baber/WOPTO huggingface dataset:
Patent GB-821141-A (GB)
Title: Improvements in or relating to inductive load supply circuits
IPC: H03F9/04
Filed: 1956-05-14
Abstract: 821,141. Magnetic amplifiers. SIEMENS SCHUCKERTWERKE A.G. May 14, 1956 No. 15012/56. Class 40 (9). A magnetic amplifier is provided with auxiliary alternating current magnetization in order to smooth irrgularities in the output characteristic which result from connection to an inductive load. Load windings 9-14 in the three-phase amplifier, Fig. 1, are controlled by windings 15-20 and auxiliary A.C. magnetization is provided by a delta connection of windings 21-26. The level of auxiliary magnetization is determined by series resistors 27- 29. In a modification, Fig. 2, the auxiliary magnetization is produced by A.C. in the load windings resulting from their interconnection by chokes 30-32. A series arrangement of a resistance and a condenser or a rectifier may be connected in parallel with the load to improve further the characteristic. The time constant of the control circuit should be less than the duration of ten cycles of A.C. and advantageously less than three. The auxiliary A.C. magnetization may be made to vary with the load and the control arrangement may find particular application in the control of eye magnets for medical purposes.
Patent GB-1206565-A (GB)
Title: Float switch
Inventor: LUGIMBUHL ROLF
IPC: G01F23/36
Filed: 1969-03-21
Abstract: 1,206,565. Liquid level indication. BESTA A.G. March 21, 1969, No.15021/69. Heading G1H. In a float switch for monitoring a liquid level, such as for use in a corrosive atmosphere or outside rooms liable to danger from explosions, a float 1, arranged in the interior of a container, moves with the alteration of the liquid level to tilt a permanent magnet 5 which, through the wall 23 of non-magnetizable material, tilts a permanent magnet 18 to actuate a rocking piece 17 and a tooth 19 thereon to move the actuator arm 20 to operate a magnetically controllable magneto-resistive element switch 15 provided with terminals 21. The elements of switch 15 are magnetically controllable semi-conductor resistances, such as indium antimonide, the resistance of which increases in a magnetic field.
Patent GB-1385942-A (GB)
Title: Loudspeaker assemblies
IPC: H04R1/22
Filed: 1972-03-30
Abstract: 1385942 Loudspeaker STANDARD TELEPHONES & CABLES Ltd 30 March 1972 15077/72 Headings H4J and H4X A loudspeaker assembly comprises three full range baffle-mounted loudspeakers located with their centres of radiation at the corners of a triangle and mounted to be inclined relative to one another so that the front radiation axes of the respective loudspeakers converge. The triangle may be equilateral. "Full range" loudspeakers reproduce frequencies from at lesat 1,000 Hz. to 10,000 Hz.  As described, a chipboard cabinet (Fig. 1) has baffle faces 7, 9 at an angle 11 of about 130 degrees and baffle faces 8, 10 at an angle 12 of about 124 degrees. Full range loudspeakers of miameter 5 inches are located at apertures 13, 14, 15, 16. The loudspeakers may be in a common chamber in the cabinet or in separate chambers. Absorbent bonded acetate fibre is in the or each chamber. If desired, a "tweeter" (not shown) may be centrally located. The cabinet is preferably sealed, apart from a breather hole. Alternatively it may be open backed. In use the assembly may be horizontal (as shown), vertical or at an angle. Two such assemblies may be used in sterophonic reproduction. Other cabinet constructions have a smoothly concave baffle face and may be part-spherical. Cabinet and/or baffle may be of plastics material such as cellular polypropylene. The front may be covered with flat mesh giving the cabinet a flat front appearance.
Patent GB-1375785-A (GB)
IPC: G01N27/333
Filed: 1972-03-30
Abstract: 1375785 Electro-chemical analysis H FREISER H J JAMES G D CARMACK B M KNEEBONE and R W CATTRALL 30 March 1972 [19 Jan 1972] 15128/72 Heading G1N A "solid state" ion selective electrode comprises a conducting wire coated with a molecular dispersion of an ionic material in an insulating polymer. This may be a solution or colloidal dispersion in the polymer. The ion exchange material may be an ion exchange resin and may contain any measurable ion or group of ions. Extensive lists are given of ionic materials and polymeric materials, and plasticizers. CONSTRUCTION. Fourteen examples are given of electrodes and responses. Typically the electrode might consist of a Pt. wire dipped in a solution of P.V.C. in cyclohexanone, and when the resulting film is nearly dry it is dipped in a solution of the ionic material, or the P.V.C./ cyclohexanone solution may be mixed with a solution of the ionic complex in decanol. Alternatively the Pt. wire may be coated with polystyrene from a chloroform solution and when dry soaked in chlorosulphonic acid for five minutes and after washing in a solution of the cation of interest e.g. CuSO 4  for copper.
