baber/WOPTO huggingface dataset:
Patent GB-609091-A (GB)
Title: Improvements in dissolving apparatus
IPC: B01F27/91
Filed: 1946-03-05
Abstract: 609,091. Mixing-machines. TRANSPARENT PAPER, Ltd., and WADDLE, W. March 5, 1946, No. 6893. [Class 86] Agitating-apparatus for promoting the solution of solid materials in liquid media comprises a vessel in which a circulating motion is imparted to the solvent liquor by a helically bladed impeller rotatably mounted with the trailing edge or edges of the blade or blades closely sweeping a grid or screen so that accumulations of solid matter are forced through the interstices of the grid or screen whilst the blade or blades are so formed as to maintain a constant circulation of the solvent liquor within the vessel, the impeller and screen or grid being so arranged within the vessel that the materials under treatment are repeatedly circulated through the screen or grid. An impeller 4 is mounted on a rotary shaft 5 within a vessel 1 provided with a jacket 2 for a temperature controlling medium. The straight trailing edges 6 of the blades of the impeller closely sweep the surface of the grid 7 and force solid materials therethrough. From below the grid 7 the solid materials are carried upwards by the circulating stream of liquid outside a cylindrical baffle 8 and are drawn downwards by the impeller 4 through a coarse screen 9 to be forced again through the finer screen 7. The boss of the impeller 4 is forced downwardly against a stop on the shaft 5 by a spring 12 held under compression by a collar 13. The blades of the impeller are attached to the boss by set screws 14 passing through slotted holes so that the pitch of the blades' may be adjusted. The grid 7 may be raised or lowered relatively to the impeller by the adjustment of lock nuts on threaded bars 15. The baffle 8 may be perforated or of wire mesh and the screen 7 may be of conical form.
Patent GB-860156-A (GB)
Title: Improvements in or relating to heat exchanger devices
IPC: F23M20/00
Filed: 1958-03-05
Abstract: 860,156. Plate type heat exchangers. RICHARDS, J. M., GETHIN, W. H., and MILLINGTON, R. G. March 4, 1959 [March 5, 1958], No. 7037/58. Class 64(3) A heat exchanger comprises an assembly of strips 1 of a metal such as aluminium, each strip being of channel section with flanged edges 9 (Fig. 3) and the ends 3 of each strip being overturned in the manner shown in Fig. 2. The strips are assembled in abutment with adjacent strips facing in opposite directions (see Figs. 4 and 5) so that channels for two heat exchanging fluids are formed. The abutting ends 3 of the strips co-operate.to form header plates. The channel bases may have dimples 7 or be fluted, the dimples or flutes abutting in the assembly as shown in Fig. 5. Alternatively, in the case of an oil cooler, the oil passages which are formed by the co-operating channels of adjacent strips may have plane walls and thin corrugated strips are then disposed in these passages. The passages for the cooling fluid which may be air, are fitted with corrugated strips 15 (Fig. 4). The assembly may be dip-brazed.
Patent GB-936843-A (GB)
Title: Improvements in and relating to data storage devices
IPC: H03K23/76
Filed: 1960-02-29
Abstract: 936,843. Circuits employing bi-stable magnetic elements. INTERNATIONAL BUSINESS MACHINES CORPORATION. Feb. 29, 1960 [Feb. 27, 1959], No. 7044/60. Class 40 (9). A data storage device comprises two transformer elements 10, 11 each having a saturable core, input windings being connected to a common input circuit 12, and output winding being connected to a common output circuit 13, the arrangement being such that the establishment of a current in either of the circuits tends to produce opposing currents in the windings of the other circuit, the relative magnitudes of which depend on the states of saturation of the cores. The input circuit includes a loading element 17 which causes a low impedance to be reflected into the output circuit when current flows in the input circuit in one direction. The condition of the device is tested by the application of A.C. (e.g. from line A) to the output circuit, in which currents of different magnitude are developed according to the saturation state of the two cores. In the OFF condition the remanent states of the cores are in the same direction so that the applied A.C. takes the cores through identical hysteresis loops. The primary windings being oppositely poled, no current flows therein, so that the secondaries present high impedance and no current is applied to the succeeding stage (Fig. 2 shows a plurality of such devices arranged as a shift register). In the ON state the cores have opposite states of remanence. During the first positive half cycle, core 10 remains saturated, and the voltage induced across core 11 is short circuited by rectifier 17. The secondary winding thus presents low impedance and a large part of the voltage is thus applied to the succeeding stage. The core 11 is partially demagnetized on this half cycle. On the succeeding negative half cycle, the roles of cores 10 and 11 are reversed, and a negative signal is sent to the succeeding stage. In this case, however, the initial part t 1  (Fig. 5a) of the half cycle is missing since this corresponds to the case where neither core is saturated (so that the oppositely poled secondaries present high impedance). The procedure continues on subsequent half cycles, the periods t 1 , t 2  ... progressively increasing as the cores leave the saturated condition more and more in each half-cycle, so that the current fed to the succeeding stage dwindles to zero with the cores ultimately traversing the whole of their hysteresis loops together, so that they then are in identical magnetic states, i.e. they are in the OFF state. In the succeeding stage, the negative half cycles are suppressed by the rectifier in the input circuit and the positive half cycles magnetize the cores in opposite directions. Step by step shifting of the registrations is effected by alternately pulsing line A and line B with A.C. In a modification, Fig. 3 (not shown), a feedback condenser is connected between the point 13 and the primary windings to maintain the device on the ON condition for as long as the A.C. pulse is applied.
