baber/WOPTO huggingface dataset:
Patent GB-470985-A (GB)
Title: Improvements in filters
IPC: B01D35/14
Filed: 1936-03-03
Abstract: 470,985. Filters. ZWICKY, J. March 3, 1936, No. 6451. [Class 46] A filter element 1 in a casing 3 with inlet 4 and outlet 5 is cleansed by upward movement of a piston 8 in a cylinder 7, the piston forcing filtrate back through the element and driving the liquid so forced back and the impurities detached from the element into the lower end of the cylinder through ports 40 in a valve plug 15. By rotation of the valve plug communication between the lower end of the cylinder and the space outside the element 1 is cut off and a port 41 at the lower end of the plug is opened, so that, when the piston is forced down, the dirty liquid and impurities are discharged from the cylinder through an outlet 18. As the element becomes clogged during filtration pressure of the liquid raises the piston slightly and upward movement of the handle 10 or an electrical or other visible or audible signal indicates that cleaning is necessary. Fig. 2 shows a modified form of valve for discharge of impurities. When the valve 20 is raised to open the discharge outlet 18, a skirt 21 on the valve contacts with the bottom 11 of the cylinder 7. As shown in Fig. 5, communication between the outside of the filter element and the lower end of the cylinder 7 is through an upwardly moving one-way valve 24 and the outlet 18 is controlled by a spring-pressed ball valve 26. Fig. 6 shows a further modification in which a light spring 27 holds a valve 28 upon its seat, but during normal working an eccentric 29 is turned so that the pressure of a stronger spring 31 acts upon the valve. Specifications 373,717 and 388,153 are referred to.
Patent GB-589582-A (GB)
Title: Improvements in or relating to the control of paint-spraying apparatus
IPC: B05B12/16
Filed: 1945-03-15
Abstract: <PICT:0589582/III/1> <PICT:0589582/III/2> A shield is located in the path of a spray gun, means being provided whereby, on one of a series of articles which it is desired to paint being presented to the spray gun, the shield is withdrawn; such means, however, being inoperative if one of such articles should not be present.  The apparatus is designed mainly in connection with the apparatus for coating mica plates as described in Specification 589,581 in which the plates are successively conveyed on to a suction nozzle and held by the nozzle while being sprayed.  This invention ensures that, if the nozzle fails to pick up a plate, the spray will be intercepted by the shield and so will not foul the suction nozzle.  Referring to Fig. 1, with a plate over the mouth of the suction nozzle connected to tube 10, the suction pressure in the cylinder to tube 10, the suction pressure in the cylinder 9 draws the piston 8 against the action of the spring 11, whereby the shield 2 is withdrawn from the position covering the nozzle 1 of the spray gun.  When no plate is held against the suction nozzle, suction in the cylinder 9 ceases and the spring 11 operates to restore the shield 2 to its covering position.  Another form of the invention is illustrated in Fig. 2.  On rotation of the cam 15, the piston 12 is moved to the right, and with the suction nozzle which is attached to tube 14 covered by a plate, suction is produced in the left-hand end of the cylinder 13 which will thus rock about its pivot 22 with the result that the shield 30 will be moved from its covering position.  With the plate absent, insufficient pressure is induced in the cylinder 13 and the spring 24 will maintain the cylinder in contact with the stop 23 so that the nozzle of the spray gun 31 remains covered.  On completion of the stroke of the piston 12, a port 32 in the cylinder is uncovered whereby suction is relieved, this action being timed to take place when it is required that the plate be released by the suction nozzle.
Patent GB-853918-A (GB)
Title: Fuel control device for internal-combustion engines
IPC: F02M3/045
Filed: 1959-02-25
Abstract: 853,918. Carburetting apparatus. KANE, F. A. jun., KANE, F. A., OBERRENDER, G. F., and POSNACK, E. R. Feb. 25, 1959, No. 6521/59. Class 7(3). A deceleration fuel control device for an internal combustion engine having an intake manifold, a carburetter and a fuel mixture passageway extending between the point of carburation of the carburetter and the intake manifold comprises low speed fuel inlet means having an inlet port opening directly into the passageway, valve means including a needle valve positioned at the operative juncture of the passageway and the inlet port and movable between a position in closing relation to the inlet port and another position in open relation thereto, electro-mechanical means operatively connected to the valve for moving it between its positions, an electric circuit connected to the electro-mechanical means and switch means in the circuit. Referring to Figs. 1, 3 and 4 upon deceleration through closing of the throttle 45 the intake manifold vacuum controlled electrical switch 24 is instantly closed whereupon the needle valve 118 is instantly projected into its closed position thereby preventing any fuel from flowing through the idling orifice 47 into the intake manifold. The valve 118 is controlled by the plunger 99 of the solenoid 98. When the throttle 45 is opened after the deceleration cycle the intake manifold vacuum is reduced causing the opening of the idling orifice 47. While the deceleration cycle is approaching its end and the pressure in the manifold is returning to normal idling valves the bleeder tank 88 serves to create a lag in the separation of the switch contacts of the switch 24. The filter 56 and bleeder tank 88 may be dispensed with under certain conditions. Figs. 12 and 13 show the application of the invention to a dual carburetter. The solenoid 130 has a plunger 131 which operates two needle valves 157 and 158. The needle valves co-operate with the idling orifices 163 and 164. When the plunger 131 is retracted the needle valves are caused to shut off the fuel supply through the idling orifices.
