baber/WOPTO huggingface dataset:
Patent GB-924906-A (GB)
Title: Improvements in or relating to hydraulic drives
Inventor: LESLIE WILLIAM HENDERSON PATER
IPC: F15B11/18
Filed: 1960-09-24
Abstract: 924,906. Machine-tool details. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 25, 1961 [Sept. 24, 1960], No. 32904/60. Class 83 (3). [Also in Group XXIX] An hydraulic drive for causing relative linear movement between two bodies 10, 11, comprises a cam face 14 on one of the bodies extending in the direction of relative movement, piston members 16 on the other body reciprocable at rightangles to the direction of relative movement and engageable with the cam face, and means for supplying hydraulic fluid to the piston members to urge them against the cam face, the cam face and piston members being arranged so that the resultant force causes the relative movement. The bodies may comprise the table 10 of a machine tool and the bed plate 11, the former having on its underside a housing 12 containing two rows of hardened cylinder linings 15 receiving the piston members which may be in the form of balls 16. The two rows of balls engage two cam faces 14 and hydraulic fluid can be supplied to and exhausted from a plurality of chambers, each of which is associated with a pair of balls one in each row, from inlet and outlet manifolds 19, 20 connected to the chambers by valves 21, 22. A rack 23 engages the heads of the valves and during movement of the table the valves are actuated so that fluid is supplied to the chambers associated with the balls engaging parts 24 of the cam faces inclined in the direction of movement desired of the table, the chambers associated with the balls engaging the oppositely-inclined parts of the cam faces being connected to the exhaust conduit. The exhaust from the chambers is maintained at a pressure sufficient to provide some resistance to the movement of the table. The direction of movement may be reversed by connecting the supply to the manifold 20 and the exhaust to the manifold 19 or by moving the rack 23 a distance equal to half the pitch of the cam faces. The rack 23 may be mounted on roller bearings, spring strips or oil-floated hydrostatic bearings and be moved electromagnetically. An accumulator may be included in the hydraulic circuit to supply instantaneous demands of fluid pressure when it is desired to accelerate the table.
Patent GB-282055-A (GB)
Title: Improvements in feeding mechanism for sewing machines
IPC: D05B27/02
Filed: 1927-12-06
Abstract: 282,055. Union Special-Maschinenfabrik Ges. Dec. 11, 1926, [Convention date]. Feed by wheels.-A pair of auxiliary feed rollers b, c, and actuating mechanism d therefor are all mounted on a common bracket a which is secured, as by screws a<1>, to the base plate e. The feed-mechanism d is of the intermittent clutch type and is actuated by an arm x on the rocker s for the feed dog o. The connection comprises a rod y adjustably secured to the arm x. The upper roller c is carried on the end of a lever f pivoted at g, and may be mixed by depressing a cam lever h, or by a treadle connected to the end of an extension n.
Patent GB-1439929-A (GB)
Title: Road vehicle anti-skid braking systems
IPC: B60T8/70
Filed: 1972-07-14
Abstract: 1439929 Aritiskid braking systems LUCAS ELECTRICAL Ltd 14 June 1973 [14 July 1972] 32984/72 Heading F2F An antiskid braking system releases the brakes from the front wheels of the vehicle if the rotational deceleration of the front wheels exceeds a predetermined value and independently releases the brakes from the rear wheels if the deceleration of the rear wheels exceeds a predetermined value and includes means operable when the brakes are applied for detecting locking of a rear wheel and disconnecting the antiskid control from the front wheels so restoring normal braking thereto. The control is also disconnected from the rear wheels on detection of locking of a rear wheel but a delay network is incorporated so that momentary locking of a rear wheel does not disconnect the control. The antiskid control is inhibited when the front wheel rotational speed falls below a set low value and in the case of a front wheel drive vehicle the control is inhibited when front wheel spin occurs when the vehicle moves from rest, the inhibiting means being wired to the brake warning lamps so that the system is inhibited except during braking.
Patent GB-335423-A (GB)
Title: Improvements relating to metal doors and walls
IPC: E06B3/70
Filed: 1929-10-31
Abstract: 335,423. Schwarze, P. Oct. 31, 1929. Compound forms; plates; windows.-Sheet metal panels for doors or walls are made by glueing to a metal sheet a a backing b of wood and then pressing to the required shape. The pressing may be effected at the same time as the glueing together of the wood and metal. The assembling of a door or wall may be effected by means of a frame d, Fig. 2.