Patent GB-565383-A (GB)
Title: Improvements relating to liquid fuel injection pumps for internal combustion engines
IPC: F02M59/48
Filed: 1943-05-04
Abstract: 565,383. Fuel-injection pumps. C.A,V;, Ltd., NICOLLS, W. E. W., and EVANS, F. M. May 4, 1943, No. 7053. [Class 102 (i)] A fuel-injection pump for an internal-combustion engine comprises a plunger barrel j within a cylinder c which is inserted in a bore d in a body part a and which has at its outer end a head e formed with slots g for bolts f to secure it to the body part, angular adjustment of the cylinder relative to the body part being effected by screws 5. A key n and slot o prevent rotation of the barrel relative to the cylinder. The slidable and rotatable plunger s extends beyond the barrel and is provided with a collar t with a groove 3 engaged by a projection 2 on a pinion u which is rotatable on the barrel by a slidable toothed rack v and which is provided with ball bearings z. The rack v has additional teeth engaged by a toothed segment 6 on a short shaft 7 movable angularly by a lever 8.
Patent GB-526018-A (GB)
Title: Improvements relating to zeroizing means for indicating mechanism
IPC: G06M1/28
Filed: 1939-03-06
Abstract: 526,018. Zeroizing-mechanism. PRECISION METERS, Ltd., and HORTON, F. March 0, 1939, No. 7302. [Class 106 (i)] Means for zeroizing the indicating mechanism of a liquid dispensing apparatus comprise a finger knob and clutch means operative to rotate the spindle of the indicating means under normal usage but ineffective in the event of the knob being jerked or rotated above a predetermined speed. As shown in Fig. 1 the knob comprises an outer part 4 and an inner part 5 which serves as one of the clutch members. The other clutch member 2 is supported on the part 5 by a ball race 8 and carries the indicating spindle 3 by a screwed sleeve 7. The member 2 has an axial extension 9 engaging a ball 11 in the knob part 4 and is formed with recesses 12, Fig. 2, for engaging with balls 14 to form a driving connection during the zeroizing operation. Diametrically opposed recesses 13 in the inner part 5 of the knob receive the balls if the knob is rotated too quickly.
Patent GB-1179764-A (GB)
Title: Improvements in and relating to Control Apparatus and to Burner Control Valves
IPC: G05D23/08
Filed: 1967-02-15
Abstract: 1,179,764. Valves. HONEYWELL Inc. 15 Feb., 1967 [3 March, 1966], No. 7305/67. Heading F2V. [Also in Division G3] Gas is supplied to a burner (not shown) through a spring-loaded diaphragm operated valve 16. The diaphragm is subject on one side to outlet pressure and on the other side to pressure set up in a control chamber through two nozzles 27, 28 connected respectively with the inlet and outlet and obturated by valves 36, 37 of resilient material such as rubber carried on a lever 35. This lever is loosely pivoted on a bimetal strip 31 by a bent shouldered end (35b), Figs. 2-6 (not shown), extending through a triangular slot (31a) in the bimetal. Lever 35 is biased by a spring 40. The bimetal responds through an electric heater 34 to a thermostat 42 in circuit with a supply transformer 41. In a de-energized position as shown, nozzle 28 alone is open, the control chamber is at outlet pressure and the main valve is closed. On energization the bimetal lifts the lever 35 so that it pivots on nozzle 27 until nozzle 28 is closed and 27 opened. The movement is limited by a stop 25b. The device can be operated manually in emergency by a crank-shaft and handle (50, 50c) which lifts the bimetal. Ambient temperature compensation is provided by making the lever 35 also a bimetal so that it curls upwardly with temperature increase.
