baber/WOPTO huggingface dataset:
Patent GB-1457572-A (GB)
Title: Electronic keyboard
IPC: H03K17/96
Filed: 1974-02-05
Abstract: 1457572 Keyboards MAGIC DOT Inc 5 Feb 1974 [9 March 1973] 05289/74 Heading G4H A solid-state electronic encoding keyboard comprises a plurality of electrically-isolated individual key surfaces immovably fixed to a major face of an insulator and feeding a plurality of signal encoders feeding output means arranged on a face of the insulator. The encoders, which are on the other major face of the insulator (from the key surfaces), constitute a matrix of cross-points with transistors at selected crosspoints to give a binary-coded signal corresponding to the "0"-"9" key surface touched by the user, and a strobe signal in response to touching of any of the "0"-"9" keys, "set" and "clear" keys producing signals from respective individual transistors on respective individual lines. The signals are oscillatory, being fed to the transistors from an oscillator via an aerial in the form of a grid surrounding the keys and then capacitive coupling via the user to the key touched. Alternatively the oscillation can be applied to points in the circuit between the keys and transistors, the aerial being merely for shielding. The aerial could alternatively be a metal layer or loop or the chassis. Resistive rather than capacitive coupling of the user may be utilized. The signals from the transistors are integrated before use (in a calculator with display). Amplifiers may be inserted. Diodes may replace the transistors.
Patent GB-1124524-A (GB)
Title: Process for the production of spherical formed bodies from synthetic zeolites
Inventor: GRAHN EBERHARD
IPC: B01J20/18
Filed: 1966-02-07
Abstract: Spherical granules of a synthetic zeolite and a solid water-insoluble inorganic binder are produced by placing a mixture of zeolite and binder in a rotating vessel and moistening with water, then adding continuously or intermittently over at least 30 minutes a mixture of zeolite (particle size 0.1-60m ) and binder (having at least 10% of the particles less than 90m  in diameter) together with water or an aqueous solution of a soluble inorganic binder.  The initial mixture may be the same as that subsequently added, or may be recycled undersize product, e.g. of particle size 0.1-1 mm.  Suitable solid binders are kaolin, montmorillonite, illite, halloysite, palygorskite, kieselguhr, alkaline earth metal hydroxide or oxide, or Al oxide.  Suitable soluble binders are alkali metal hydroxide, carbonate, bicarbonate, silicate, or aluminate, silica or alumina sol, or Al sulphate.  The zeolite may be type A, X, Y, R, S, T, W, or H, or mordenite, and may be mixed with, e.g. 10-20% binder by grinding. The vessel may be pear-shaped or cylindrical, rotating about an oblique axis, and may contain wooden milling balls up to 40 cm. in diam.  Rolling may be continued after the addition is complete, optionally spraying with water and blowing with air at 80 DEG  C. The granules may be sieved and calcined at 600-700 DEG  C. They may have diameters of 0.2-10 mm.ALSO:Spherical granules of a synthetic zeolite and a solid water-insoluble inorganic binder for use as an adsorbent are produced by placing a mixture of zeolite and binder in a rotating vessel and moistening with water, then adding continuously or intermittently over at least 30 mins. a mixture of zeolite (particle size 0.1-60m ) and binder (having at least 10% of the particles less than 90m  in diameter) together with water or an aqueous solution of a soluble inorganic binder.  The initial mixture may be the same as that subsequently added, or may be recycled undersize product, e.g. of particle size 0.1-1 mm. Suitable solid binders are kaolin, montmorillonite, illite, halloysite, polygorskite, kieselguhr, alkaline earth metal hydroxide or oxide, or Al oxide.  Suitable soluble binders are alkali metal hydroxide, carbonate, bicarbonate, silicate, or aluminate, silica or alumina sol, or Al sulphate.  The zeolite may be type A, X, Y, R, S, T, W, or H, or mordenite, and may be mixed with e.g. 10-20% binder by grinding.  The vessel may be pear shaped or cylindrical, rotating about an oblique axis, and may contain wooden milling balls up to 40 cm in diam.  Rolling may be continued after the addition is complete, optionally spraying with water and blowing with air at 80 DEG C.  The granules may be sieved and calcined at 600-700 DEG C.  They may have diameters of 0.2-10mm.
