baber/WOPTO huggingface dataset:
Patent GB-613759-A (GB)
Title: Improvements in or relating to chairs and the like
IPC: A47C5/04
Filed: 1946-07-01
Abstract: 613,759. Seats and frames therefor. MORRIS. C. V. July 1, 1946. No. 19643. [Class 52 (ii)] A seat member A of metal or plastic material formed as a pressing or otherwise is secured to the upper ends of flat side members B, C serving as legs while a flat plate back member G is secured between the side members B, C. Cross members D, E, F are provided between the side members B, C and are connected thereto by interengaging slots. The back member G likewise engages the side member B, C by means of interengaging slots.
Patent GB-1113260-A (GB)
Title: Improvements in electronic choppers
IPC: H02M7/537
Filed: 1967-04-28
Abstract: 1,113,260. Transistor switching circuits; amplitude modulation. VOORHEEN P. J. KIPP & ZONEN N.V. 28 April, 1967 [13 July, 1966], No. 19698/67. Headings H3R and H3T. A chopper circuit comprises a field effect transistor 4 having equal first and second transformer windings 5, 6 in series with its source and drain electrodes respectively and connected across the D.C. input voltage 1, 2, a pulse generator 7 for rendering transistor 4 alternately conductive and non-conductive, an output transformer winding 8 coupled to windings 5, 6 and a capacitor 12 connected between the ends of windings 5, 6 remote from transistor 4. Winding 8 is tuned to the repetition frequency by a capacitor 11. Transistor 4 is symmetrical so that any interference signals resulting from undesired coupling between the gate electrode and the other two electrodes through internal capacities or leakage currents flow equally in opposite directions through windings 5, 6 and cancel by being short-circuited through capacitor 12. Transistor 4 may be replaced by two asymmetric field effect transistors connected to operate as a symmetric one, i.e. connected in parallel with the source of each connected to the drain of the other and the gates connected together. Generator 7 may be connected between the gate of transistor 4 and the midpoint of a potential divider connected across D.C. input 1, 2 (Fig. 2, not shown), the impedances of which divider may be two capacitors replacing capacitor 12. A second path comprising a further field effect transistor and two windings also coupled to winding 8 may be connected in parallel with the first path 4, 5, 6, the transistors being operated by generator 7 in push-pull (Fig. 4, not shown).
Patent GB-731615-A (GB)
Title: Improvements in and relating to thermosetting urea-formaldehyde moulding compositions
Inventor: WHITE ALAN
IPC: C08K5/06
Filed: 1952-08-05
Abstract: A thermosetting moulding composition comprises a urea-formaldehyde condensate, a glyceryl diaryl ether and from 0 to 4 per cent by weight of the composition of a mould lubricant, such as stearic palmitic, oleic or ricinoleic acid or a metal salt thereof.  The diaryl ether, which may contain phenyl, benzyl or preferably cresyl radicals, may be used in amount of 0.25 to 5 per cent by weight of the composition and may be added (1) to the urea and formalin prior to condensation; (2) to the resin syrup prior to mixing with a filler; or (3) together with stabilizer, accelerator, &c. to the dried resin-syrup-filler mixture.  In example (1) the composition is made by mixing a resin syrup, obtained by reacting urea and formalin at an alkaline pH, with glyceryl dicresyl ether and a -cellulose, drying the mixture, mixing the dried product with pigment, trimethyl phosphate (accelerator) and zinc stearate, grinding and densifying the resulting mixture; (2) the composition is similarly made except that wood flour is used as the filler and hexamethylene tetramine is added as stabilizer.  The compositions may be used for making, e.g. kitchen utensils, buttons and brush backs.
Patent GB-756258-A (GB)
Title: Improvements in or relating to rotary-drum drying apparatus
IPC: F26B11/02
Filed: 1954-07-06
Abstract: 756,258. Rotary drying apparatus. WEISS, E. W. [trading as WEISS-TROCKNUNGSANLAGEN, EMIL W. WEISS]. July 6, 1954 [July 7, 1953], No. 19814/54. Class 34(2). A rotary drying apparatus has a rotary inner casing a, of fire-proof material from b to c and forming a combustion chamber for oil from a burner l on a fixed support m, the part c to d being surrounded by a casing e and forming with the combustion chamber a heating chamber H. The material to be dried, fed through a shoot v passes through a helically extending chamber T formed by helix i between the chamber H and an outer rotary casing h closed at one end by a cover t and opening at the other into a discharge housing w from which the dried material is pneumatically conveyed by a fan x to a cyclone z having its outlet opening on to a vibrating sieve through which the finer material falls into a bagging silo, the coarser material being returned to housing w. Hot gases from chamber H are mixed with air entering between walls a, e and openings f and the mixture flows, owing to suction from fan x, through passages g  into the helical chamber T.
