baber/WOPTO huggingface dataset:
Patent GB-993857-A (GB)
Title: Control for limited slip differentials
IPC: F16H48/30
Filed: 1962-03-05
Abstract: 993,857. Differential gears. CATERPILLAR TRACTOR CO. March 5, 1962 [April 5, 1961], No. 8346/62. Heading F2D. [Also in Divisions G1 and H3] A system for controlling slip of a pair of wheels driven through differential gearing includes means for sensing the speed of each wheel and means operable automatically upon the speed of either wheel exceeding that of the other by more than an amount dependent upon the wheel speeds to actuate means for limiting differential action. Carrier member 12 is driven through ring gear 11 by bevel gear 18. Member 12 has a plurality of differential pinions journalled in a spider 30 and engaging with bevelled side gears 24, 26 on axle shafts 20, 22. A multiple disc clutch 32 has alternate discs secured to member 12 and the remaining discs secured to a hub 34 connected to gear 24. Hydraulic fluid is supplied through line 40 and fluid-conducting ring 41 to cavity 38 containing an annular piston 36. Proximity pick-ups 49, 50 adjacent toothed shaft portions 53, 54 provide output signals indicative of the shaft speeds. These signals are squared at 60, 61 and applied to integrating transistors 63 having feedsack resistors 64, 66 and capacitors 67. Capacitors 67 render the feedstack signal frequency-dependent, so that the output of each transistor is an inverse function of the speed of one of the shafts 20, 22. The outputs are applied through voltage doublers 71, 72, 73, 74 to a detector 75. When the difference between the outputs reaches a predetermined value a relay 76 actuates the solenoid 58 of valve 59. Capacitors may be provided between the base of each transistor and common line 68 to ensure linearity at high wheel speeds. Resistors 69 may be replaced by a pair of parallel-connected potentiometers to permit matching of the transistor outputs at low and high frequencies.
Patent GB-582545-A (GB)
Title: A self-priming liquid spring unit
IPC: B01D46/00
Filed: 1944-05-03
Abstract: 582,545. Shock-absorbers. DOWTY EQUIPMENT, Ltd., and SHAWBROOK, H. May 3, 1944, No. 8382. [Class 108 (iii)] [Also in Groups XXIX and XXXIII] A liquid spring unit, such as described in Specifications 559,581, 560,047, and 560,048, comprising a plunger operating in a chamber to compress resiliently liquid trapped in the chamber, is combined with a hydraulic system which communicates with the chamber through a non-return valve, such as described in Specification 577,637, operable automatically for recuperation of the liquid spring compression chamber on the occurrence of a lower pressure within the chamber than that which prevails in the hydraulic system. As shown, a liquid spring shock - absorber is combined with a jack for the retractable mounting of an aircraft landing element, the shockabsorber comprising a compression chamber 10, Fig. 1, completely filled with liquid in which is slidable a plunger 11 having a ported damping head 13 preferably giving a differential damping effect primarily to prevent excessive recoil. The jack cylinder 14 in which the plunger 15, with piston 17, is slidable, is mounted on the end of cylinder 10, a lock sleeve 18 being slidable on the piston between stops 19, 20 and normally pressed against stop 20 by a spring 21. A gland fitting at the other end of the cylinder 14 includes an end cap 26 from which a number of spring locking tongues 27, each having an enlarged head 28, extends into the annular chamber 25. Operation. Fig. 1 shows the jack fully collapsed and, to extend it, pressure fluid is supplied from a hydraulic system on the aircraft, under the control of a selector valve, through a connection 22 and along a hollow central tube 23 to the back of the piston 17. When the plunger 15 approaches its fully extended position, an enlargement 29 on the piston forces the heads 28 of the tongues 27 outwardly so that they engage the lock sleeve 18 and move it back against the spring 21 until the heads seat in a recess 30, after which the sleeve is moved by the spring to abut the stop 20 and lock the heads in position. To retract the jack, fluid is forced through a connection (not shown) beside the connection 22, into the plunger 15, through ports 24 and into the chamber 25 and forces back the lock sleeve 18 to break the lock, after which the piston 15 is retracted. Should the volume of liquid in the shock-absorber cylinder 10 be reduced, the loss is made good when fluid is forced through the tube 23 to extend the jack, pressure fluid passing through a non-return valve 32 at the end of the chamber 10. Mounting. As shown in Fig. 2, the tailwheel is carried by a fork fitting 37 which swivels for castoring action in a bracket 33 adapted to swing about a pivot 34 to move the wheel into the positions shown. Self-centring and/or shimmy damping means may be incorporated. Pin-joints 12, 16 at the ends of the combined jack and shock-absorber are connected respectively to the top of the tailwheel pillar housing 38 and the fuselage.