Patent GB-936318-A (GB)
Title: Improvements relating to polypropylene compositions
IPC: C08L77/00
Filed: 1961-09-14
Abstract: Polypropylene compositions of improved thermal stability and dyeability, comprise a minor proportion, e.g. 5 to 15%, of an interpolyamide obtained by the condensation of a mixture of hexamethylenediammonium adipate and hexamethylenediammonium sebacate. Specification 873,830 is referred to.
Patent GB-665090-A (GB)
Title: Improvements in regulating systems employing photocells
Inventor: COOMBES JOHN ERIC MIDDLEBROOKE
IPC: G05B11/01
Filed: 1949-12-28
Abstract: 665,090. Photo-electric control of temperature. METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. Oct. 27, 1950 [Dec. 28, 1949], No. 33119/49. Class 40 (iii). [Also in Group XXXV] A variable on-off period type of control comprises a multivibrator 16, 17 having a control relay 19 in the anode circuit of one valve, and pair of photo-cell elements 6, 7 connected to the grid circuits, and differentially illuminated by a beam of light from, e.g., a mirror galvanometer, Figs. 1, 1A (not shown), responsive to any variable such as temperature detected by a thermocouple or resistance thermometer, or a float-operated mirror to control fluid level, whereby the symmetry of the multivibrator may be varied in either direction to vary the open/closed period of the relay contacts 20 in each cycle. Large error signals which result in the illumination of one photo-cell element only will stop oscillation so that the relay remains open or closed until the variable approaches within, say, ten per cent of its required value.
Patent GB-1279850-A (GB)
Title: Core member for structural panel
Inventor: HALE JESSE RAYMOND
IPC: B29C61/00
Filed: 1969-07-01
Abstract: 1279850 Sheet forming; laminates J R HALE 1 July 1969 [1 July 1968] 33149/69 Headings B5A and B5N [Also in Divisions B3 and C1] A core member for use in a laminated structural panel consists of a polygonal base portion 11, a nodal portion 22 spaced from the base portion and lying in a plane paralled to it, and a curved surfaced portion extending between the base and nodal portions and having the form of a doubly ruled surface (i.e. a hyperbolic paraboloid). To form the embodiment shown in Figure 2, a square sheet is clamped around its edges and drawn to a height equal to half the length of one of the edges of the sheet using a frusto conical pin having a length equal to half the length of the sheet edge, a top circular surface the diameter of which is equal to half the length of a diagonal of the sheet, and a bottom surface the diameter of which equals the length of one side of the sheet. Alternatively a plug having an octagonal upper surface may be used. The length of the plug may be varied in which case curved surfaces of different hyperbolic paraboloidal shapes will be formed. A plurality in such members may be drawn from a single sheet. In use, the members are placed between flat sheets (see Figure 3 not shown) to form laminated structural panels. Other elements in which the side walls of the element are folded back on themselves so that the nodal portions lie in the same plane as the base are disclosed (see Figures 4 and 8 not shown). Various laminates in which a single layer of such elements is interposed between sheets or in which a double layer, base to base or nodal portion to nodal portion, are interposed, between the sheets are also disclosed (see Figures 3, 5, 6 and 7 not shown). The core members can be made from reinforced or unreinforced plastics, metal, glass or paper.
Patent GB-1147647-A (GB)
Title: Production of substituted ammonium salts
Inventor: KELLY WILLIAM
IPC: C07C215/40
Filed: 1965-08-03
Abstract: 1,147,647. Salts of mono-(hydroxyalkyl)- ammonium compounds. WARD BLENKINSOP & CO. Ltd. 2 Aug., 1966 [3 Aug., 1965], No. 33243/65. Heading C2C. A water-soluble salt of a mono-(hydroxyalkyl)-ammonium base of the formula where R, R<SP>1</SP> and R<SP>2</SP> are C 1-3  alkyl groups and n is 2 or 3, is prepared by gradually introducing into a circulating aqueous solution of a watersoluble normal salt of a trialkylamine RR<SP>1</SP>R<SP>2</SP>N, a liquid alkylene oxide containing 2 or 3 carbon atoms, the rate of introduction of the alkylene oxide being such that it is substantially wholly absorbed into the circulating aqueous solution as it is introduced. The reaction is preferably carried out at atmospheric pressure. The pH of the circulating solution rises and the addition of alkylene oxide can be arranged to stop, when the pH reaches a desired value, further time being usually necessary to allow the reaction to go to completion. A suitable apparatus is described and an example is given of the conversion of trimethylamine hydrochloride to choline chloride.
