7 (not shown) each thyristor is commutated by its own thyristor bridge network.
Patent GB-1065087-A (GB)
Title: Process for the preparation of thermoplastic processible elastic polyurethanes
IPC: C08G18/66
Filed: 1964-03-24
Abstract: A thermoplastic polyurethane is produced by reacting at 80-150 DEG C. a water-free mixture of a purely linear hydroxy terminated polymer or copolymer of a cyclic ether having a M.W. of at least 800, and an aliphatic or cyclo-aliphatic glycol having a M.W. below 500, the molar ratio of glycol to polyether being from 0.1:1 to 3.0:1, with an excess of a diisocyanate necessary to react with all the -OH groups. The cyclic ether may be an alkylene oxide, e.g. ethylene oxide, propylene oxide or epichlorhydrin, tetrahydrofuran, oxacyclo butane or a substituted derivative or mixture thereof.  The diisocyanate may be aliphatic or aromatic.
Patent GB-108558-A (GB)
Title: An Improved Mechanism for Spacing or Stepping Off Distances, especially adapted for use with Toys.
Inventor: HARVEY CHARLES JAMES
IPC: A63H7/00
Filed: 1916-09-01
Abstract: 108,558. Harvey, C. J. Sept. 1, 1916. Moving and changing apparatus. - A walking toy figure y is connected to a vertical spindle 21<a>, passing through a standard 22 and driven by a motor so that the figure walks round on a base 21. The spindle 21<a> carries a tablet 23 for advertisements. The legs of the figure are carried by a rocking frame mounted on a central spindle to which the propulsive power is applied, and move in circular arcs, thus producing a walking effect.
Patent GB-580313-A (GB)
Title: Improvements in tying machines for packages and the like
Filed: 1944-06-29
Abstract: 580,313. Tying packages. POWER & SONS, Ltd., F. A., PADMORE, J. N., PLATT BROS, & CO., Ltd., and BASSINDALE, I. B. June 29, 1944, No. 12411. [Class 45] A wire tying machine, having rotary means for training the wire around the package is provided with manually operated means for enabling an operator to complete and tie by setting in motion the mechanism which makes the tie, if this has not been done automatically owing to the said rotary means not completing its proper travel. The invention is described as applied to the wire tying machine described in Specification 523,786. A handle c projecting from the end casting a of the machine is connected by a rod b and a pair of links cl to a bar 127. A shoulder 140 on the bar 127 engages a pawl 139 on a shaft 133 which initiates the driving connection for the tyin g mechanism. A slot f in the bar 127 prevents a sharp impact of the handle c against the frame when the tie has been completed.
Patent GB-869792-A (GB)
Title: Improvements in or relating to boxes for use in the packaging of fragile articles
Inventor: WINSHIP SYDNEY
IPC: B65D5/50
Filed: 1958-04-19
Abstract: 869,792. Boxes for fragile articles. BOWATER-EBURITE FIBRE CONTAINERS Ltd. July 17, 1959 [April 19, I958], No. 12487/58. Class 18. A box for packing bottles comprises an outer container 1, a central apertured partition 2 and apertured end members 12, 13. The members 12, 13 hold the bottoms of the bottles and the partition 2 comprising sections 19-22 has apertures 3 engaging the bottle necks. The bottles are packed in two series of opposed, alternating rows with the necks of the two series overlapping. The box may have members 4, 10 folded as shown in Fig. 1 to support the members 2, 12, and 13. A member 8 covers the inside of the bottom of the box and is folded back at two edges to abut the members 12, 13. An inverted U-shaped member fits into the top of the box before closure flaps 17, 18 are folded down. In one modification, the member 8 may be extended to lie against the inside of each end wall and to form additional flaps lying beneath flaps 17 when the box is closed. In a second modification, two members 4 and one member 10 may be combined to form a single U-shaped member formed from one strip.