Patent GB-766988-A (GB)
Title: Improvements relating to valve chain circuits
Inventor: WHITE ERIC LAWRENCE CASLING
IPC: G11C19/20
Filed: 1953-03-27
Abstract: 766,988. Electronic counting-apparatus; pattern-movement stepping registers. ELECTRIC & MUSICAL INDUSTRIES, Ltd. March 12, 1954 [March 27, 1953], No. 8475/53. Class 106 (1). Fig. 1 shows a binary shifting register which comprises a chain of electronic discharge tubes V1, V2 ... V4 which are connected as described in Specification 766,987, so that only one tube is conducting at any given instant. The pattern of conducting is progressed along the chain by means of complementary switching pulses 1 and 2 which are derived from an oscillator C triggering a binary counter BC and a paraphase amplifier PA. If, for example, at a given instant tube V1 is alone conducting in the chain then at the next time when the bus-bars A and B interchange their potentials due to pulses 1 and 2, tube V1 is cut-off by the negative pulse applied to its control grid via diode D1. The rise of anode voltage of tube V1 limited by diode D2 is transmitted to the control grid of tube V2 so that tube V2 conducts, the succeeding pulse causes V2 to be cut-off and V3 to be rendered conducting so that the pattern of conductivity progresses along the chain. In a modification, Fig. 2 (not shown), the leak resistors R<SP>1</SP>1, R<SP>1</SP>2, &c. of Fig. 1, are replaced by limiter diodes which prevent capacitors C1, C2, &c. from discharging through their leak resistors and switching the succeeding tubes prematurely to the conducting state. Positive output pulses may be derived from the cathodes of tubes V1, V2, &c. or negative pulse from their anodes. In a further modification shown in Fig. 4, only one tube in the chain is conducting at any given instant, and this pattern is progressed along the chain by switching pulses 1 and 2. When one tube is switched off the rise in its anode voltage would tend to produce a fall in anode voltage of the succeeding tube on the chain, this however is prevented by diode limiters L1, L2, &c. Specification 738.-739 also is referred to.
Patent GB-384158-A (GB)
Title: Means for distant reproduction of angular positions
IPC: G08C19/48
Filed: 1932-03-22
Abstract: 384,158. Electric signalling systems. ALLM€NNA SVENSKA ELEKTRISKA AKTIEBOLAGET, Võsteras, Sweden. March 22, 1932, No. 8495. Convention date, Jan. 14. [Class 40 (i).] In an electric signalling system in which signals are transmitted by the movement of a singlephase winding in a polyphase field, the single-phase winding has a shortcircuited auxiliary winding substantially electrically perpendicular . to the main winding. As illustrated in Fig. 2, the transmitter A has a main winding a1 and a short-circuited auxiliary winding a2, which are supplied with single-phase current from E, and a stationary polyphase winding a3. Similar windings are provided at the receiver M. The rotor windings may be arranged in star formation as shown in Fig. 3, two of the windings being joined as illustrated. The arrangement is stated to give a considerable increase in the adjusting torque and therefore a corresponding reduction in error angle.
Patent GB-273023-A (GB)
Title: Improvements in feedwater regulators for steam generators and the like
IPC: F22D5/14
Filed: 1926-03-29
Abstract: 273,023. Marks, E. C. R., (Northern Equipment Co.). March 29, 1926. Thermally-actuated valves.-To prevent damage to the feed-valve 27, Fig. 1, of a thermostatic boiler-feed regulator after the valve has been closed the connection between the lever 20 of the thermostat and the valve lever 21 comprises a spring or other yielding means. A rod 22 connected to the lever 20 passes into a casing 23 connected to the lever 21 and has an end enlargement 24, Fig. 3, between which and the top of the casing is placed a compression spring 25. The spring allows the thermostat to contract and the rod 22 to move upwards after the valve has closed without excessive strain being placed on the valve members. When the valve is situated above the thermostat, the rod 22 is formed with a plunger which compresses a spring in a casing connected to the valve lever. A spring in tension may be used in place of a spring in compression. The valve lever may be formed in two parts 40, 41, Fig. 5, connected by a joint allowing the outer part to be lifted upon further upward movement of the connecting rod after closure of the valve.
