baber/WOPTO huggingface dataset:
Patent GB-861735-A (GB)
Title: Improvements in or relating to mono-fuel self contained power unit
Inventor: TROWBRIDGE DAVID ROY
IPC: F23R3/28
Filed: 1957-06-04
Abstract: 861,735. Combustion product plant. PLESSEY CO. Ltd. June 4, 1958, [June 4, 1957], No. 17701/57. Class 7(1). [Also in Group XXVI] A mono fuel power unit comprises a fuel tank container 1 which is divided into two chambers 3 and 2 by means of a flexible diaphragm 4 or a piston, monofuel contained in the chamber 3 being expelled therefrom by means of gas under pressure supplied to the chamber 2, the gas being tapped from the exhaust gases of the prime mover 13 which in the embodiment shown is a gas turbine. Fuel is supplied from the monofuel chamber 3 through duct 5 to fuel pump 6, thence to control valve 8 and combustion or decomposition chamber 11. The control valve 8 which may be as described in Specification 861,734 is also connected to the fuel chamber 3 by means of duct 9. Combustion products from the chamber 11 pass to the turbine 13 and exhaust gases therefrom discharge through the duct 14. The pressure of the exhaust gases is tapped off from the duct 14 and applied to the chamber 2 through the pipe 16. The inlet to the pipe 16 may be directed upstream so that the kinetic and static pressure of the gases is utilized or the inlet may be parallel to the flow of gases so that the static pressure only is utilized. A restriction 19 is disposed in the exhaust pipe so as to ensure a sufficiently high pressure of the exhaust gases. The fuel pump 6 is driven by the turbine 13 through connection 18. The exhaust gases passing through pipe 16 may be cooled for example by means of cooling fins or by making the pipe of considerable length.
Patent GB-745170-A (GB)
Title: Improvements in and relating to knives
IPC: B26B3/03
Filed: 1953-06-25
Abstract: 745,170. Knives. EMBER, M. R. June 25, 1953 [Oct. 17, 1952], No. 17705/53. Class 30. A knife comprises a handle, a blade, and a guide located below the cutting edge of the blade and mounted on the lower surface of the handle so as to be displaceable perpendicularly to the plane of the blade. As shown, a wedge-shaped groove 4 in the end member 14 of the guide 5 slidably engages a complementary rib on the lower surface of the handle 1 so that on release of a locking screw 6, which passes through a slot 7 in the guide member and engages a threaded socket in the handle, the distance between the guide face 2 and the blade 9, and hence the thickness of the slide cut, can be varied according to a scale provided on the handle and used with reference to the cutting edge or to an index mark on the handle. In a modification the handle is secured to the guide and the blade is slidably adjusted.
Patent GB-798190-A (GB)
Title: Improvements in and relating to composite refractory bodies
IPC: C22C32/00
Filed: 1955-06-20
Abstract: Heat resistant articles of high strength and high resistance to impact and creep at high temperatures are formed of 40-80 per cent by volume of a refractory carbide and 20-60 per cent by volume of a matrix-forming metal which comprises at least 40 per cent by weight of one or more of iron, nickel and cobalt and may contain up to 30 per cent each and up to 40 per cent in total of one or more of chromium, molybdenum and tungsten.  One or more of niobium, tantalum and vanadium may be present in the matrix-forming metal up to 8 per cent in total.  Other alloying elements such as titanium, zirconium and aluminium may be included.  The material has a microstructure comprising the matrix-forming metal enriched in dissolved carbide and having dispersed therethrough particles of precipitated carbide, with isolated grains and grain aggregates having a rounded shape.  Such a microstructure is produced by infiltrating molten matrix-forming metal into a porous refractory carbide skeleton and then further heating the composite body at a temperature above the melting point of the matrix forming metal to saturate the said metal with dissolved carbide.  The refractory carbide may be mainly titanium carbide or mainly tungsten carbide containing up to 30 per cent of other carbides such as those of titanium and tantalum or up to 20 per cent of molybdenum, niobium, chromium or vanadium carbides.  In an example titanium carbide ground to pass a 140 mesh sieve and is either hot pressed or is cold pressed and presintered under a pressure of less than 2,500 microns of mercury at 1100-1300 DEG C. for a time equivalent to 10 minutes for each cubic inch of the body.  It is then sintered at a temperature 50-250 DEG C. above the temperature to be used for the subsequent infiltration under a pressure of reducing or inert gas varying from 1,000 microns of mercury to a final pressure of 50 or 10 microns of mercury.  The body is then contacted with metal at a temperature of 25-250 DEG C. above the liquidus point of the metal in a non-oxidizing atmosphere at a pressure less than 2,500 microns of mercury varying down to a final pressure of 10 microns of mercury.  Further heating at a temperature above the liquidus of the infiltrant metal is given either by continuing heating at the infiltrant temperature or after cooling and shaping the body, to attain equilibrium between the carbide and infiltrant metal. Specification 744,024 [Group XXII] is referred to.