Patent GB-1383853-A (GB)
Title: Zoom lens system operatable for extremely short distance photo graphing
IPC: G02B15/22
Filed: 1972-07-17
Abstract: 1383853 Zoom lens SANKYO KOGAKU HOGYO KK 17 July 1972 33289/72 Heading G2J A zoom lens has a front element L 1  which is movable to focus in normal settings and a negative group followed by a positive group simultaneously moveable to vary the focal length and arranged additionally that part at least of the third group is moved, at the shortest focal distance setting, for focusing in such close-up position.
Patent GB-1129866-A (GB)
Title: Recording and playback system
IPC: A61B5/336
Filed: 1966-07-25
Abstract: 1,129,866. Recording and playback. INTERNATIONAL BUSINESS MACHINES CORP. 25 July, 1966 [4 Aug., 1965], No. 33308/66. Heading G5R. A recording and play-back system includes an amplifier with first and second impedances which act either as input and feedback impedances to the amplifier or vice versa depending on whether the system is recording or playing-back. When recording, switches in the position shown, an input signal is applied via input impedances 8, 10 to an amplifier 12 which supplies an output to frequency modulate an oscillator 20. The oscillator output is connected to a tape recorder 35 and also via a demodulator circuit, including single shot circuit 40, clipper 42 and L.P. filter 46, to a feedback impedance 50 connected to the input to the amplifier. During play back, switches in the opposite position, the output signal from the recorder is demodulated by the circuits 40, 42 and 46 and applied via impedance 50, acting as input impedance, to the amplifier 12. The output of the amplifier is connected to output load 26 and also via impedances 8, 10 acting as feedback impedances to the amplifier input.
Patent GB-624170-A (GB)
Title: Improvements in or relating to power transmitting couplings
IPC: F16D23/06
Filed: 1945-12-10
Abstract: 624,170. Synchromeshed claw clutches. BORGWARNER CORPORATION. Dec. 10, 1945, No. 33330. Convention date, Feb. 17, 1944. [Class 80 (ii)] To effect positive release of a friction synchronising- cone 12 immediately prior to meshing engagement of associated toothed clutch-members 6, 11, the latter have cam-surfaces 27, 28, which during the final axial engaging movement of the toothed clutchsleeve 11 (position shown), impart a positive inward thrust to levers 22, pivoted at 23 to the synchronising- cone 12, which latter is thereby moved positively axially away from the co-operating friction cone 16 on the toothed member 6. The clutch-sleeve 11 is splined on a hub 8 secured to a shaft which freely carries two toothed members such as 6, integral with pinions controlling change-speed or reverse gearing. During engagement initial axial thrust is imparted to the synchronising-cone 12 by the sliding clutchsleeve 11 through a spring-ring 32 which, in the neutral position, engages a groove 30 in the sleeve 11. The synchronising-cone 12 has the usual pointed balk-teeth 18, which align with the pointed ends of the teeth in the sleeve 11 to transmit axial pressure from the latter to the cone 12 until synchronism is reached, whereupon the cone 12 is turned relatively to the clutch-sleeve 11, in opposition to tangential coil-springs 35 in pockets between the sleeve 11 and cone 12, to permit passage of the clutch sleeve 11 to mesh the member 6.
Patent GB-392980-A (GB)
Title: Improved process of refining sulphur
IPC: C01B17/02
Filed: 1931-12-01
Abstract: In the purification of sulphur from arsenic, antimony, or bismuth and insoluble materials by treatment in a molten condition with an aqueous solution or suspension of a purifying-agent under pressure, the molten sulphur and purifying-agent are moved in continuous counter current and, to bring the liquids into intimate contact, the purifying-agent is passed from the upper part of the purifying vessel into the molten sulphur in the lower part.  As shown, the purifying-agent is introduced by a pipe V<1> into the first compartment E<1> of a cylindrical vessel divided by partitions into agitating chambers C<1>..C<4>, the molten sulphur being fed to the last compartment by a <PICT:0392980/III/1> pipe V<2>.  Purifying liquid is drawn from the top of each chamber C<1>..C<4> by pumps P<1>..P<4> and forced by pipes Q<1>..Q<4> into the molten sulphur filling the base of the vessel, connection between the chambers being allowed by upper and lower apertures A<1>..A<5> and B<1>..B<5>. Purified sulphur is delivered by a pipe V<3> to a filter and exhausted purifying-agent by a pipe V<4>.  Temperatures of 120-160 DEG  are employed and a pressure of 2\ba1/2\be atmospheres.  The tanks for the liquids may be so situated as to produce the necessary pressure and may serve as heating vessels.  The purifying-agent is employed in slight excess of an amount determined experimentally as necessary to remove the impurities.  The purifying-agent may be a metal compound having an alkaline reaction, e.g. milk of lime.