Patent GB-346546-A (GB)
Title: Improvements in two stroke cycle internal combustion engines of the opposed piston type
IPC: F02B75/28
Filed: 1930-03-17
Abstract: 346,546. Two-stroke engines; piston pumps. FOWLER, C. H. and COOPER, H., Steam Plough & Locomotive Works, Leeds. March 17, 1930, No. 8523. [Class 7 (ii).] In an opposed piston engine each circular scavingeair pump is worked from the adjacent upper power piston c<1>, c<2>, c<3> ; the pump plungers a<1>, a2, a<3> work in liners b<1>, b2, b<3> with terminal air ports w<1>, these ports limiting the amount of air supplied by the pumps. The casing containing the driving gear is divided into two sections. The outside rods h<3> for the upper power pistons work in chambers y open to the atmosphere through a breather outlet; the undersides of the pump plungers work in these chambers the air from the ports w<1> being free to pass out by way of the breather. The upper sides of the pumps deliver through valves k<2> to closed chambers formed between the cheeks r, r<1> forming part of the crank shaft, these cheeks forming closures for the air chambers ; the air passes through the passages t to the inlet ports m. The connection between the pump delivery and the chambers between the cheeks r, r<6> is either by way of a pipe k<1> or through passages formed in the cylinder casing.
Patent GB-665155-A (GB)
Title: Improvements relating to combustion chambers for prime movers
Inventor: CLARKE JOHN STANLEY
IPC: F23R3/06
Filed: 1949-03-30
Abstract: 665,155. Generating combustion products under pressure. LUCAS, Ltd., J. March 7, 1950 [March 30, 1949], No. 8595/49. Class 51 (i). In an air-jacketed combustion chamber for use in jet-propulsion engines and other internalcombustion prime movers, the flame tube d has a plurality of shallow ferrules a or depressions in its peripheral wall, each ferrule or depression having in its base a hole b through which air can flow radially inwards from the jacket c to the interior of the flame tube, and having in its downstream side a slot or hole g through which air can enter the flame tube horizontally, thereby serving primarily to prevent local overheating.
Patent GB-231534-A (GB)
IPC: H01B11/14
Filed: 1925-03-31
Abstract: 231,534. Sattelberg, O. March 31, 1924, [Convention date]. Alloys.-A covering of ferro-silicon containing 8 per cent of silicon is applied to an electric conductor by fusing continuously in an electric are or other source of heat two rods or strips containing respectively 5 per cent and 11 per cent of silicon, and applying the molten product to the conductor.
Patent GB-388227-A (GB)
Title: Improvements in methods of and tubular apparatus for exchanging heat between fluids
IPC: F28F1/08
Filed: 1932-03-23
Abstract: 388,227. Tubes for heat exchange ; steam boiler smoke-tubes. KIRKE, P. St. G., Givons Manor, Leatherhead, Surrey. March 23, 1932, No. 8631. [Classes 64 (iii) and 123 (ii).] A heat-exchange tube, e.g. for steam boilers, is formed of a series of arcuate portions which are sufficiently short to provide a clear axial space throughout the length of the tube, as indicated by the lines 22, 23. Each arc lies in one plane and the planes of adjacent arcs are at a wide angle to each other, viz. from 90‹ to 180‹, so that the tube does not constitute a continuous spiral. The clear axial space permits a cleaning brush or scraper to be passed through, or an optical inspection device to be passed in. The ends of the tube may be expanded. In a preferred construction the curvature is such that the tangent at the point of inflexion m meets the opposite wall at the mid-point n of an arc. When a tube with all the arcs lying in one plane is used as a horizontal fire-tube, the plane of the arcs is perferably horizontal. Tables of experimental results concerning the heat transmission efficiency of tubes of various kinds are given in the Specification.
Patent GB-508890-A (GB)
Title: Improvements in or relating to universal joints
IPC: F16C11/06
Filed: 1938-03-21
Abstract: 508,890. Universal joints. AUTOMOTIVE PRODUCTS CO., Ltd., and BROCK, D. T. March 21, 1938, No. 8679. [Class 65 (ii)] A ball joint comprising a housing 10, a stud 14 having a part spherical surface engaging a corresponding surface 16 formed within the housing and a spring-urged thrust member 19, has a spherical ball 18 located between the stud and thrust member. The ball may be accommodated in a recess formed in the stud or thrust member which may be deep enough to cover more than half the ball. The top lip of the recess may be burred over to retain the ball. The stud may be fitted with a relatively rotatable bush 15. In a modification, Fig. 4, the part-spherical surface 29 is arranged to extend on both sides of a full diametral plane 30 so that when the stud is at its maximum obliquity the thrust applied to the socket in a direction 31 acts through the centre of the ball 18 and does not tend to displace the stud. The joint may be lubricated through an opening 26 and dust may be excluded by a cover 25.