Patent GB-526057-A (GB)
Title: Improvements in or relating to electric signalling or controlling systems
IPC: G09F9/00
Filed: 1939-03-07
Abstract: 526,057. Electric indicating and control systems. ELECTROFLO METERS CO., Ltd., DAVIES, A. J., and MEEKS, L. E. March 7, 1939, No. 7415. [Class 40 (i)] [Also in Group XXXVII] In a self-balancing measuring, indicating or controlling system using for example a selfbalancing potentiometer or bridge, a coil displaceable in a magnetic field in accordance with variations in a quantity to be measured, indicated or controlled, displaces a second coil in an A.C. field so that a voltage is induced therein dependent on the displacement, the power for restoring the first coil to the undeflected position being derived from electric means such as reversible motor or a motor with reverse drive clutches controlled by a pair of gas discharge tubes one or other of which is rendered conductive by the voltage in the second coil. A primary coil 1 moving in the field of magnet 2 in accordance with variations in a quantity is connected to a second coil 3, moving in an A.C. field 5, the output of which is used to effect the control or indication desired. As shown in Fig. 2, a reversible motor 10 controlled by the output of coil 3 has windings in the anode circuits of gas-filled tubes 12, 14. A.C. is fed to the anodes and grids of the tubes in phase opposition so that they are normally non-conducting. The output of coil 3 is amplified by valve 15 and applied across resistances 20 in the grid circuits of the tubes 12, 14. The resulting voltages across resistances 20 are quadrature with the supply, leading or lagging according to the direction of movement of the coil, so that one or other of the tubes becomes conducting to complete the circuit of one or other winding of the motor.
Patent GB-787433-A (GB)
Title: A cubicle for mercury arc rectifier apparatus
IPC: H01J13/02
Filed: 1955-03-15
Abstract: 787,433. Converting. HACKBRIDGE & HEWITTIC ELECTRIC CO., Ltd.,and PETERS, H. J. March 14, 1956 [March 15, 1955], No. 7522/55. Class 38 (2). [Also in Group XL (a)] Mercury arc rectifier tubes are supported one above the other in one or more units removably mounted on a base containing a fan and auxiliary electrical apparatus. Two corner units, Fig. 5, consist of tubular frameworks. Each rectifier 18 is supported at three points on a bent tube 14 and two short tubes 14<SP>1</SP>, 14<SP>2</SP> welded to the tube 14. Asbestos tape is wound round the tubes at the points of contact. A unit extending over half the base, Fig. 4, has the rectifiers supported by rings 22-25 which are carried by tubular platforms 20, 21. The outer sides of the units are closed by panels, e.g. of sheet steel or aluminium. The rectifiers are also held firmly by straps 34.
Patent GB-330529-A (GB)
Title: Improvements in trouser-stretchers
IPC: A47G25/66
Filed: 1929-03-08
Abstract: 330,529. Marshall, G. March 8, 1929. Trouser stretchers.- The invention relates to internal trouser stretcher such as the type described in Specification. 237,516, and consists in means for positively closing as well as opening the creasing members by means of wedges. In the construction shown, the inner arms or side mem bers of the wedges 6 engage between the inclined inner edges of stretcher members 1, 2 and rollers 9 or pins carried by the latter. Relative longitudinal movement of the stretcher members is prevented by a pin 13 carried by one stretcher member engaging a transverse slot 12 in the other. In a modification in which solid wedges are used, a pin and slot connection is provided between the wedges and the stretcher members.