Patent GB-345166-A (GB)
Title: Anti-dazzle device for vehicle head-lamps
IPC: B60Q1/14
Filed: 1930-06-10
Abstract: 345,166. Vehicle lamps. ZWICKY, J., 46, Herzogstrasse, Aarau, Switzerland. June 10, 1930, No. 17833. Convention date, June 8, 1929. [Class 75 (iv).] Lantern screen.-In a vehicle head-lamp having an adjustable cylinder 15 which is pushed over the lamp during dimming, the cylinder consists of a transparent artificial resin having an internal and external protective coating 16 of transparent incombustible material, e.g. mica. The resin is preferably a form of cellulose acetate, for instance the substance known under the registered Trade Mark " Cellon." A rod 7, having a pin 11 moving in a slot in the sleeve 9 and bearing on a spring 12, actuates the ring 6 which carries the cylinder 15. An annular reflector 18 remains inside the cylinder during dimming.
Patent GB-563116-A (GB)
Title: Improvements in coin or check freed amusement apparatus
IPC: G07F17/38
Filed: 1942-12-16
Abstract: 563,116. Coin-freed amusement apparatus. BRADLEY, L. C. Dec. 16, 1942, No. 17853. [Class 27] In coin-freed amusement apparatus of the Tivoli billiards or like type in which balls which enter a " Lost opening are prevented from returning into play by a blocking member which is released by the insertion of another coin, the blocking member is a freely-suspended lever 20 carrying a stop part 22 normally maintained in a position to block a ball 5 by a control lever 27, 28 having one end 32 extending into a coin shoot 31 so that as a coin passes down the shoot the control lever is rocked and releases the blocking lever 20, thus allowing the ball 5 to return to a playing position. In the construction shown, the arm 27 of the control lever is weighted, so that as soon as the coin has passed down the shoot the lever returns to its normal position and the arm 27 acts on a cam 29 on the back of the blocking lever 20 to lock the part 22 across the passage 18 down which a ball 5 can come. The lever 20 is hung loosely from two screws 21 so that it swings at right angles to a back board 3 of the apparatus. The ball 5 is projected by means of a lever 8 and hammer 6 along a spiral track 4 and falls either between pins 10 defining " Win " openings or down gaps 13 forming the Lost '' openings between the end pins and blocks 12. If a ball falls between the pins it passes into a trough 15 and down a shoot 16 and through a gap 19 in the track 4 into play again. The blocking lever 20 is forked at its lower end and formed with two projections 22 to block both the .passages leading from the gaps 13. In a modification, Fig. 6 (not shown), the blocking member comprises two loosely pivoted arms each having a pin adapted to be engaged by a corresponding notch in the control lever to lock the blocking arms in place.
Patent GB-951711-A (GB)
Title: Heat transfer system
IPC: F24F5/00
Filed: 1962-05-09
Abstract: 951,711. Automatic control of temperature and flow. UNITED AIRCRAFT PRODUCTS Inc. May 9, 1962 [May 10,1961], No.17907/62. Heading G3R. In an air-borne cooling system, changing conditions of ram air used to cool heat producing means, e.g. electronic equipment, are sensed with a view to maintaining constant conditions of temperature and flow in the cooling air. As shown, air enters a duct 10, passes through a heat exchanger 11 and emerges from duct section 13, under the control of a valve 14, to cool equipment which is not illustrated. An expendable refrigerant, e.g. liquid ammonia, passes separately through the heat exchanger 11 from a reservoir 17 by way of pipes 21, 22, 23 and under the control of an electromagnetic valve 27, 28. A probe 31, responsive to the temperature of the cooling air, is connected to an electronic circuit 37 which controls the operation of valve 27, 28 and a probe 29 responsive to the rate of flow of the cooling air is connected to an electronic circuit 33 which controls a motor 16 operating the valve 14. The circuits 33, 37 may be of the type including a self-balancing Wheatstone Bridge. In operation, mass air flow is maintained constant by the valve 14 by the control circuit 33 acting on the motor 16 under the influence of probe 29; at the same time, any increase in temperature of the cooling air is sensed by the probe 31 whereby the control circuit 37 causes valve 27, 28 to open and close with a frequency calculated to produce whatever rate of cooling is necessary in the heat exchanger 11 to bring the supplied air to a selected temperature. The supply line 41, 42 to the control circuits 33 and 37 is under the control of a thermally responsive switch 43 and an altitude switch 44 so that the system is operative only when the air entering the duct 10 is at a predetermined high temperature or when there is a predetermined low ambient pressure.