Patent GB-933547-A (GB)
Title: Overload circuit breaker for high currents
IPC: H01H73/18
Filed: 1961-03-09
Abstract: 933,547. Automatic circuit-breakers. ELLENBERGER & POENSGEN G.m.b.H. March 9, 1961 [March 23, 1960], No. 8745/61. Class 38 (5). The circuit-breaker of Specification 828,754 is arranged to have higher current carrying and rupturing capacities by providing a flexible connection 26<SP>1</SP> between the bimetallic strip 23 and the moving contact member 9 so that arcing is confined to the contacts 7.8. In addition, the casing interior walls are ribbed and recessed to prevent the deposition of particles of contact material on the walls from forming conducting paths between the contacts and other currentcarrying metallic parts. The casing walls may be provided with vents and the contacts 7, 8 may be made of a tungsten silver alloy, e.g. 30% W, 30% WC and 40% Ag.
Patent GB-727038-A (GB)
Title: A process for the manufacture of magnesium
IPC: C22B26/22
Filed: 1952-04-04
Abstract: 727,038. Producing magnesium. SOBERMA, SOC. DE BREVETS D'ETUDES ET DE RECHERCHES POUR LE MAGNESIUM SOC. ANON., [formerly SOC. FONDERIE DE BEAUFORT]. April 4, 1952 [April 6, 1951], No. 8748/52. Class 82 (1). A process for producing magnesium comprises contacting a pulverulent mixture, of magnesiacontaining material and a reducing agent giving non-volatile oxidation products, with the surface of a molten slag, the weight of the mixture and of the slag being in predetermined proportions so as to cause partial solidification of the upper part of the slag without excessive slowing down of the reactions. The reducing agent is preferably an alloy containing iron and. silicon or an alloy containing aluminium and silicon. The slag is principally, or sometimes even wholly, composed of oxides carried by the raw material or formed during the reduction, and has a melting point of about 1350‹ C. The reaction temperature should be more than 1300‹ C. and the molten slag kept at 1500- 1650‹ C. by electrodes immersed therein. The ratio should be Œ 30 per cent of T-F/T where T is the slag temperature before the material addition and F is the melting point of the slag. As shown, a layer of slag D is formed from a previous reduction, or is placed, within a furnace F having graphite heating'electrodes E and a cylindrical condensation chamber with a water-cooled condenser C. The slag is heated by the electrodes to 1500‹ C. and the pressure within the furnace is reduced to 25 mms. of mercury, after which the valve H in the vacuum line is closed. A charge of 66 per cent burnt dolomite, 18 per cent silicoaluminium and 16 per cent magnesia is then dropped on to the slag from a hopper T, this causing the slag temperature to drop initially to 1350‹ C., and the magnesium produced by the reduction is condensed at C and collects in a pot M. Further charges are fed into the furnace until it is filled with slag when the vacuum is broken, excess slag is poured off through an outlet S and the pot M is removed.'
Patent GB-116705-A (GB)
Title: Improvements in Locomotive Boiler Fire Boxes.
Inventor: DEFFNER ERNST
IPC: F22B13/12
Filed: 1918-05-27
Abstract: 116,705. Deffner, E. March 1, 1917, [Convention date]. Fire-boxes. - In a locomotive fire-box having water-tube walls connected to a tubular foundation frame p, the back transverse member d of the frame is placed in communication with the body of the boiler by a hollow wall extending over the whole width of the fire-box. The hollow wall is formed by the fire-box tube-plate a and a plate b riveted to the boiler barrel.
Patent GB-590031-A (GB)
Title: Copying device for manual writing in bookkeeping systems or the like
IPC: B41L3/02
Filed: 1945-04-10
Abstract: 590,031. Manifolding-appliances. SODERLUND, B. T. April 10, 1945, No. 8822. [Class 16] At least one double-faced carbon sheet and at least one translucent record sheet M overlying the carbon sheet are held at opposite edges by clips K, L mounted on a supporting-plate E to which a rule F is fixed by pins G, H so that the rule is sufficiently spaced from the plate to permit the lower leaf of a folded card to be inserted thereunder, whereby a copy of matter written on the top leaf is simultaneously provided on the underside of the record sheet and on the inside of the lower leaf ; the rule F limits the insertion of the card, which is inserted from the side so that its upper leaf is over the sheet M and the lower leaf is under the carbon sheet. The clips K, L are hinged to bars A, B hinged at C, D to the plate E.