Patent GB-423657-A (GB)
Title: Improvements in internal combustion turbines
IPC: F02C5/12
Filed: 1933-04-29
Abstract: 423,657. Combustion turbines. FOULSTON, C., 18, Wollaston Road, Cleethorpes, Lincolnshire. April 29, 1933, No. 12554. [Class 110 (iii)] The turbine comprises a rotor b having teeth and recesses h on the periphery, inlet ports t<1>, slide valves f<1>, controlling the admission of burnt gas, and reciprocating-piston air compressors s which supply combustion chambers e, and which are fed by air from a supercharger s<5>. Jackets e<2> are provided for cooling air which passes through ports m and is driven outwards by blades n to set up counter-pressure to working-fluid in the labyrinthine packing k. Water may be used for cooling. One form of cooling system is shown in Fig. 1 where water enters the right-hand side of the hollow shaft c, passes over guides q and is discharged through funnels r. The gases exhausting fromthe rotor chamber may be led through a pipe t<6> to the inlet t<11> of a radial flow turbine t, and finally through guide passages t<3> to blades t<2> on the periphery of the supercharger rotor s<5>. A jet injects water on to heated vanes t<7> and the steam mixes with the combustion gases. These vanes are made from non-corrosive material. The pipe t<6> may lead directly to atmosphere. Each slide valve controlling an admission port t<1> is actuated through cam gear as shown in Fig. 6, or otherwise driven as by explosion pressure against a spring. The valve f<1> is supported on rollers and springs which press it into contact with the upper casing. In some cases the valve may be cut out after the turbine has started. An air inlet valve e<1> is provided for the combustion chamber. Water may be injected after gas admission to the rotor chamber. A fuel pump w is driven off the main shaft c through gearing y. Ignition is obtained by means of a sparking plug, or compression-ignition may be used. The teeth or recesses h may be arranged in groups around the rotor periphery. Inlets admit scavenging air to the working chamber, just before an exhaust port is reached. The impeller shaft c and a shaft u surrounding it and carrying the turbine wheel t and blades s<5> are connected with each other at the driving end v of the engine by gearing u<1>. Reversal of drive may thus be secured. Fig. 14 shows a modified form of combustion chamber and comprises a pair of floating heads v containing the combustion chamber e. The explosion forces back the heads against spring pressure, within a sleeve valve member v<1> having a port v<2> which communicates with the working chamber.
Patent GB-453614-A (GB)
Title: Improvements relating to grain sprouting apparatus
IPC: A01G31/06
Filed: 1935-04-27
Abstract: 453,614. Malting. ROBBINS, A. F., High Street, South Woodchester, near Stroud, Gloucestershire. April 27, 1935, No. 12624. [Class 14 (ii)] [See also Groups I and XI] Apparatus for sprouting grain consists of a plurality of box- or tray-like compartments e, f, g, with which are associated shallow containers e<1>, f<1>, g<1> for the reception of grain-sprouting trays e<2>, f<2>, g<2> and water, the compartments being disposed one above another vertically and heated from a central source comprising a heat generator, e.g. an oil-burning lamp a, a gas jet or an electric heater, a vertical conduit b extending vertically through the appliance for the upward flow of the hot gases, a concentric pipe c around the conduit b for the downward displacement of the hot gases and a flue or flues d beneath the floor or lower part of one or more of the compartments. The grain sprouting trays e<2>, f<2>, g<2> may be detachable and consist of perforated sheet metal plates supported on legs and stiffened by bounding and crossmembers. Each container may have a water outlet pipe e3, f<3>, g3 controlled by a tap &c. The compartments may be disposed in a box-like casing having detachable closure members and may include glass for the propagation of the seed, or the compartments may be box-like and separate and adapted to be assembled one upon another.
Patent GB-1076906-A (GB)
Title: Support standard
IPC: A47B57/42
Filed: 1966-03-22
Abstract: 1,076,906. Bracket supports. E. J. WRIGHTCENTRAL Ltd. March 22, 1966 [Dec. 10, 1965], No. 12659/66. Heading A4B. A standard for supporting shelf brackets (9) comprises two spaced parallel rods (4, 5) of square wave formation with their vertical portions (6, 7) received in vertical grooves (2) in two parallel vertical sheet metal members (1, 10), and with their horizontal portions 8 extending between the metal members (1, 10) and serving as bracket supporting cross-pieces. Some of the vertical portions 6, 7 are secured to the sheet metal members. Each standard may have a single rod of square wave formation.