Patent GB-518470-A (GB)
Title: Improvements in or relating to wrapping materials
IPC: B65B25/06
Filed: 1938-06-16
Abstract: 518,470. Moulding by dipping. POIX, H. M. J. T. de. June 16, 1938, No. 17953. Drawings to Specification. [Class 87 (ii)] [Also in Groups VI and XVII] For preserving foodstuffs, e.g. meat, an envelope or bag, of a flexible elastic material which is substantially impervious to air and moisture, is distended to an extent sufficient to produce temporary inhibition of its elastic qualities, the foodstuff is placed therein, the envelope is caused to. contract into firm contact with the foodstuff and either before or after the contraction the envelope is sealed. After shrinkage of the envelope, the covered foodstuff may be frozen prior to cold storage, and the temperature of the cold storage or freezing may be such as to convert the envelope into a substantially inelastic state. The envelope is made by dipping a former, shaped to correspond with the article being packed but smaller, e.g. ¢ - 1/6 of the linear dimensions thereof, in a solution of rubber, or concentrated latex,. drying the coating either on the former or elsewhere, and dusting with a non-toxic, anti-sticking compound, e.g. starch. The envelopes may be supplied in this state to the packer, or they may be enlarged, by distending, e.g. to 100-600 per cent. elongation, with compressed air, until the article, such as a carcase, may easily be placed therein. The envelope is then closed on to the carcase as by applying vacuum or external pressure and a short period of heating to a temperature of 140‹F. to shrink the envelope and eliminate the wrinkles and folds produced by the vacuum or pressure. The vacuum or pressure step may' be omitted. Suitable dipping bath compositions are 5 per cent. of pale crepe rubber in benzol and, if desired, one-half per cent. of alcohol; natural rubber dispersion (latex); or an artificial dispersion of natural rubber formed by grinding up natural crepe rubber and dispersing it in water, e.g. 86 parts by weight of crepe rubber, 14 parts of ammonium stearate and 200 parts of water. A low degree of vulcanization may be imparted to the envelope.
Patent GB-225811-A (GB)
Title: Improvements in or relating to propellers
IPC: B64C11/16
Filed: 1924-07-29
Abstract: 225,811. Soc. Anon. Nieuport-Astra. Dec. 4, 1923, [Convention date]. Screw propellers.-A screw propeller is manufactured from sheet iron plates bent into cylindrical form or of a form such as an ellipse or parabola generated by a straight line moving parallel to itself on a given directrix. A twobladed propeller is made in one piece, Fig. 1, with a main cylindrical portion and flat edges, the leading and trailing edges being cut so that at sections, as in Figs. 2 and 3, the angles of the sections are a, b respectively. The thickness of the sheet may be varied to taper off from root to tip.
Patent GB-835262-A (GB)
Title: Method and means for continuously unwinding at a high speed electric and the like wires wound over spools
Inventor: GAZET MARIUS BERNARD
IPC: B21C47/20
Filed: 1956-06-12
Abstract: 835,262. Unwinding wires. ETABLISSEMENTS G. DECOMBE. June 12, 1956, No. 18142/56. Class 120(2) [Also in Group XXII] Apparatus for successively unwinding at high speed and without interruption wire wound on flanged spools 3, 5 comprises support means, preferably stub shafts 1a. 1b, adapted to support the spools 3, 5 and maintain them stationary at locations on opposite sides of a plane in which is a guide 6 coaxial with the spools, and casing means 9 surrounding the spools 3, 5 to limit ballooning of the wire and having an opening 10 or openings to enable the trailing end of wire on one spool and the leading end of wire on another spool to be connected together externally of the casing means 9, so that on completion of unwinding from one spool the wire on the next spool can be unwound in continuation of the wire on the first spool. A loose disc 4 on each stub shaft facilitates unwinding. The casing means may consist of two casings each surrounding a spool, and joined by an element slotted to join the openings in the separate casings. The separate casings may be coaxial or inclined at an angle to each other.