Patent GB-889962-A (GB)
Title: Improvements in or relating to steam generators
IPC: G21D1/02
Filed: 1959-05-04
Abstract: Hydrogen and oxygen in admixture with steam are combined in the presence of a palladinized alumina catalyst to form steam.  To avoid poisoning the catalyst the steam is previously superheated, e.g. by the heat released during the recombination.  The mixture may be diluted with air, which may also carry the heat needed for superheating.
Patent GB-354839-A (GB)
Title: Improvements in and relating to windows for road vehicles
IPC: B60J1/14
Filed: 1930-05-17
Abstract: 354,839. Vehicle windows. BIGGS, F., 57, Tavistock Crescent, Notting Hill, London, and LOWE, BEVAN, & CO., Ltd., Clarence Works, Scotland Street, Parade, Birmingham. May 17, 1930, No. 15200. [Class 20 (iii).] A pivoted flap in a sliding vehicle-window particularly for hand signalling is adapted to be automatically closed on opening the sliding panel by means of fixed abutments o which engage the channel members d of the flap and pivot same into the plane of the sash during opening movement. Spring-pressed bolts p in the abutment o retard the sash during opening by engaging stops q on the vertical stile f, these bolts being forced back by the stile of the pivoted flap c to allow the sliding movement to continue. The pivoted sash is retained in the open or closed position by springs enclosed in telescopic barrels m. The sliding stiles f have ribs sliding in felt-lined channels. Specification 301,590, [Class 20 (iii), Doors &c.l, is referred to in the Provisional Specification.
Patent GB-819896-A (GB)
Title: Improvements in or relating to machines for crimping covers on receptacles
IPC: B65B7/28
Filed: 1958-05-13
Abstract: 819,896. Closuring containers. FORDS (FINSBURY) Ltd. May 13, 1958 [May 14, 1957], No. 15302/58. Class 125(2). A container closure having a channelshaped edge taking over the container rim is crimped between a shoulder 13 of pressure plate 12 and a resilient ring 11 expanded by axial pressure applied by member 17, the ring 11 and shoulder 13 forming an annular throat 14 to receive the rim of the container and channelshaped edge of the closure during closuring. Member 17 is lowered to expand ring 11 by a hand-operated cam 22 acting on a rod 19 through a ball 21. The surface of shoulder 13 acting on the closure may be ribbed.
Patent GB-995005-A (GB)
Title: Improvements in or relating to electron-beam smelting furnaces
IPC: H01J37/305
Filed: 1962-04-19
Abstract: 995,005. Electron beam apparatus. W. C. HERAEUS G.m.b.H. April 19, 1962 [April 20, 1961], No. 15307/62. Heading H1D. In an electron beam smelting furnace having one or more electron guns 17, 18 housed in a separately evacuated chamber 15 above the main smelting chamber 1, electron-optical control means for accelerating, focusing and deflecting the beam of each gun are grouped in a cylindrical member 19 removably inserted in the cover member 4 between the two chambers. The diameter of the evacuation conduit 16 is relatively large compared with the diameters of the cylindrical members and the volume of the chamber 15 is large compared with the volume occupied by the electron guns.
Patent GB-771707-A (GB)
Title: Improvements in the manufacture of geiger-muller counters containing a halogen vapor
Inventor: JACQUET PIERRE
IPC: H01J47/08
Filed: 1955-05-27
Abstract: 771,707. Electro - polishing. COMMISSARIAT A L'ENERGIE ATOMIQUE. May 27, 1955 [June 1, 1954], No. 15338/55. Class 41. [Also in Group XL (a)] Metallic parts in a halogen-filled Geiger- Muller counter tube (see Group XL (a)) are electrolytically polished to prevent adsorption of the halogen. The parts are first pickled in an aqueous solution of nitric acid (10 per cent) and sodium fluoride (from 2 to 3 per cent) to remove any oxide, and are then brushed and washed. The polishing is carried out by suspending the parts in an electrolyte 8 contained in a vessel 13 surrounded by a water container 14 for adjusting the temperature of the bath to the desired point in a range of from 70‹ to 95‹ C. A cylindrical cathode 9, which may be of nickel, molybdenum, stainless steel, or a ferro-chrome or ferro-nickel alloy, is shown connected to the positive terminal of a D.C. source of about 12 volts, the negative terminal being connected to a rod 10 and a cylinder 11. The cathode 9 is supported by an insulator. 12 mounted on the rod 10. The cylinder 11 may be omitted if polishing of only the inner surface of the cathode 9 is required. The electrolyte 8 may be a self-passivating mixture of phosphoric or phosphochromic acid (250 gr. per litre) to which sulphuric acid may be added. Alternatively, the electrolyte may be sulphuric acid or a solution containing 95 per cent acetic acid and 5 per cent perchloric acid, in which case a subsequent passivating treatment by immersion in nitric acid or by anodic oxidization is necessary.