Patent GB-1198774-A (GB)
Title: Extrusion of Metals
Inventor: CLAPPIER ROBERT R
IPC: B21C23/32
Filed: 1968-02-09
Abstract: 1,198,774. Extruding. HENRY WIGGIN & CO. Ltd. 9 Feb., 1968 [24 Feb., 1967], No. 6582/68. Heading B3P. In the hot extrusion of a cylindrical billet of metal whose melting point exceeds 1250‹ C. such as steel, nickel or nickel base alloys, a fibrous extrusion lubricant is used whose fibres are all of mineral wool. The wool may be derived from natural rocks or may be slag wool ; it is preferably coated or impregnated with a halide or carbonate of an alkali or alkaline earth metal, e.g. barium chloride, lithium chloride, lithium carbonate, cryolite, or sodium carbonate acting as a fluxing agent. The flux may be mixed with water to form a slurry which is coated on a pad of mineral wool. A thin sheet of the lubricant or a thin sheet of glass also may be interposed between the billet and the cylindrical container wall. When extruding a hollow billet, glass powder may be placed in the bore of the billet. Specific examples are given for extruding nickelchromium steel and alloy.
Patent GB-670179-A (GB)
Title: Improvements in or relating to suspension filing appliances
Inventor: RANDALL JOHN WILLIAM
IPC: B42F15/00
Filed: 1949-03-10
Abstract: 670,179. Filing papers. DICKINSON & CO., Ltd., J. March 30, 1950 [March 10, 1949], No. 6590/49. Classes 16 and 146 (i). In a suspension filing device, cross suspension means for the folders comprise an inner supporting bar 1 and an outer clamping bar 2, the bars being interlocked in longitudinally telescopic relation when fitted to the side edge or edges of the folder or folders and each bar being provided with a rail engaging notch or hook 3, 8 at one end and a rail clearance recess 5a, 9a at the other end such that the hook 3 engages one rail 4 and the hook 8 engages the other rail 6 and the bars 1, 2 are relatively displaceable longitudinally so as to accommodate variation in the spacing of the rails 4, 6 and to permit an angularly inclined position of the bars and suspended folder or folders. The bars 1, 2 project at each end clear of the folders and the clamping bar 2 which is of channel section, is provided with inwardly projecting protuberances 10, 11 extending beneath the bar 1 which lock the bars in position on the free side edge of the folders. To limit the relative telescopic movement of the bars, bar 1 is cut away at 12 and the bar 2 is provided with an abutment 13 to engage the shoulder 12, their positions being such as to prevent withdrawal of the bar 1 clear of the rail 6. The upper longitudinal and end edges of the folders may be cut away to provide clearances in the area of the protuberances.  Tabs.-Index tabs 15 comprise an upwardly projecting frame portion 16 for displaying a label 17 and a U-shaped clip portion 18 having inwardly projecting protuberances or holes 19 which may engage any pair of holes or protuberances 14 from a row of holes or protuberances provided along one side of the clamping bar 2.