Patent GB-409527-A (GB)
Title: Improvements relating to the centrifugal moulding of concrete bodies
IPC: B28B21/34
Filed: 1933-06-26
Abstract: 409,527. Moulding concrete pipes &c. in centrifugal machines. HUME, E. S., 51, Colin Street, Perth, and HUME PIPE CO. (AUSTRALIA), Ltd., Kinnear House, King Street, Melbourne, both in Australia. June 26, 1933, No. 18170. [Class 87 (ii).] Bodies, such as pipes, are moulded by subjecting a concrete mixture in a horizontal mould simultaneously not only to centrifugal force but also to a pronounced jolting by projecting the rotating mould intermittently and abruptly upwards from its normal position and allowing it to return forcibly thereto. A number of smooth-faced runner-wheels 6 are mounted in bearings 3 on a framework 2. Additional runner-wheels 6<a> are mounted on a shaft 9 which runs in bearings carried by a vertically movable bed-plate 17 controlled by bolts 18. The shaft 9 also carries jolting- wheels 11 which have a series of segmental projections 11a which contact with frictionwheels 13 to produce the desired jolting action. The shaft 12 of the wheels 13 is mounted in eccentric bearings 14 which may be rotated by the worm gear 16 to move the wheels 13 out of contact with the wheels 11. The tubular moulds 7 rest on the wheels 6, 6a and are driven frictionally by the wheels 6. A series of shafts 9 may be used and the corresponding bearings 14 may be interconnected by levers so that all the shafts 12 are raised or lowered simultaneously. In a modification, Fig. 5, the jolting-wheels 11 may be formed with radial pins 11c which project a distance regulated by a conical screw 21 and springs 11d. The jolting-wheels 11 may engage the moulds 7 directly. The moulds may be first run at a slow speed under combined centrifugal and jolting action and then at a higher speed under centrifugal action alone. A semi-dry concrete mixture may be employed, for example, a mixture composed of 6¢ parts by weight of aggregate, one part of Portland cement, and water comprising 8¢ per cent by weight of the mixture. The invention is also stated to be applicable to the lining of metal pipes with concrete. Specification 187,587, [Class 87 (ii)], is referred to.
Patent GB-738906-A (GB)
Title: Improvements in or relating to the regulation of plunger pumps
IPC: F04B49/24
Filed: 1953-06-30
Abstract: 738,906. Reciprocating pumps. SOC. D'INVENTIONS AERONAUTIQUES ET MECANIQUES S.I.A.M. June 30, 1953 [Aug. 14, 1952], No. 18170/53. Class 102 (1). In a reciprocating pump, a piston 12 controls the inlet port 13a and delivers through a valve 16 the amount being controlled by varying the amount permitted to flow through the axial bore 111 and groove 113, in the piston, to the spill ports 110 in the cylinder. The number of ports 110 that are open is controlled by a sleeve 19 adjusted by a spring-loaded member subjected to the pressure beyond the delivery valve. In Fig. 2 is shown a multi-cylinder pump in which the pistons are actuated by a swash plate 35 ; a second plate 45 is mounted on a head 41 and loaded by a spring 44. The regulating sleeves 19 are actuated by a flange 50 on a cylinder 49, loaded by a spring 51 and subjected to the delivery pressure through passages 46, 47, 48.
Patent GB-582875-A (GB)
Title: Improvements relating to sub-press mechanism for use with power presses
IPC: B21D24/08
Filed: 1944-09-23
Abstract: 582,875. Cupping. EDNEY, G. H., BOOTH, M. B., and BOOTH, E. Sept. 23, 1944, No. 18203. [Class 83 (iv)] A sub-press for use with a power press comprises a fixed tool plate, a movable tool plate guided with respect to the fixed tool plate and a pressure plate associated with the movable tool plate and actuated thereby through controllable hydraulic means. The fixed tool plate 12 is adapted to be bolted to the base of a power press and carries a die 13 and vertical pillars 20 by which is guided the movable tool plate 17 carrying a tool 18 and a pressure plate 25 supported by members 23. The members 23 form pistons operating within bores 22 formed in the plate 17 and communicating by way of passages 27 with the bores 28 in which operate the pillars 20, each of which has a central bore communicating with a common passage 31 adapted to be connected to a reservoir by way of a non-return valve 33. In operation, the plate 17 is engaged and moved downwards by the ram of a power press and the movement of the cylindrical pillars 20 within the cylinders 28 causes a flow of fluid into the cylinders 22 so that the plate 25 is pressed on to the edges of the work 14 with a pressure determined by the setting of a relief valve 35. In a modified form, the pressure plate is supported by cylinders which receive plungers depending from the upper movable plate. The common passage 31 is in the movable plate and is connected by a flexible hose to the reservoir.