Patent GB-1333396-A (GB)
Title: Air conditioning systems
IPC: B64D13/00
Filed: 1971-07-16
Abstract: 1333396 Ventilating UNITED AIRCRAFT CORP 16 July 1971 [26 Oct 1970] 33434/71 Heading F4V  An air conditioning system comprises an enclosure having an inlet orifice and an outlet orifice, means to supply conditioned air to the enclosure through the inlet orifice, and means to produce a positive pressure in the enclosure, including a fan located in the outlet orifice which exhausts air at a rate lower than the minimum rate of the supply device. An air conditioning system 10, mounted in an aircraft 12, using the engine 13 as its pressure source, supplies conditioned air to compartment 14. To ensure a positive pressure in the compartment 14, a fan 40 is mounted in the compartment outlet orifice 48, and exhausts air at a rate lower than the minimum rate of supply of system 10. A pressure relief valve 50 is positioned in the wall of compartment 14 to ensure that the pressure in the compartment does not exceed a preselected limit.
Patent GB-1020156-A (GB)
Title: Improvements in or relating to magnet assemblies for loudspeakers
Inventor: PEARCE WALTER THOMAS
IPC: H04R9/02
Filed: 1963-08-23
Abstract: 1,020,156. Loud-speakers. PLESSEY U.K. Ltd. Aug. 17, 1964 [Aug. 23, 1963], No. 33456/63. Heading H4J. A loud-speaker magnet assembly includes a hollow cylindrical magnetic yoke 10 open at one end only, a permanent magnet 11 extending within the yoke 10 from the closed end towards the open end, the magnet 11 being provided with a skirted cap 12 of magnetic material which embraces the end of the magnet 11 adjacent the open end of the yoke and the skirt 12b of which has a peripheral outwardly-extending lip 12c which is engaged by a non-magnetic centring structure 16 retaining the magnet 11 centred within the yoke 10. The yoke 10 is of die-cast ferrous metal and the skirted cap 12 is of ferrous metal. The centring ring 16 is of brass and is of convoluted cross-section. It is held under axial compression with its outer edge held between a top-plate 14, forming an outer polepiece, and the lip of a recess 15 in the yoke 10. Alternatively, the centring ring 16 is a good sliding fit in the yoke 10. In an alternative construction (not shown), the cap 12 is formed by punching or drawing sheet metal, the magnet lip pole-piece corresponding to portion 12a being formed by an additional polepiece of ferrous metal which lies on the face of magnet lip portion 11a and is embraced by the cap. The additional polepiece may be disc-shaped or annular; in the latter construction the cap may have the greater part of its plane end face removed so as to leave an annular lip embracing the periphery of the additional polepiece.
Patent GB-486557-A (GB)
Title: Improvements in or relating to radio and like high frequency apparatus
IPC: H03B5/04
Filed: 1936-12-07
Abstract: 486,557. Two-part couplings; adjusting wireless apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Dec. 7, 1936, No. 33559. Convention date, Dec. 6, 1935. [Classes 37 and 38 (i)] [Also in Groups XL and XXXV] In a superheterodyne receiver preferably for ultra short waves stability of frequency is obtained by employing a double frequency change and employing oscillators whose temperature coefficients of frequency are of such magnitude and sign that the changes in the frequency of one oscillator is substantially compensated in the other. Fig. 1 shows a first oscillator 48 having a frequency determining circuit comprising a cast metal cylinder 90 with a central projection 94 capped by a disc 96 closed by a screwed disc 98. Frequency is adjusted by screw adjustment of the disc 98 a micrometer gauge 104 serving as a tuning indicator. The second intermediate frequency amplifier Fig. 3, is sharply tuned and provided with a tuning indicator 192. A triodepentode valve 204 is fed with the intermediate frequency and associated with a precision tuned circuit 194 which feeds the triode section biassed to operate as a rectifier. Fig. 9a shows the method of mounting the valves on a copper shield 93 having a sleeve 95 coaxial with the panel opening, by an insulating socket 99. The valve is supported by the screen and suppressor grid leads, 111, 115 fixed to spring clips 113, 117 and by the heater and cathode leads which also project in the same plane.