Patent GB-1446021-A (GB)
Title: Method for the refining of molten metal
IPC: C21C7/00
Filed: 1973-02-15
Abstract: 1446021 Refining steel UDDEHOLMS AB 15 Feb 1974 [15 Feb 1973] 7588/73 Heading C7D Steel substantially free from inclusions which are not plastically deformable at a hot forming temperature e.g. 1,000 to 1100C is produced by treating the molten steel contained in a vessel having a lining substantially free from calcium and magnesium compounds by introducing a slag powder having a composition within the boundaries A B C D A in Fig. 1 and a melting point lower than that of the steel and a density lower than that of the steel below the surface of the steel melt whereby the slag reacts with any inclusions in the molten steel bring- ing some of the inclusions to the surface of the molten steel and transforming other inclusions so that any inclusions which are present in the steel after solidification are plastically deformable at hot forming temperatures. The steel melt may be produced from either acid or basic steels (e.g. basic steel produced by smelting, decarburizing, treating with lime to remove sulphur and deoxidizing using a basic lined open hearth or electric arc furnace) by transferring the melt to a neutral or acid lined converter, ladle or induction furnace and injecting the slag powder, which may be produced by melting the slag components together to provide a mixture thereof of particle size below 2 mm., in a stream of argon or methane through a tuyere near the base of the furnace in which the melt temperature is 1600C. The steel produced may be low or high alloy tool steel, high strength structured steel, ball bearing or stainless steel and may be used in the manufacture of cutting tools and springs.-
Patent GB-1468551-A (GB)
Title: Magnetic playback transducer
IPC: G11B5/49
Filed: 1974-02-19
Abstract: 1468551 Flux-sensitive magnetic heads MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 19 Feb 1974 [20 Feb 1973 (8) 11 Aug 1973 (2)] 7632/74 Heading G5R A magnetic playback head comprises a substrate 1, Fig. 5, of semi-conductor material, two spaced apart electrodes 2a, 2b supported by the substrate 1, a magnetic flux-sensitive element 3 bridging the electrodes, and a magnetic body (5), Fig. 2 (not shown), of high permeability in abutment with the element 3. The electrodes 2a, 2b may be formed by vapourdeposition of copper or aluminium on to a silicon semi-conductor substrate 1, or by diffusion, anodic oxidation or implantation of such conductive material into the substrate 1. The flux-sensitive element 3 may be a thin film formed by vapour-deposition, which may be carried out in a magnetic field so that the element 3 is anisotropic in the direction of bridging the electrodes. Element 3 may be a Hall element or formed by magneto-resistive ferromagnetic material, such as permalloy. A multitrack head for n tracks may comprise n + 1 electrodes 2a, 2b, 2c &c. extending away from the working face 4 and bridged by a common flux-sensitive element 3, or may comprise a first electrode with a section (6<SP>1</SP>), Fig. 3 (not shown), extending parallel to face 4, n second electrodes (2a), (2b) ... spaced from and extending away from portion (6<SP>1</SP>), and n elements 3 bridging respective second electrodes to the common portion (6<SP>1</SP>). The head units may be connected via leads 9 to an integrated circuit 7 produced on the common substrate 1. The individual head units HP 1  to HP n , Fig. 7, of a multitrack head having magneto-resistive elements 90, may be connected in sequence into one arm of a bridge 96, having an output connected to differential amplifier 98, by respective transistors QP 1  to QP n  turned on in sequence by clock pulses applied to ring counters or shift registers FF 1  to FF n . In a similar circuit for sequentially reading data from the head units of a multitrack head using Hall elements, such elements are connected in series between bias current terminals (103), (104), Fig. 8 (not shown), a common output terminal (105) is connected to one signal detecting terminal of each Hall element, a second common output terminal (106) is connected via respective amplifiers (GA 1 ) to (GA n ) to the second signal detecting terminals of the Hall elements, and the amplifiers are gated on in sequence by clock pulses fed to ring counters or shift registers (FF 1 ) to (FF n ).
Patent GB-843957-A (GB)
Title: A supporting arrangement for the roof of workface gallerles in mines
IPC: E21D15/60
Filed: 1957-03-07
Abstract: 843,957. Mine roof supports. HAARMANN, A. March 7, 1957 [Dec. 3, 1956], No. 7638/57. Class 20(2) In advancing the pit props in an inclined seam, the props 4 are disposed in staggered rows A, B &c. parallel to the coalface 2, and each of the props in row A is guided through the opposite gap between the adjacent pair of props in row B by sliding its footplate 5 along a rail 8 attached to the lower prop in row B. The rail 8 comprises an angle iron cranked slightly at 9 and detachably secured to the plate 5 in the row B by engaging the downwardly projecting pins 10 behind the end wall of the plate or in vertical holes in the end wall. If the gap between adjacent footplates in row B is less than the length of the footplate to be moved, a slide rail curved in the vertical plane is secured to the upper face of the footplate so that the props can be guided over the footplate.