Patent GB-491469-A (GB)
Title: Improvements in and relating to alternating current motors
IPC: H02K7/102
Filed: 1937-07-01
Abstract: 491,469. Electric motors. BRITISH THOMSON-HOUSTON CO., Ltd. July 1, 1937, No. 18327. Convention date, July 1, 1936. [Class 35] In a three-phase squirrel-cage motor of the type in which a braking-member sliding on the shaft is disengaged by the magnetic action of the rotor core when the current is switched on the rotor core is furnished with a hollow conical portion with which a corresponding portion of the braking member engages. In the arrangement shown the sliding member is provided with a braking surface p engaging a fixed member g and a conical part f entering and engaging with an extension h on the rotor to complete the magnetic circuit therethrough. The extension h of the rotor is separated from the main portion a by a laminated non-magnetic portion d and an air-gap l separates the stator into two corresponding portions; both the rotor and stator windings pass through the extended portion of the rotor and stator respectively.
Patent GB-452407-A (GB)
Title: Improvements in and relating to aircraft with autorotative wings
IPC: B64C27/02
Filed: 1935-01-16
Abstract: 452,407. Aircraft with rotary-wing systems. LA CIERVA, J. DE, Bush House, Aldwych, London. Jan. 16, 1935, No. 18394/36. Divided out of 452,365. [Class 4] In aircraft having an auto rotative sustaining rotor, means, including a clutch, for initiating rotation of the rotor and automatic means for varying the mean rotor-blade pitch-angle responsive to any or all of the forces acting on the blades, the rotor-blades are articulated to the hub and the rotor includes means automatically responsive to blade displacement relative to the hub in the plane of rotation in the leading direction for decreasing the pitch angle, and means operative while the blades are being positively driven to maintain the pitch angle at a predetermined value less than that utilized in flight. As shown, each blade can flap about an axis 35 whilst rocking about axes # # and alpha alpha results, respectively, when the blades lead in a decrease and increase in blade pitch and conversely when the blades lag. In the construction shown, pronounced lagging displacements of the blades as occur, e.g. when a driving torque is applied are associated with progressive decrease and leading displacements which occur, e.g. when a brake is applied to the rotor hub also result in a progressive decrease in pitch. This result is obtained by the disposition of stops 47, 48b, 49, and two further stops which are not shown in Fig. 1, which limit movement about the axes # #, alpha alpha, and a suitable choice of the aerodynamic and mass characteristics of the rotor blades. If the blades are constructed so that their aerodynamic centres of pressure are in advance of their mass centres then when the rotor is rotating leading displacements will take place about the alpha axis only and lagging displacements about the # axis only. Specification 420,322 is referred to, and Specification 452,364 also is referred to in the Provisional Specification.
Patent GB-1522422-A (GB)
Title: Feed mechanism for sewing machines
IPC: D05B27/02
Filed: 1976-05-05
Abstract: 1522422 Sewing machine feed dog mechanism SINGER CO 5 May 1976 18460/76 Heading D1G A sewing machine differential feed mechanism comprises a feed dog 20, feed advance means comprising a driven shaft 40, first eccentric means 42 connected thereto and to a feed advance shaft 48 to oscillate the latter, feed dog support means 28, 32 link 96 connecting that means to the feed advance shaft 48 feed dog lift means comprising a second eccentric 108 connected to the shaft 40 and to the dog support 32 at a connection 102 common with that of the link 96. A feed bar 104 extending from a crank 110 on a rock shaft 74 is also connected to the common connection 102. A second feed dog 22 is provided receiving advance and lift motion from similar mechanism is provided to give a differential feed mechanism, the feed advance amplitude in each case being selected by individual variation of the position of knobs or levers connected to separate shafts 80, 87 connected by respective linkages 82, 84, 86 and 88, 90, 92 to blocks 58 slidably mounted in arcuate levers 52, 98 mounted on the advance shaft 48. Rods 28, 30 are adjustably mounted in the support members 32, 34 to allow adjustment of the dogs. Lubrication. Dog support rods 28, 30 pass through the wall 64 of an oil reservoir 66 in the casing 10 and are there provided with bellows seals 68.