Patent GB-478470-A (GB)
Title: Improvements in or relating to radio directing and direction finding systems
IPC: G01S1/02
Filed: 1937-03-25
Abstract: 478,470. Directive wireless systems. STANDARD TELEPHONES & CABLES, Ltd. March 25, 1937, No. 8888. Convention date, April 9, 1936. [Class 40 (v)] A directive aerial assembly comprises a central aerial dipole 1, a reflecting dipole 13 arranged “ wave length behind the aerial 1, a directing dipole 14 arranged ¢ wave length in front of the aerial 1, and one side deflecting dipole or a pair of keyed side deflecting dipoles 2, 6. A suitable source 15 is arranged in line with the aerial assembly and the leads 16, 17 feeding the two dipoles 1, 14 are arranged along this line and are crossed at intervals to diminish parasitic currents. The assembly gives a wave distribution of the form shown in Fig. 6, and if the assembly is mounted pointing upwards, the dipoles being horizontal, a moving body can be guided by the trajectory 17 of constant field strength and would arrive tangentially to the ground.
Patent GB-1427799-A (GB)
Title: Margin angle control arrangements for electric power converters
IPC: G05F1/56
Filed: 1973-02-23
Abstract: 1427799 Automatic gain control GENERAL ELECTRIC CO 23 Feb 1973 [25 Feb 1972] 8995/73 Addition to 1365817 Heading H4R [Also in Division H2] In a power converter, see Division H2, the gain of an amplifier is set to three discrete levels depending on the relationship between the input signal and a reference. As shown in Fig. 4, connections 153 and 154 are respectively connected to the output and input of an operational amplifier in the control loop of a HVDC power transmission system. The gain of the amplifier is set to three values by the parallel arrangement of feedback resistor 161, with 162 and 163, in dependence of the relative value of the input signal - V #MIN  relative to V REF . When the negative signal - V #MIN  is sufficiently negative relative to V REF , point 167 will be negative, so that transistor 165 is on and 166 off hence both the bi-directional switching transistors Q5, Q6 will be off so that resistor 161 sets the highest gain. When the error voltage is approximately zero, transistors 165 and 166 are both off so that transistors Q5 and Q6 are both on giving an effective feed back resistor formed by resistors 161, 162 and 163 in parallel and thus minimum gain. When the signal - V #MIN  is positive with respect to V REF , transistor 166 is on and 165 is off so that Q5 is on and Q6 is off hence the gain is controlled by resistors 161 and 162 giving an intermediate gain value.
Patent GB-784493-A (GB)
Title: Guiding apparatus for the mandrel of an extrusion press
IPC: B21C25/04
Filed: 1955-03-28
Abstract: 784,493. Extruding. BABCOCK & WILCOX CO. March 28, 1955 [April 16, 1954], No. 9001/55. Class 83 (4). Mandrel guiding means 40, Fig. 1, for an extrusion press using tubular metal billets 30 provided internally with a layer of lubricant 36, comprises narrow runners 50 extending radially outwardly of the mandrel 18 and adapted to engage the internal surface of the billet during the passage therethrough of the mandrel without substantially removing the lubricant therefrom. The runners are pivotally mounted in radial slots 42 in the end of a member 48, Fig. 3, screwed on a projection 12 of the mandrel. Co-operating surfaces 43, 57 limit the outward movement of the runners which have double bevelled edges 55, 56. During extrusion of the billet, the runners are collapsed forwardly, Fig. 4 (not shown), by the end of the tubular extruded product. In another embodiment, Fig. 5 (not shown), the runners are of triangular shape. In a further embodiment, Fig. 8, the runners 70 are rigid with a body member 451 loosely mounted on a pin 12<SP>1</SP> on the end of the mandrel 18<SP>1</SP>; the body member and runners are subsequently detached from the mandrel by engagement with the extruded product 38<SP>1</SP>. The billet 30, Fig. 1, having been previously pierced and in the case of steel, heated to 2300‹ F., is provided internally and externally with lubricant layers 36, 31 formed by powdered glass applied as described in Specification 784,492 and one or more cylindrical plugs of glass fibre are placed in the billet chamber 16 before insertion of a pierced billet so as to be disposed between the billet and extrusion die 25. The latter is mounted in a frusto-conical ring 21 applied against the end of the container liner 14. After extrusion the container 15 is moved from the die and the extruded product severed from the discard which is subsequently removed from the container by the ram 17 which carries a dummy block 11. Specifications 607,285 and 663,357 also are referred to.