Patent GB-1509951-A (GB)
Title: Window structures
IPC: E05B65/08
Filed: 1975-04-15
Abstract: 1509951 Window bolts PERCY LANE GROUP Ltd 15 April 1975 15364/75 Heading E2A Sliding windows are provided with a locking bolt 40 which prevents, in the locking position, relative movement between them. Bolt 40 slides in channel 24 provided on one frame and engages via projecting tongue 46 a lip 34 provided on the other. Lip 34 is recessed at one point to give aperture 36 which, when aligned with tongue 46 permits the relative sliding of the windows.
Patent GB-504864-A (GB)
Title: Process for the manufacture of compensating spiral springs for watches, chronometersand the like
IPC: C21D9/02
Filed: 1938-05-23
Abstract: 504,864. Alloys. SOC.. DES FABRIQUES DE SPIRAUX REUNIES, and SOC. ANON. DE COMMENTRY-FOURCHAMBAULT ET DECAZEVILLE. May 23, 1938, No. 15389. Convention date, June 1, 1937. [Class 82 (i)] [Also in Group XXII] Compensating spiral springs for chronometers and the like are made from iron alloys containing specified proportions or ranges of proportions of aluminium, chromium, cobalt, copper, manganese, molybdenum, nickel, titanium, tungsten, vanadium, carbon, and silicon. It is stated that such alloys have a temperature coefficient of Young's modulus that is slightly positive and substantially constant over a considerable range about atmospheric temperature. Specifications 127,806 and 165,311, [both in Class 82 (i)], are referred to.
Patent GB-1573955-A (GB)
Title: Cyclic ethers
IPC: C12P1/04
Filed: 1977-04-13
Abstract: The novel compounds of the formula (I) <IMAGE> in which the substituents are defined in Claim 1, are obtained by fermenting a C-076-producing strain of Streptomyces avermitilis in an aqueous nutrient medium containing an assimilable source of carbon, an assimilable nitrogen source and inorganic salts under aerobic conditions and isolating C-076 from the fermentation broth. The novel compounds can be used as active components in pesticidal compositions and also for the prophylaxis and treatment of parasitic diseases.
Patent GB-753079-A (GB)
Title: Improvements in transistor amplifiers
IPC: G06G7/186
Filed: 1954-05-25
Abstract: 753,079. Electric analogue calculating systems. GENERAL ELECTRIC CO. May 25, 1954 [May 26, 1953], No. 15434/54. Class 37. [Also in Group XL (c)] In a circuit for deriving a function of an applied signal at a load Z3, Fig. 3, the input is fed to an impedance Z1 and to a temperaturestabilized transistor amplifier 11 an impedance Z2 being connected in the common input-output circuit of the amplifier. By suitable choice of components in the impedances Z1, Z2 the operations of differentiation, integration, and derivation of a fixed fraction of the input may be achieved. Since the amplifier gives a change of sign, if Z1 and Z2 are identical only a change in sign results. Double differentiation and integration may also be effected. Transistor circuit, Fig. 1. The PNP junction transistor T1 is operated in the earthed base circuit to present a low impedance between terminals 15, 12. The output is taken over resistor 11 and temperature-compensating germanium diode 13 to earthed emitter transistor T2 giving a gain of 10 to 20 together with phase inversion. Transistor T3 acts as a buffer stage giving a high output impedance. Employing a resistor 14 and capacitor 16, the first differential appears across the resistor 17 in negative form. In the case of a square wave, Fig. 2 (a), some of the input is transmitted due to the finite output impedance to give the wave, Fig. 2 (b). If the impedances 14, 16 are a capacitor and resistor, integration results or alternatively a resistor and inductor may be used. A capacitor and inductor give a double integration while two similar impedances give a fractional output.