Patent GB-216907-A (GB)
Title: Improvements in advertising apparatus
IPC: G09F11/29
Filed: 1923-09-10
Abstract: 216,907. Colsell, J. H., and Parrish, S. T. Sept. 10, 1923. Reel and non-endless web apparatus.-In cabinets bearing stationary advertisements, calendars, &c. and a moving display band wound on and off two rollers one of which is provided with a spring stressed when the rollers are wound in one direction and returning the rollers when released, the band-operating spindle E slides through its roller and pulley wheel J to engage a spring-jaw friction grip K and hold the band G in any position. A belt L connects the rollers.
Patent GB-1304679-A (GB)
IPC: C05B5/00
Filed: 1971-07-16
Abstract: 1304679 Manufacturing granulated phosphatic fertilizers CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE 16 July 1971 [16 July 1970 22 Sept 1970] 33646/71 Heading C1B A method of manufacturing a granulated fertilizer comprises mixing calcium phosphate flour (e.g. slag flour) and water, the mixing comprising simultaneous crushing and grinding between two surfaces, one plane and the other cylindrical, grinding being obtained by sliding one of the surfaces with respect to the other, and the crushing and grinding being repeated. Optional ingredients are binder, amorphous material (soot, dust from sintering plants or waste fines from calcined dolomite) and/or potassium salt (e.g. KCl). A suitable apparatus comprises a vertical cylindrical tank 1 containing grinding rollers 4, 5 rotatably mounted on a horizontal shaft 6. An arm 8 extends from a vertical shaft 7 and is rigidly connected to 6 whereby said arm 8 swings shaft 6 about shaft 7 to cause rollers 4, 5 to roll and slide on the base 9 of the tank. Similar tanks 2 and 3, in series. allow for continuous operation.
Patent GB-424085-A (GB)
Title: An improved tool for straining wire and extracting wire fasteners
IPC: F16G11/12
Filed: 1933-12-01
Abstract: 424,085. Wire strainers. HARRISON, H. L., Crossways, Saltford, Somerset, and HARRISON, R. S., West Tytherton, Chippenham, Wiltshire. Dec. 1, 1933, No. 33746. [Class 45] A lever tool D is provided with a forked wedge-shaped end A which may be used for extracting staples or other fasteners and serves as a fulcrum when the tool is used for straining wire. The wire is gripped in a slot B by a pawl C which is serrated on both ends and may be swung in either direction about its pivot to close the grip so that the lever can operate in either direction. The gripping surface is eccentric to the pivot of the pawl to permit gripping wires of different gauge.
Patent GB-1271503-A (GB)
Title: Pyrolysis treatment of a method of and apparatus for filamentary material
Inventor: BLOOD-SMYTH FITZGERALD
IPC: D01F9/14
Filed: 1968-07-16
Abstract: 1,271,503. Reels. MORGANITE RESEARCH & DEVELOPMENT Ltd. 15 July, 1969 [16 July, 1968], No. 33772/68. Heading B8M. [Also in Division C1] A reel of refractory material, for use in the production of carbon fibres by pyrolysis of filamentary material, and specifically for accommodating contraction and expansion whilst maintaining tension of such material, comprises a base 10, a vertical spigot 11 on the base, cylindrical reel barrel segments 13, 14, 15 coaxially disposed about the spigot 11 and radially slidable on the base, and a weight 16 vertically slidable on the spigot and coacting with the barrel segments so that the weight produces a radially outward thrust on the barrel segments against the constriction of the coil of filamentary material wound thereon. The weight 16 is frusto-conical and rests on corresponding frustoconical surfaces 18 on the barrel segments. Flanges 19 are provided on the reel. In a preferred embodiment, the reel is made of graphite and comprises four barrel segments. In use, the reel is located on a jig by means of holes 20, 21 and the filamentary material is wound on the reel under tension. The reel is removed from the jig and placed in a furnace where the controlled pyrolysis treatment takes place. During the treatment, contractions and expansions of the filamentary material are accommodated by relative movement between the weight and the barrel segments.