Patent GB-1042319-A (GB)
Title: Recording and/or reproducing apparatus
Inventor: HERBERT JOHN RICHARD
IPC: G11B5/58
Filed: 1962-12-01
Abstract: 1,042,319. Recording and playback apparatus. INTERNATIONAL BUSINESS MACHINES CORPORATION. Aug. 6, 1963 [Dec. 1, 1962], No. 19914/66. Divided out of 1,042,318. Heading G5R. The description is substantially the same as that in Specification 1,042,318, but the claims relate to the provision of a plurality of head assemblies 12 guided by respective followers 10 which move in one or more spiral grooves 9.
Patent GB-596770-A (GB)
Title: Improvements in or relating to carding engines
IPC: D01G15/36
Filed: 1945-08-03
Abstract: 596,770. Carding-engines. VARGA, A. Aug. 3, 1945, No. 19961. [Class 120 (i)] According to the invention, 'the rollers of a carding-engine are provided with driving arrangements permitting their relative speeds to be varied while the engine is' running. Drive to the workers from the swift shaft is through a belt 1, gear wheels 6, and cone pulleys 8, 9 to the shaft 13 of the last worker. For a reverse motion the gear wheels 6 may be disengaged and a gear wheel 15 interposed. According- to the Provisional Specification, a crossed belt and clutch may be used for the reverse motion. The doffer drive is taken through the gear wheels 6, cone pulleys 8b, 9b to the doffer shaft 13b. Similar drives may be arranged on the other side of the engine for the strippers and fancy. The fancy may be adjustably mounted so that manipulation of a hand wheel 28 will move the fancy wires farther into or out of the swift wires.
Patent GB-205235-A (GB)
Title: Single sash window holder suitable for railway carriage windows and the like
IPC: B61D25/00
Filed: 1922-07-22
Abstract: 205,235. Jones, M. July 22, 1922. Sliding bolts.-A spring plunger for maintaining a railway carriage window in closed position has a handle protruding from the casing and shaped so that when pressed towards a fixed projection on the sash by the finger and thumb the window can be readily adjusted. The plunger C mounted in a casing A engages a strip of brass H on the frame under the pressure of the spring B the compression of which is adjusted by the plug D. A handle E is screwed into the plunger and has a projection at right angles to it which can be pressed towards the fixed lifting bracket I. A locking nut D<1> is carried by the plug D. When the window is in the closed position, the plunger enters a notch J in the strip H. The window is held in partially open positions by the pressure of the plunger on the brass strip. The device may be secured to the side of the sash as shown in the Figure, or to the top.
Patent GB-1131270-A (GB)
Title: Electromagnetic record head and system
Inventor: JOHNSON KEITH DE OSMA
IPC: G11B5/00
Filed: 1967-05-02
Abstract: 1,131,270. Magnetic heads. GAUSS ELECTROPHYSICS Inc. 2 May, 1967, No. 20228/67. Heading G5R. [Also in Division H3] In a magnetic head, an electrically conductive non-magnetic material fills the gap, and the windings are energized from an oscillator operating in the megacycle range, e.g. 4 megacycles. As shown, the electrically-conductive material is a strip-like member 20, Fig. 1, e.g. of highly conductive copper or silver alloy. Preferably the strip 20 extends beyond the periphery of the gap 12 in all directions except towards the magnetic tape 14. In the circuit. Fig. 5, the signal input is introduced to a recording amplifier 50 which is coupled through a bias signal trap 52 to a recording head 10. A degenerative series negative feedback to the amplifier 50 is derived across an earthed resistor 54. Preferably circuitry is included for emphasizing the amplitude, during recording, of the higher amplitude signals, so as to compensate for saturation effects in the magnetic tape or other medium. Preferably such circuitry comprises two semi-conductor diodes which are reversely connected in parallel with one another and, together with a series resistor, are connected between the feedback path and earth in shunt with resistor 54. Preferably the amplifier 50 includes a constant current stage, consisting of two transistors and two diodes, to eliminate crossover distortion from the class B output stage of the amplifier.