Patent GB-900702-A (GB)
Title: Improvements in or relating to inverter circuit arrangements
Inventor: SALTERS GEORGE
IPC: H02M5/27
Filed: 1960-02-25
Abstract: 900,702. Inverting. MULLARD Ltd. Feb. 25, 1960, No. 6740/60. Class 38 (2). [Also in Group XL (c)] An inverter comprises a transformer T whose primary circuit includes two silicon-controlled rectifiers SCR1, SCR2 which are switched to pass current from a D.C. source through the primary winding in alternate directions to produce pulses, the transformer having secondary windings (or tappings) in which voltage pulses of differing amplitudes a, b, c are induced, these windings being connected to output terminals through pairs of back-to-back silicon controlled rectifiers SCR3 . . . SCR8 and a filter circuit L2, C2, and these S.C.R.'s being sequentially switched on so that an approximately sinusoidal waveform is built up from the pulses. The amplitudes a, b, c have the proportions shown, the duration t of the pulses a and b equals <SP>1</SP>/ 12 th the period T of the output wave, and the pulse c has a duration 2t. The longer pulse may be obtained by applying a longer triggering pulse to the primary S.C.R. Alternatively when these triggering pulses occur at equal intervals t, the SCR involved may be pulsed twice in succession. Commutation may be effected by a capacitor C1. A correct sequence of operation of the S.C.R.'s may be derived from a rotary switch arrangement (Fig. 5, not shown). A three-phase arrangement is also disclosed.
Patent GB-1151621-A (GB)
Title: Differential Gear Assemblies
Inventor: MAINA MARIO JOSEPH
IPC: B60K17/16
Filed: 1967-02-13
Abstract: 1,151,621. Differential gearing. VAUXHALL MOTORS Ltd. 1 Feb., 1968 [13 Feb., 1967], No. 6745/67. Heading F2D. A differential gear comprises an epicyclic gear unit 14 and a pair of similarly acting sprag clutches 30, 36 mounted between the two output members 16, 18, the clutches being mounted in a common sleeve 34 connected to the input member 10 through a change-speed gear 44. The epicyclic unit 14 consists of pairs of intermeshing planet pinions 20, 22 respectively engaging an annulus 26 and a sun pinion 28, the sprag clutch 30 being carried by an extension 32 of the planet carrier 24. The change-speed unit 44 consists of integral spur pinions 42, 50 of differing pitch diameters and carried on a sleeve 54 mounted eccentrically with respect to the output member 18. In operation the gear unit 44 drives the clutch sleeve 34 at an increased speed in relation to the input member 10, thus permitting a limited degree of overrunning of either of the clutches 30, 36 and consequent differential rotation of the members 16, 18.
Patent GB-952420-A (GB)
Title: Improvements relating to tables
Inventor: HANDS ALBERT JAMES
IPC: A47B1/04
Filed: 1962-02-21
Abstract: 952,420. Tables. W. HANDS & SONS Ltd. Feb. 1, 1963 [Feb. 21, 1962], No. 6756/62. Heading A4H. A table having a rectangular top 13 With segmented flaps 14 hinged to its edges is provided with means for supporting the flaps 14 to be coplanar with the top 13 and means for retaining the folded down flaps 14 against the underside of the top 13. A bar 17 is slidably mounted in a groove 18 in the underside of the top 13 such that it may either be extended to engage a central groove 19 in the flap 14 to support the latter or retracted to permit downward hinging of the flap 14 to be retained against the underside of the top 13 by a spring clip, turnbuckle or like means 16. The slide bar 17 is provided with a locking bolt having a handle head 24 by means of which it is locked in the extended position.
Patent GB-577906-A (GB)
Title: A process and apparatus for the cracking of carbonaceous material
IPC: C01B3/34
Filed: 1944-03-21
Abstract: 577,906. Cracking oils. STEINSCHLAEGER, M. March 21. 1944, No. 6802/43. [Class 32] [Also in Groups XII and XXVII] In a process for the production of fuel suitable for direct supply to an I.C. engine of the kind in which the fuel is generated by injection of oil, tar, powdered pitch or coal into fuel gases the sensible heat of which is sufficient to crack the oil &c. the mixture of cracking and combustion products thus produced is cooled in one or more heat exchangers with or without compression so as to produce a condensate, which is separated, and the residual gases are then passed through the said heat exchangers thus increasing their temperature to the required degree prior to their use in the I.C. engine. Alternatively the air supply for the I.C. engine may be preheated by passage through the heat exchangers. Hydrocarbon gases, oxygen or air, and steam or carbondioxide are passed through conduits 2, 3, 4 into the burner 1 and oil &c. supplied through line 7 is cracked by contact with the combustion gases generated in the burner. The mixed gases are passed through line 8 and heat exchanger 9 and thence through line 10 and heat exchanger 11 the cooled gases passing through line 12 into cooler and precipitator 13, and the condensate formed being removed through conduit 14. The cooled gases are reheated by passage in the reverse direction through the heat exchangers 11, 9 and are then utilized to drive engines 16, 18. The hydrocarbons may be preheated in heat exchanger 6 prior to entering the burner chamber 1. Specification 426,496, [Group XII], is referred to.