Patent GB-119918-A (GB)
Title: Improvements in and relating to Brick Machines.
Inventor: MOUSSETTE OLIVER JOSEPH
IPC: B28B5/08
Filed: 1917-10-24
Abstract: 119,918. Moussette, O. J. Oct. 24,1917. Rotary-mould-table machines.-A pedestal 1, Fig. 1, supports above a shoulder a tower 3. The annular mould table 8 toothed externally and having six moulds rotates on the shoulder under an initial compressing plunger, a second compressing plunger 99 and an ejecting plunger 104 working respectively in guides 20 and 28 carried by the tower. The table is advanced by a mutilated gear-wheel 15 on a vertical shaft 16, and is held between advances by a snapbolt 86 which is drawn bv a cam 96 on the shaft. As shown in Figs. 16 and 17, the mould-cavity in the table 8 is occupied by a partitioned mould 9 and is provided at the bottom with a radially slidable grid 82 to correspond, from which by pins 115 is suspended a. closing plate 113 bearing followers 114 in register with the compartments and the gaps of the grid. When under the first plunger, the closing plate is merely supported by the heads of the pins, and the followers do not protrude into the compartments, but while the second plunger 99 is descending the closing plate is raised by a platen (not shown), and the followers are thrust up through the grid into the mould. In travelling to the ejecting plunger, inclines 116 on the table operate levers 117 on a bracket 118, and the levers acting on the closing plate 113, withdraw the followers, after which the carrying grid 82 is drawn away as a stud 83 (Fig. 1) thereon travels past a fixed cam 84. The mould is then under the ejecting plunger 104 and over a platen 34, which transfers the brick to a conveyer consisting of two endless chains 51 bringing a pallet per brick along a track 49 from a sloping shoot (not shown). The platen lifts the pallet off the track to receive a brick and then replaces it. The platen is actuated by a loaded lever 39, 38 over a cam 45 on a short shaft 46; the arm 38 is clamped to the arm 39 by set-screws providing adjustment. The conveyer is driven with intermission by a mutilated gear-wheel 58 in train with the shaft 46, which in turn is geared through a shaft 64 to the table-driving shaft 16. The plungers are supplied with steam by pipes 100 and 105. The plungers, compressing platen, and vertical shaft obtain motion from a main shaft 21, the second compressing plunger through an eccentric 22, the platen through eccentrics with pitmen 25, the .ejecting plunger through a radial shaft 31, a crank 30, and a connecting-rod 29, the first compressing plunger through a fellow radial shaft. The vertical shaft obtains motion through a side shaft 69 and eccentric or elliptic wheels 70, 71. The main shaft 21 is driven from a pulley shaft 78 through reducing bevel and spur gear comprising the wheels 76 and 72. The pulley shaft ends in a pinion 107 which can be operated by a hand-lever 108 with dogs 109, for setting or adjusting before applying power.
Patent GB-952106-A (GB)
Title: Improvements in or relating to methods of and apparatus for measuring the wall thickness of tubular bodies
Inventor: GRANEAU PETER
IPC: G01B7/06
Filed: 1961-04-28
Abstract: 952,106. Determining physical dimensions. BRITISH INSULATED CALLENDERS' CABLES Ltd. April 27,1962 [April 28, 1961], No.15492/61. Heading G1N. The thickness of a tubular body of metal, or of non-metallic material overlying a metallic layer, is measured by means of an A. C. energized detector coil system which helically scans the surface of the body, and the signals produced by the reaction in the coil of eddy currents in the metal are applied to an indicator or recorder through a phase discrimination circuit adjusted to reject that part of the signal due to curvature variation and leave a signal indicative of thickness variation. It is stated that the output signal due to change in curvature is about 90 degrees away in phase from the output signal due to change in thickness, while the output due to temperature variation lies between these phase directions. Detector coil system 1, including primary and secondary windings W1, W2, is resiliently mounted on a carriage resting on tube 14 under test. A support arm 17 rotatably supports the carriage through sleeve 16 and fits into terminal box 22 at its other end. Box 22 is mounted with two degrees of freedom on a support member 25 attached to a ring 36 (Fig. 4), arranged for rotation about tube 14. The tube moves longitudinally relative to ring 36 and coil system 1, the carriage mounting also permitting lateral and angular movements of the tube. Slip rings 54 are provided or ring 36. A balancing coil system 2 with primary and secondary windings W3, W4 is also mounted on the carriage either spaced from the tube surface or adjacent the surface, with its axis parallel to the tube axis. The primaries and secondaries may each be on separate non-magnetic formers,or bifilarly wound on two formers. Primaries W1, W3 are bridge connected to oscillator O, and secondaries W2, W4 are bridge connected to a band pass amplifier BPA whose output is passed through two phase detector channels, one, PD1, rejecting curvature variation signals, and the other PD2 rejecting temperature variation signals. The output of PD1 is applied to a CRO and through switches S1, S5 and S6 to chart recorder R. Capacitor C5 blocks slow changes due to temperature drift. The output of PD2 is integrated by capacitor C4 to provide a mean thickness indication. Potentiometers P2, P3 are initially adjusted using a tube of correct thickness and subsequent readings on recorder R with switches S1 to S6 in their centre positions indicate mean thickness plus temperature drift, the latter then being eliminated by adjusting P3 and turning the switches to their lower positions. Rotary potentiometer P1 provides a time-base signal for the CRO.