Patent GB-1248253-A (GB)
Title: A method of forming metal alloys
Inventor: HUNDY BERNARD BRIAN
IPC: B21D26/055
Filed: 1968-03-21
Abstract: 1,248,253. Stamping; working at specified temperatures. PRESSED STEEL FISHER Ltd. 14 March,. 1969 [21 March, 1968], No. 13678/68. Headings B3Q and B3V. A superplastic metal alloy is heated after it has been hot formed to a temperature above the range at which it exhibits superplasticity before it is stripped from the forming tool. In one embodiment, Fig. 1, electrical heaters 18 are positioned to heat a eutectoid Zn-Al superplastic alloy blank 15 to and maintain it at 275‹ C., whereupon it is vacuum formed against the die 12. After forming, the temperature of the blank 15 is raised by the heaters 18 to 310‹ C. and the formed blank stripped from the die 12 by a blast of compressed air. In another embodiment (Fig. 2, not shown), the blank (33) is clamped between sealing rings (26, 29) and heated to 250‹ C. by electrical heaters (32) mounted in a pressure box (28) and heaters (25) embedded in a porous refractory die (24). The blank is formed against the die (24) by passing compressed air through the pressure box (28), after which it is heated to 310‹ C. and finally, stripped by pin ejectors (not shown).
Patent GB-1498711-A (GB)
Title: Tool gauging apparatus for machine tools
IPC: B23Q3/155
Filed: 1975-03-26
Abstract: 1498711 Gauging CINCINNATI MILACRON Inc 26 March 1975 [28 March 1974] 12714/75 Heading B3B [Also in Divisions G1 and G3] Tool gauging apparatus for supplying dimensional information on a plurality of tools to a control device of a machine tool comprises, a measuring apparatus 10, 11 having a socket 15 in which a tool 14 is held stationary and a manually operable gauging apparatus 18, 20, 22, for measuring a dimension of the tool 14 relative to a reference plane 16 and providing an electric signal representing the magnitude of the said dimension; a storage circuit means responsive to each of the said electric signals for storing same and generating corresponding output signals representing the measured dimension, and including a tool number setting device for producing tool number signals each uniquely identifying one of the cutting tools; and an interfacing circuit responsive to the output signals and the tool number signals for communicating these in association with each other to the machine tool control device. In one embodiment the control device comprises a computer 81 which holds its own storage means and can receive information in an "active storage circuit 100" on tools of a presently used machining programme, and also receives information in a "next job storage circuit 102" ready for a succeeding machining program. Alternatively, the machine tool may be controlled by a NC device having no information storage means of its own (Fig. 5, not shown), or by a NC device having its own information storage means (Fig. 6, not shown). Visual readout 70 is provided in a control circuit 60 along with a failure light 90 which operates when an information signal is rejected by the storage circuit 100 or 102. As described the measuring apparatus comprises, for the horizontal slide 22 movable in a vertical slide 20, a reading head 25 having a light source and a sensor to read an etched scale 21 to provide a digital electric signal. A similar device measures the movement of the vertical slide 20.
Patent GB-528629-A (GB)
Title: Improvements in and relating to electric fuses
IPC: H01H85/30
Filed: 1939-04-28
Abstract: 528,629. Fusible cut-outs. BRITISH THOMSON-HOUSTON CO., Ltd. April 28, 1939, No. 12767. Convention date, April 29, 1938. [Class 38 (i)] The blowing of the fuse causes gas to be developed in a gas-tight chamber exterior to the cartridge, the pressure of the gas causing the flexure of a diaphragm into an indicating position. In one form the fusing of the fuse wires 10 encased in beads 16 of ceramic material results in arcing taking place at the end of a wire 32 in parallel with the fuse but having its end isolated by tissue paper 33 from a plate 25 that seals the end of the fuse chamber. A gas-producing material such as smokeless powder in a chamber 31 thereupon burns and the pressure set up forces a flexible diaphragm 26 into the position shown dotted, disc 39 being ejected to reveal a legend such as "Blown" painted on the diaphragm. In a modification, the fuse wire itself passes through the powder, so as to ignite it on overload. The outer surface of the diaphragm is coated with a brittle enamel which is shattered on flexure of the diaphragm, the indicating legend on the diaphragm being applied in flexible paint.