Patent GB-1344528-A (GB)
Title: Electric motor door transmissions
IPC: E05D15/40
Filed: 1971-04-19
Abstract: 1344528 Up-and-over door operating mechanism E DORING 19 April 1971 [22 Jan 1970] 20246/71 Heading E2M [Also in Division F2] An up-and-over door 1 is operated by a reversible electric motor 17 which, through reduction gearing drives a crank the pin 31 of which acts on a pivoting lever 4 (or a member 7 rigidly connected thereto) to pivot this lever and so open (or close) the door 1 via lifting linkage and guide linkage, limit switches stopping and reversing the motor 17 after the door is opened (or closed), the crank being pivoted back for an amount equal to at least the preceding pivoting motion. This reverse motion of the crank brings the crank to a position in which it is ready to act upon the member 7 (and so the lever 4) to close (or open) the door. The lever 4 is pivoted on a shaft 5 and is connected at one end to the lower part of the door and at the other end has a counterbalancing spring 16. A bar 13 is pivotally connected to the lever 4 at one end and has a roller 14 sliding in a rail 15 of the door at the. other, an arm 12 being pivotally connected to both the bar 13 and the wall 10 adjacent the door. A similar arrangement is provided at the opposite side of the door to even the load thereon. The limit switches for the motor control may comprise two operated by the crank and two by the member 7, they may be actuated by a spindle nut on a spindle shaft driven by the motor, or they may be operated by a disc on the outport shaft having cams or pins. The electric circuit for controlling the operation is also described.
Patent GB-154290-A (GB)
Title: Improvements in dynamo electric machinery
IPC: H02K9/18
Filed: 1919-08-18
Abstract: 154,290. Lo-Thermo Patents, Ltd., and Burleigh, J. W. Aug. 18, 1919. Concentric or jacketed straighttube apparatus.-The heat-exchanging surfaces of a cooler for a dynamo-electric machine are formed of a series of inner and outer tubes so arranged that the casing air traverses the annular spaces between the tubes and the cooling air passes through the inner tubes and round the outer tubes or vice versa. The ends of the inner tubes F are fitted in recesses g<1> in the end plates G, G<1> and the ends of the outer tubes in recesses e<1> in the bed plates E, E'. The paths of the casing air and of the cooling air are shown by full line and broken line arrows respectively. Instead of the cooling air passing first through the inner tubes and then round the outer tubes, it may pass in parallel through the inner tubes and round the outer tubes. The tubes may be circular or rectangular in cross section, and several inner tubes may be placed in one outer tube. Specification 128,330, [Class 35, Dynamo-electric generators &c.], is referred to.
Patent GB-836150-A (GB)
Title: New 3-amino-6-substituted pyridazines and preparation of sulfanilamidopyridazines therefrom
IPC: C07D237/22
Filed: 1957-06-27
Abstract: The invention comprises 3-aminopyridazine derivatives of the formula <FORM:0836150/IV (b)/1> wherein R is an alkyl, aryl or aralkyl radical, and their preparation by reacting a 3-amino-6halo-pyridazine with the reaction product of an alkali metal, e.g. sodium, and an alcohol of the formula ROH, the reaction being preferably carried out either in an excess of the alcohol ROH or in an inert organic solvent, at a temperature of 50-200 DEG  C.  The invention also comprises a process for the preparation of sulphanilamido pyridazines of the formula <FORM:0836150/IV (b)/2> by reacting p-acetylsulphanilyl halide with a compound of the formula I in an organic solvent which is preferably a tertiary amine at a preferred temperature between 20 DEG  and 100 DEG  C., and deacetylating the resulting acetyl compound, for example, by hydrolysis with a strong base.  Examples describe the preparation of 6-methoxy-, 6-n-hexyloxy-, 6-phenoxyand 6 - benzyloxy - 3 - amino - pyridazine and their conversion to the corresponding p-acetylsulphanilyl- and sulphanilyl-derivatives.  Specification 776,730 is referred to.