Patent GB-257870-A (GB)
Title: Improvements in or relating to playing cards
IPC: A63F1/02
Filed: 1926-06-19
Abstract: 257,870. United States Playing Card Co., and Albert, C. E. Dec. 9, 1925, [Convention date]. Card games.-In a packet of cards, the individual cards of two suits, for example spades and hearts as shown, are provided in at least one corresponding corner with an index, and the individual cards of the other two suits are each provided with an index near at least one corresponding corner thereof, the indexes of the cards of the latter two suits being placed adjacent the edges of the cards and spaced from the top edge a distance approximately equal to the lengthwise dimension of the indexes. Spacing lines are preferably placed immediately below the indexes of the first two suits, and immediately above the indexes of the second two suits.
Patent GB-820373-A (GB)
Title: Saw chain
IPC: B27B33/14
Filed: 1956-05-18
Abstract: 820,373. Sawing : mortising. McCULLOCH MOTORS CORPORATION. May 18, 1956 [June 6, 1955], No. 15530/56. Class 145. A saw chain similar to that of Specification 812,385 is described but the depth gauge between the leading cutter 45 and the following cutter 46 is omitted, the leading cutter 45 itself acting as a depth gauge for the closely-following cutter 46 and the cutting reactions of the two cutters balancing out at the chain rivet 49. Also, one cutter is fitted on a side link and the other on a central link and the runners 53 on the connecting links are more elongated.
Patent GB-553185-A (GB)
Title: Improvements in or relating to motor road vehicles
IPC: B60K5/02
Filed: 1941-12-03
Abstract: 553,185. Motor vehicles. WILLIS, J. E. Dec. 3, 1941, No. 15561. [Class 79 (iii)] In a motor vehicle provided with a readily-interchangeable power unit slidably mounted on rails, the power unit comprising the engine 14, gear-box 30, clutch, radiator 17, instrument board and accessories is mounted on a subframe 15 having rollers 18 adapted to slide on rails 19 on the chassis frame 1, means being provided for securing the sub-frame to the chassis and for automatically coupling up the propeller shaft, the clutch and throttle controls and the electric circuits. The rollers 18 run on the rails 19 until the power unit is in position for use; in this position, as shown in Fig. 4, the rollers enter housings 21 and the sub-frame 15 rests on the rails 19 along the whole of its length. Brackets 22 on the chassis prevent upward movement of the subframe, and pins 23 are inserted to prevent longitudinal movement. The battery connections are automatically made when contacts 27 on the sub-frame engage spring contacts 26 on the chassis the sub-frame engage spring contacts 26 on the chassis. The gear-box shaft 29, Fig. 9, is automatically coupled up to the propeller shaft 12a, Fig. 10, by means of a splined coupling sleeve 32 centred by springs 33 in a universal joint 31 concentric with a ball joint formed by a ball 36 on the torque tube 12, a half-casing 35 on the chassis and a half-casing 34 on the sub-frame. The clutch and throttle pedals 37, 38 are mounted on the chassis and arms 41 on their shafts 39, 40 automatically engage with the corresponding parts on the subframe as the latter is slid into position. In order to remove the power unit the front portion of the driver's cab is raised about hinges, fuel pipe joints are disconnected, and the pins 23 are removed, after which the power unit can be slid along the rails 19 on to a trolley and replaced by another unit.