Patent GB-1435846-A (GB)
Title: Selective printer
IPC: B41J29/38
Filed: 1974-02-15
Abstract: 1435846 Automatic control of printing INTERNATIONAL BUSINESS MACHINES CORP 15 Feb 1974 [5 March 1973] 6902/74 Heading G3N A selective printer comprises a control means for a motor moving a type carrier adapted to vary the speed of the motor in accordance with variations in the value of a common source of energy for the control means and a hammer operating means so as to maintain registration between print hammers and type characters. As shown, an endless type-belt 12 carries type characters 16 on fingers 18 and is driven by a pulley 14 coupled to a stepping motor 30. A plurality of print hammers, such as 22, are electromagnetically actuated by windings 23 energized in timed relationship with marks 20 on the belt. as sensed by a photo-electric device 20 and controlled by a device 24. The motor 30 is stepped by pulses from a device 32. Since the flight-time of a print hammer is related to the voltage applied to the windings 23, the pulse rate of the pulses applied to the motor 30 is varied in correspondence by deriving the pulses from a relaxation oscillator, the charge/  discharge capacitor being fed through a voltage dependent transistor-diode circuit. A gradual initial start-up is provided by biasing the transistor by a ramp generator. The pulses are gated to the stepping-motor windings by a binary counter.
Patent GB-145126-A (GB)
Title: Improved device for regulating the admission of the driving means in steam engines, compressed air engines, and the like
IPC: F01L23/00
Filed: 1919-03-20
Abstract: 145,126. Ellehammer, J. C. Hansen-. March 20, 1919. Combined fluid-actuated and mechanical gears; beat or lift valves.-The valve is opened by the piston, held open by a spring, and closed by the rush of fluid-pressure at a definite point in the stroke. The piston 7 during its up stroke engages a rod 16 and compresses a spring 14 housed in the hollow rod 15 which is guided by a sleeve 18. When the piston 7 engages the sleeve 12 on the valve it is raised from its seat, balanced, and fully opened by the spring 14. During the down stroke of the piston, the valve remains open until the piston releases the rod 16, when the valve is. closed by the rush of fluid.
Patent GB-349153-A (GB)
Title: Improvements in and relating to axles for motor road vehicles
IPC: B60B35/08
Filed: 1930-03-04
Abstract: 349,153. Motor vehicle axles. KIRKSTALL FORGE, Ltd., AYLWIN, E. A., and COWELL, F. R., Kirkstall Forge, near Leeds. March 4, 1930, No. 7060. [Class 79 (iv).] An axle forged or stamped in one piece comprises a main body part A circular in cross section formed with forked ends or bosses D cranked outwardly and a boring H extending through the main body part from end to end, the open ends of the boring being unobstructed by the cranked ends or bosses. The central portion is bored after forging. Spring seats B are formed on the axle, and the ends have strengthening flanges E and bosses F for the steering pivots.
Patent GB-573366-A (GB)
Title: Polymerisation of vinyl chloride
IPC: C08F14/06
Filed: 1941-06-04
Abstract: Polymeric materials are prepared by causing vinyl chloride to polymerize, by itself or together with one or more other polymerizable olefinic compound which is, or are, not present in preponderating amount, in an aqueous medium, and in the presence of a water-soluble persulphate and of a water-soluble compound capable of taking up molecular oxygen.  The other polymerizable compound may be an ester, nitrile or amide of acrylic, methacrylic, fumaric or maleic acid, a vinyl ester or ether, styrene, or unsymmetrical dichloroethylene.  The aqueous medium may be water, or one in which the vinyl chloride dissolves, e.g. a mixture of water with an alcohol such as ethanol, and may be made weakly acid or alkaline.  The persulphate may be the sodium, potassium or ammonium salt, and the compound capable of taking up molecular oxygen may be sulphurous acid or its water-soluble salts, a water-soluble hydrosulphite, a water-soluble pyrosulphite, e.g. potassium metabisulphite, hydroxylamine or hydrazine and their water-soluble salts, or thioglycollic acid and its water-soluble salts.  When the aqueous medium is such that the vinyl chloride is not or is not wholly dissolved, emulsifying agents may be present, e.g. soaps, the water-soluble salts of sulphonated animal and vegetable fats and oils, and the water-soluble salts of the sulphuric esters of fatty alcohols. The polymerization may be effected in an autoclave, or may be carried out in a continuous manner, e.g. by passing an emulsion of the ingredients through a tube, or by introducing the vinyl chloride in gaseous form into the base of a tower containing a p  solution of the persulphate and the compound capable of taking up molecular oxygen, and drawing off a dispersion of the polymer while fresh emulsion is simultaneously introduced.  The polymer may be separated from the dispersion by filtration or evaporation, or by the addition of an electrolyte, e.g. sodium chloride or lead acetate. Specifications 410,132, 466,898, 467,167, 476,727, 482,583, 482,647 and 494,772 are referred to.