Patent GB-394820-A (GB)
Title: Improvements in and relating to means for drafting fibres in spinning frames
IPC: D01H1/22
Filed: 1932-07-18
Abstract: 394,820. Drawing-apparatus for spinning-machines. MORTON, C., 32, Garden Street, Pawtucket, Rhode Island, U.S.A. July 18, 1932, No. 20348. [Class 120 (ii).] Means for drafting fibres in spinning - frames comprise a group of rollers including upper and lower front and back rolls 13, 14 and 15, 16 and upper and lower intermediate carrier rolls 17, 18, with the surfaces of the rollers set to run close together but just clear of each other, and transmission gearing at one side of the frame including a rotatable member 36 at the rear of the drafting group said member being geared to the front draft rolls and independently geared to the back and intermediate rolls. The front roll 13 drives through a pinion 35 a wheel 37 mounted on the same shaft 39 as a pinion 38 which drives the shaft 36 through a wheel 40. The shaft 36 is mounted in bearings 41, 42 and carries gear wheels 43, 44 which drive the intermediate and back lower rolls by gears 45, 46 and 49, 50 respectively. The shaft 36 may comprise the lower roller of a pair of auxiliary back rollers. The front and back lower rollers 13, 15 are ribbed, and the intermediate lower roller is smooth to permit the use of a heavy intermediate upper roller. The gear 46 is mounted on a lever 47 pivoted at 48 so that it may be swung upwardly to disengage the drive to the intermediate set of rollers.
Patent GB-400900-A (GB)
Title: Improvements in or relating to beacons
IPC: B64F1/20
Filed: 1932-10-31
Abstract: 400,900. Signal beacons for aerial and maritime navigation. SVENSKA AKTIEBOLAGET GASACCUMULATOR, Liding÷, near Stockholm. Oct. 31, 1932, No. 20417/33. Convention date, Dec. 24, 1931. Divided on 401,104. [Class 75 (iv).] In an aerial or maritime signal beacon for transmitting radio or light beams which are continuously variable in varying directions and for pointing out predetermined directions, two or more devices transmitting the signals oscillate within angles which contain the predetermined directions, the oscillatory movements of the device not continuously coinciding. For transmitting light beams the devices may comprise lens or reflector systems. Fig. 1 shows the vector curves z<1>, z<2> of two oscillating devices with a light efficiency curve e, the predetermined direction coinciding with either of the boundaries i, i, i<1>, i<1> of the revolving angle. The angle of oscillation may be greater than 180‹. Fig. 3 shows an involute or other cam disc 47 fixed on a driving shaft 46 and oscillating an arm 49 fixed on the shaft 48 of a lens system 1, 2. For transmitting radio beams the devices may comprise parabolic short wave reflectors, rotating directional aerials or loop antennµ, or fixed loop aerials with variometer couplings interconnected between the aerial systems and the radio frequency generators.
Patent GB-737345-A (GB)
Title: Improvements relating to reel winding machines
IPC: B65H19/30
Filed: 1953-07-23
Abstract: 737,345. Winding webs. JAGENBERGWERKE AKT.-GES. July 23, 1953 [July 24, 1952], No. 20452/53. Class 100 (1). A reel bar 9 is withdrawn from the fibre core 19 on which a web roll 1 has been wound by means of a support 10 carried by an arm 11. The arm 11 is fixed on a shaft 12 axially slidable in a hollow shaft 13, the outer end of the shaft 12 carrying a bearing 22 supported on castors 21. An arm 17, carried by the shaft 12, supports the withdrawn end of the reel bar 9. The shaft 12 is then rotated, after withdrawal of the reel bar, by gears 14 and 15 into a position, such that the reel bar 9 is inserted into a fresh core 19 supported by arms 20 which then convey the core 19 and reel bar 9 into winding position between winding drums 2 and 3. A lowering device 7 can be swung about an axis 6 to lower wound rolls from a support 5 to floor level after they have been removed from the drums 2, 3 by an ejecting device 4.
Patent GB-940027-A (GB)
Title: Improvements relating to electrical commutators
IPC: H02K13/00
Filed: 1960-06-10
Abstract: 940,027. Rotary distributers. BOFORS A.B. June 10, 1960 [July 1, 1959], No. 20494/60. Heading H2B. A commutator of the type in which at least four segments forming a cylindrical contact surface are each connected to an associated slip ring coaxial with the said surface has each segment formed as an integral extension of the associated slip ring. The four slip rings 5 having integral segments 6 (Fig. 1) are made of platinum-plated brass and assembled as shown in Fig. 2, being secured together by epoxy resin 7 cast therebetween. Brushes 11 and 14 are thus connected in turn, as the commutator revolves, to brushes 9, 10, 13 and 12.