Patent GB-504973-A (GB)
Title: Improvements in or relating to extension ladders, steps, trestles and the like
IPC: D06M13/148
Filed: 1938-04-28
Abstract: 504,973. Extension ladders &c. LUCK, F., and MORRIS, C. V. April 29, 1938, No. 12809. [Class 20 (ii)] An extension ladder, trestle, or the like, of the kind in which the sliding member 3 is provided with abutments 5 which are adapted to coact with the rungs 2 of the fixed member 1 to support the sliding member in extended position, has automatic means for pressing the abutments out of the path of the rungs during relative movement of the members. The means comprises channel-shaped 'brackets 8 with rollers 9 carried by a cross shaft 7a on the sliding ladder section, the rollers being urged ,by spring means or otherwise to press against the front portions of the sides of the fixed ladder member. As shown, the hauling rope 13 passes around a spring hook 15 connected by a link 11 to the bracket 8 so that as the rope is pulled the rollers in the brackets are pressed forwards and the sliding ladder section is pressed away from the fixed section. Wedge-shaped blocks 16 are fixed to the rear of the abutments 5 to assist the inclining movement of the sliding ladder section, and extensions 5a on the abutments limit the inclining movement.
Patent GB-1418772-A (GB)
Title: Mixing of fluids
IPC: B01F5/06
Filed: 1973-03-16
Abstract: 1418772 Mixing apparatus; spray-producers RANSBURG CORP 16 March 1973 [16 March 1972] 12853/73 Headings B1C and B2F A fluid mixing device comprises support means defining an elongate chamber, a member inserted in said chamber to leave a mixing space at the forward end, said member defining a first fluid passage with means for causing fluid from said first passage to enter the mixing space as a plurality of streams, said member further defining a second fluid passage with means for causing fluid from said second passage also to enter the mixing space as a plurality of streams, and means within the mixing space between the member and an outlet for producing turbulence to further mix the fluids. First fluid supplied from a conduit 41 passes down a central passage 55 in a diffuser element 50 and emerges through holes 57 into a mixing chamber 32 as a plurality of separate streams, while a second fluid supplied from a conduit 43 passes via an annular distributing chamber 59 and channels 61 in the outer surface of the diffuser element to the chamber 32 the second fluid thus also emerging as a plurality of streams, to mix with the streams of first fluid. A baffle element 63 comprising spaced discs 65 each with peripheral cutout portions 66 is located in the chamber 32 to promote turbulence and further mixing of the fluids which then pass to a spraying tip 70. The latter has a bore 71 with a generally hemispherical end and a V-shaped notch 72 which breaks into the bore to provide a sharp-edged oval orifice 73. The mixing and spraying device may be used spraying resinous materials (e.g. polyester, epoxy or urethane resins) or silicone rubber with catalysts, promoters or curing agents. The second fluid may comprise a mixture of air under pressure (as a carrier) with the catalyst component.
Patent GB-366819-A (GB)
Title: Improvements in drawing heads, in particular for bast fibre spinning machines
IPC: D01H5/74
Filed: 1931-05-01
Abstract: 366,819. Drawing heads for spinning- machines. SIEMENS - SCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. May 1, 1931, No. 12957. Convention date, May 7, 1930. [Class 120 (ii).] In a drawing mechanism for bast fibre spinning machines comprising drawing rollers 2 and coacting delivery rollers 3, the driving shaft 4 of the latter is journalled in a ring-oiled bearing consisting of open bearings 6, 7 and a ring 8 disposed therebetween and dipping into an oil vessel 9.