Patent GB-440532-A (GB)
Title: Improvements in and relating to electric motors
IPC: E01B5/08
Filed: 1935-03-06
Abstract: 440,532. Dynamo-electric machines. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. March 6, 1935, No. 7076. Convention date, March 6, 1934. [Class 35] Machines with armatures moving longitudinally.-A rectilinear motor has the armature disposed between field magnet poles and the armature has series-connected coils arranged transversely to its length. In the form shown, the coils 8 are arranged as shown in Fig. 5 so that at any instant the current in the parts 9 of the coils transverse to the longitudinal axis of the armature flows in the same direction except at the armature ends and the coils are located in a casing 20 arranged between the poles 13, 14 of the wound U-shaped stator 12. The armature is connected to a sliding door 1 and may be supplied with alternating or continuous-current.
Patent GB-908968-A (GB)
Title: Improvements in or relating to electric power supply arrangements
Inventor: SMITH ALFRED JOHN
IPC: H02M7/54
Filed: 1958-03-05
Abstract: 908,968. Control of A.C. motors. ROLLSROYCE Ltd. Feb. 27, 1959 [March 5, 1958], No. 7161/58. Class 38 (3). [Also in Groups XXXV and XL (a)] Synchronous A.C. motors a which turn screws to move control rods in a nuclear reactor are fed from a 3-phase A.C. supply obtained from a D.C. supply by a converting arrangement comprising a ring of contact studs 0-35 interconnected by short circuits or resistances u, v, w, x, y, and connected to D.C. terminals and a rotating member bearing three equiangularly disposed contact arms A, B, C which contact the studs and provide the three phases. The frequency and hence the speed of the motors depends on the rate of rotation of the contact arms.
Patent GB-156025-A (GB)
Title: Improved means for removing fibrous materials from the bottoms of digesters used in paper making
IPC: D21C7/08
Filed: 1920-03-10
Abstract: 156,025. Wallace, W. M. March 10, 1920. Digesters.-Means for cleaning out digesters comprise a funnel M with one or more outlets P, Q adapted to fit into a closable hole L in the perforated bottom D and a pipe G for directing a stream of water into the funnel from which it passes above and below the false bottom. In a modification, the funnel extends upwards to about half the height of the digester.
Patent GB-710590-A (GB)
Title: Ball joints for pipes
Inventor: GRETTON-LOWE REGINALD
IPC: F16L27/073
Filed: 1952-03-21
Abstract: 710,590. Pipe joints. GASKELL & CHAMBERS, Ltd. March 16, 1953 [March 21, 1952], No. 7326/52. Class 99 (1). A ball-and-socket joint comprises a metal socket a having a spherical or conical seat d for the ball e and a conical seat d' into which the seat d merges, and a packing ring h having surfaces complementary to the seat d' and the ball. A gland nut f screwing on to the socket and a locknut j complete the joint. The packing ring has an oblique slot i for ease of replacement.
Patent GB-1332087-A (GB)
Title: Chrairs
IPC: A47C5/12
Filed: 1972-02-18
Abstract: 1332087 Chair frames and joints NAVAN STEEL PRODUCTS Ltd 18 Feb 1972 [19 Feb 1971] 7515/72 Heading A4H A chair has a moulded seat portion 1 mounted upon a metal leg portion (2, 3) wherein the seat portion has integrally moulded on its underside two loops 9 and two sockets 10 which slidably receive complementary tongues 6, 7 on the leg portion, the loops, sockets and/or tongues being resiliently flexible and at least two of the tongues 7 having projections 8 which engage in apertures 11 in the sockets or loops to prevent withdrawal. The tongues 6, 7 are formed on the ends of bracing elements 5 to which the tubular legs (2a, 2b, 3a, 3b) are welded. The seat portion is moulded from plastics or fibre glass, and may consist of sheet material. The chair is stackable.