Patent GB-124168-A (GB)
Title: Hook Link Fastener for Eyeletted Wearing Apparel.
Inventor: ROSS HERBERT ERNEST
IPC: A43C1/02
Filed: 1918-12-11
Abstract: 124,168. Ross, H. E. Dec. 11, 1918 Hooks.-A hook for eyeleted material comprises a member 10, Fig. 3, having at one end laterally disposed hooks 11 adapted to be engaged with the eyelets 13 by doubling up the material, and at the other end inwardly turned hooks 12 for the easy engagement with the eyelets on the other side of the opening. In the form shown in Fig. 5, where additional arms 16 are provided on the member 10, the laterally-disposed hook 18 on the arm 16 is turned outwards. The link member 10 may be cross-shaped as shown, or of H-shape.
Patent GB-269779-A (GB)
Title: Improvements in the recovery of vanadium from solutions
IPC: C22B34/22
Filed: 1926-08-23
Abstract: 269,779. Stevens, R. H., Norris, G. C., and Watson, W. N. Aug. 23, 1926. Drawings to Specification. Ferric vanadate; zinc vanadate; vanadates; zinc sulphate.-Vanadium is precipitated from. solutions containing free vanadic acid by neutralisation, preferably at about 50‹ C., with a, base such as zinc oxide, lime, or limestone in presence of a ferric compound; enough of the latter may be present to effect the precipitation of all the vanadium as ferric vanadate, or a part only may be so precipitated, the remainder being zinc vanadate, if zinc is present or is used as the base. The invention is particularly adapted for the treatment of zinc-vanadium ores; the .latter may be leached with spent electrolyte as usual, but ferrous sulphate be added to reduce the vanadium to the tetravalent state to prevent its precipitation with the impurities which are removed bv the addition of a base in the next step of the process. Phosphorus, if present, may be removed in the manner described in Specification 269,778. Before being precipitated, the vanadium is reconverted to the pentavalent state, as by adding an acid and manganese dioxide, and a ferrous compound may be added at this stage to yield the ferric compound required for the subsequent precipitation. Finally a base is added in a tank fitted with agita.ting- apparatus, the ferric compound being added if not already present, and the precipitate . is filtered. The filtrate, containing the zinc is further purified, if necessary, prior to electrolysis, whilst the vanadium precipitate is washed to remove sulphates either with water, a, solution containing sodium chloride, or dilute acid, in a series of tanks fitted with agitating-apparatus. The product may be used in the production of ferro-vanadium or of vanadium oxide,. A flow sheet for the process is included in the Specification. Specification 269,780 also is referred to.
Patent GB-594663-A (GB)
Title: Improved apparatus for raising natural oils and other liquids by gaseous pressure
IPC: F02M37/04
Filed: 1944-10-26
Abstract: 594,663. Raising liquids by gas pressure. BROWN, N. F., and INDOBURMA PETROLEUM CO., Ltd. Oct. 26, 1944, No. 20824. [Class 102 (ii)] In an arrangement for raising oil from wells by gas under pressure, the chamber b at the bottom of the well, in which the oil is collected through the opening c, is connected by ports d<1> to an upper auxiliary chamber e that is connected by ports f to the well. When the oil flows into the chamber b, the gases tend to separate from it and escape through the ports f and the position of the chamber is such that the head x<1> of the oil within equals the head y<1> of the oil without to ensure that the chamber b is completely filled. Specifications 493,283 and 584,410 are referred to.
Patent GB-717220-A (GB)
Title: Improvements in or relating to the separation of flour and bran
IPC: B07B1/20
Filed: 1952-08-20
Abstract: 717,220. Sifting apparatus. MIAG MUEHLENBAU UND INDUSTRIE GES. Aug. 20, 1952 [Aug. 24,1951],No. 20851/52. Class 117 For the separation of flour and bran, the material, introduced through entry p, is conveyed by the helical ribs t op the hollow member q, which rotates with the vertical shaft m, to the periphery of beaters L on the same shaft. The beaters convey the bran upwardly to another hollow rotating conveyer member r, carrying ribs t and thence to an outlet beater wand outlet duct e while the flour passes radially through the cylindrical sieve b surrounding the beaters l. The sieve b forms part of a casing u, having apertures v at the bottom, below helical blades s in the interior of member q through which air is drawn by the beaters l along their axis. Flour passing through the sieve with the air current reaches the interior of the outer casing a and falls to the lower outlet h.