Patent GB-582816-A (GB)
Title: Improved defiberizing machines for preparing fibrous mouldable compositions
IPC: D01G11/02
Filed: 1944-07-06
Abstract: Moulding compositions for compression into blocks which may be used for brake linings, artificial leather or construction materials, are prepared by coating fibres, preferably low grade or waste fibres such as cotton motes, lint, flock, scraps of yarn or cloth, or the like, with a bonding-medium, e.g., rubber, drying oil, thermosetting resin, varnish, or the like, drying, compressing the coated fibres into a compact solid mass, disintegrating the mass into discrete shreds without substantial cutting or shortening of the fibres, and finely compressing into the desired form.  The disintegration of the block is carried out in a machine having a rotatable and transversely movable element preferably in the form of a wire brush against which the block is pressed and fed (see Group II).
Patent GB-1186884-A (GB)
Title: Manufacture of Pyridine and Alkyl Pyridines
Inventor: CORRAN JOHN ANTHONY
IPC: C07D213/14
Filed: 1967-03-20
Abstract: 1,186,884. Pyridines. IMPERIAL CHEMICAL INDUSTRIES Ltd. 22 Feb., 1968 [20 March, 1967 (2)], Nos. 12988/67 and 12989/67. Heading C2C. Pyridine or an alkyl pyridine is obtained by interacting a 4-alkyl-1,3-dioxan, 4-hydroxytetrahydropyran or an alkyl-substituted derivative thereof with ammonia in the vapour phase at elevated temperature in the presence of molecular oxygen. The reaction is preferably carried out in the presence of a catalyst comprising silica, alumina or silica-alumina, with or without metals, oxides or salts.
Patent GB-359945-A (GB)
Title: Improvements in and apparatus for the conversion by heat-treatment of coals, tars, mineral oils and the like
IPC: C10G1/06
Filed: 1930-04-28
Abstract: <PICT:0359945/III/1> In preheating distillable carbonaceous materials, if desired with the addition of hydrogen, by passage through a tube over the outside of which a heating fluid flows in the same direction, means are provided to reduce the heat transfer along the length of the tube to a greater extent than it would be reduced in the absence of the said means.  This may be effected by reducing the supply or temperature of the heating medium, by increasing the velocity of the materials to be heated or by reducing that of the medium, or by reducing the heat conductivity of the walls of the tube.  Preferably the temperature of the carbonaceous material as it approaches closely to the reaction temperature is not more than 20 DEG  C. below that of the tube wall.  Material flowing through a tube d is heated by combustion gases flowing from a combustion chamber b towards an exit e.  Near the inlet h the tube is provided with closely-spaced fins to assist heat transfer; in the lower part the fins are less closely spaced, and at the bottom near the exit i, there are no fins at all.
Patent GB-310543-A (GB)
Title: Improvements in or relating to change speed and clutch operating mechanism for motorvehicles
Filed: 1929-04-26
Abstract: 310,543. Brunet, G. April 28, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Addition to 301,315. Controlling.-De-clutching is effected by means of a servo-motor or power device controlled by a handle provided on the gear lever, so that when this lever is grasped preparatory to changing gear the clutch is disengaged. The power device may be driven from the vehicle driving gear or may be an electric, hydraulic or pneumatic motor. In the construction shown a cylinder a, having a piston b connected by a cable d with the usual clutch pedal c, is adapted to be connected by a three-way valve i either with the atmosphere or with a pipe g leading to the engine induction pipe. The valve i is controlled through a Bowden wire k by a handle m carried by the gear lever o. When the handle is operated the valve i is turned to connect the cylinder to the induction pipe, the piston b is raised and the clutch is disengaged. Double de-clutching in "changing down" may be effected without releasing the handle m, by temporarily depressing the accelerator pedal when the gear lever is in the neutral position; this breaks the vacuum and lets the clutch in again to increase the engine and gear-shaft speed.