Patent GB-776954-A (GB)
Title: Process for the production of protective layers on surfaces of metals
IPC: C09D1/02
Filed: 1955-03-16
Abstract: Silicate layers are formed on metal surfaces by applying thereto an aqueous solution comprising an alkali metal silicate, having a ratio of alkali metal oxide to silicon dioxide within the range 1:2.5 to 1:5, and at least one alkali-resistant water-soluble compound of a "heavy metal" (defined as a metal which has a density greater than 4 g/cc.), the weight of the heavy metal in this compound being not more than 2 per cent, preferably not more than 1 per cen, of the weight of the total solids in the solution, and heating the coated surface to a temperature of 100 DEG -400 DEG C. so as to form an adherent non-crystalline silicate layer in which at least a part of the heavy metal is present in the form of a silicate.  The layer may be subjected to an after-treatment by heating to a temperature higher than 400C DEG . The heavy metal is preferably a metal which exhibits variable valency, e.g. As, Ri, Co, Cr. Cu, Fe, Mn, Mo, Ni, Pb, Sb, Sn and V; other metals which may be used include Ag and Zn.  Water-glass is used as the alkali metal silicate.  The water in the treating solution may be partially replaced by one or more organic substances soluble in water, e.g. alcohols, aldehydes and ketones. Water-repelling layers may be obtained (a) from solutions which contain substances capable of polymerizing when the layer is heated, or (b) by after-treatment of the layers with compounds such as silicones or isosolid metals or their metal coatings procyanates. The layers may be formed on solid metals or their metal coatings produced, for example, by vaporization.  Eight specific examples of the treatment are disclosed.
Patent GB-511414-A (GB)
Title: Improvements in or relating to trousers
IPC: A41D15/00
Filed: 1939-03-10
Abstract: 511,414. Trousers &c. GLAUS. March 10, 1939, No. 7754. Convention date, Sept. 5, 1938. [Class 141] The leg portions of trousers for sports or ordinary wear are divided, and the parts of each leg portion are detachably connected together so that the trousers can be worn as long or short trousers. In the form shown, the parts 3, 4, of each leg portion are connected together by a sliding clasp fastener 6 which is concealed in wear by a flap 7 on the part 3. The sliding- clasp fasteners may be replaced by buttons, eyes, draw members &c.
Patent GB-912650-A (GB)
Title: Improvements in or relating to shoe upper conforming machines
IPC: A43D21/12
Filed: 1958-03-11
Abstract: 912,650. Shoe upper conforming machines. BRITISH UNITED SHOE MACHINERY CO. Ltd., and GADD, R. O. C. March 10, 1959 [March 11, 1958], No. 7763/58. Class 17 (1). The shoe-supporting means described in Specification 871,990 is modified to provide a retarder 200 having an upstanding flange 202 which serves to position the toe end portion of the last L and which also serves as an upper controlling means by pressing against the flexible toe band 118 during the up-wiping operation. The retarder 200 has a base 220 which is engaged by springs 222 to urge the retarder into an upper position for positioning the last L. Spring-loaded hold-downs 204 press the insole I against the bottom of the last which is further supported by a number of shoe rests 120. After the upper has been gripped at its marginal portions by the grippers 100 and pulled down, the toe pad 134 is brought down and simultaneously the flexible toe band 118 is brought into operation, pressing the marginal portion of the toe upper against the flange 202 of the retarder 200 and urging the retarder downwardly against the springs 222 whereby the toe upper conforms to the shape of the toe end portion of the last. At the end of the movement of the toe band 118 the retarder 200 is retracted by a plunger 226 sufficiently to enable the forepart wipers 110 to perform their in-wiping movements but at the same time permitting the upper edge of the flange 202 to press the marginal portions of the toe upper against the underside of the wipers 110.
Patent GB-104595-A (GB)
Title: Improvements in the Composition of Concrete or Artificial Stone for Blocks and the like.
Inventor: HOWELLS EVAN OWEN CHARLES
IPC: C04B28/04
Filed: 1916-03-23
Abstract: 104,595. Howells, E. O. C. March 23, 1916. Concretes.-A mixture of about 4 parts of granite and 1 part of Portland cement, to which is added about 10 per cent. of Bessemer steel slag, is used for making artificial stone.
Patent GB-385259-A (GB)
Title: Improvements in or relating to installations for receiving and reproducing acoustic oscillations
IPC: E04B1/99
Filed: 1931-03-13
Abstract: 385,259. Public - address systems. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. March 13, 1931, No. 7795. Convention date, March 19, 1930. Void [Published under Sect. 91 of the Acts]. Drawings to Specification. [Class 40 (iv).] In a public-address system, reaction between the loud-speakers and microphone is prevented by continuously varying the distance of travel of sound between them. This may be effected by (1) mounting the microphone so as to be slidable or oscillatory as a pendulum, (2) mounting the loud-speakers so as to be movable vertically by suspending them from a cord hung over pulleys, (3) inserting a periodicallylifted cloth screen between the loud-speakers and microphone, or (4) using two separated microphones alternately connected up by a switch or alternately screened.