Patent GB-127317-A (GB)
Title: Improvements in or relating to Governors or Controlling Devices for Internal Combustion Engines.
IPC: F02D9/00
Filed: 1917-04-16
Abstract: 127,317. Napier & Son, D., and Mortimer, G. April 16, 1917. Fluid governors.-A governor for internal-combustion engines, particularly for use in aircraft, comprises a chamber B containing a piston C acted on by a spring D or weight or liquid pressure, the movements of the piston being communicated to a device, such as a. throttle valve G, for controlling the quantity or quality of the combustible mixture or the quantity of air or fuel delivered to the engine. The chamber has an elongated outlet such as B<3>, the size of which is varied by or as a result of the movements of the piston produced by variations in the density of the air pumped into the chamber by a pump K driven by the engine. Instead of forcing air into the chamber B, air may be withdrawn from it by the pump. In another form the spring D is dispensed with, and liquid is pumped into one end of the chamber, and air is pumped into or out of the other end. The slot B<3> may be variable in size and may be replaced by a slot in the piston rod.
Patent GB-1171865-A (GB)
Title: Continuous Process for the Preparation of p-Xylene.
Inventor: PLATEEUW JOOST CORNELIS
IPC: B01J29/00
Filed: 1967-10-19
Abstract: 1,171,865. Isomerizing xylenes. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 17 Oct., 1968 [19 Oct., 1967; 2 Feb., 1968], Nos. 47587/67 and 5393/68. Heading C5E. In a one-stage continuous isomerization process in which a mixture of two or more C 8  aromatic hydrocarbons comprising ethylbenzene as one component is contacted with hydrogen in an isomerization section in the presence of a catalyst comprising an acidic refractory oxide and a hydrogenating/dehydrogenating metal component, and in which the product mixture is subsequently fractionated, the isomerization is conducted under such conditions of temperature and hydrogen partial pressure that the product mixture before fractionation contains 1-50 wt. per cent of C 8  naphthenes, at least 10% of which are recycled, after recovery, direct to the isomerization. Decrease in catalyst activity may be counteracted by increasing both temperature and hydrogen partial pressure in such a way that the product mixture maintains the desired C 8  naphthene content. Individual xylenes may be recovered as desired: o-xylene by appropriate fractionation, m-xylene by extraction with HF/BF 3  or HF/PF 5 , and p-xylene by crystallization. Unwanted xylenes may be recycled to isomerization.
Patent GB-849581-A (GB)
Title: A method of establishing a fluid-tight closure
IPC: F16J13/12
Filed: 1959-02-17
Abstract: 849,581. Closures for resisting fluid pressure. ATOMIC ENERGY OF CANADA Ltd. Feb. 17, 1959 [March 25, 1958], No. 5485/59. Class 123(1) A pressure-resisting closure for a vessel 10 comprises a flexible disc 15 having a peripheral sealing area 26 engaging on an upstanding annular flange 19 formed in the neck of the vessel. The neck is internally threaded to take a plug 13 having an internally projecting annular flange 14 of less diameter than the flange 19, the flange 14 bearing on the outer face of the disc. A gasket 17 is provided between the disc and the flange 19. Fig. 1 shows the initial stage in closing the vessel, the plug 13 having been tightened so that the disc bears lightly on the flange 19. A push rod 20 is then used to arch the flexible disc, Fig. 3, to seal its periphery on the flange 19 and the plug is tightened to bring its flange 14 firmly against the outer face of the disc. On releasing the push rod, Fig. 4, the disc moves back exerting a constant sealing pressure on the flange 19, the flange 14 acting as a fulcrum. Internal pressure in the container increases the sealing pressure of the disc. In a modification the push rod is fixed to the centre of the disc.
Patent GB-1456183-A (GB)
Title: Hydraulic fluid reservoir
IPC: B01D35/027
Filed: 1975-02-10
Abstract: 1456183 Hydraulic reservoirs AISIN SEIKI KK 10 Feb 1975 [20 Feb 1974] 5510/75 Heading F1D A reservoir 10, Fig. 1, for hydraulic fluid includes an accumulator 15 comprising a spring- loaded cylinder which slides on a member 11 as liquid is pumped into a chamber 18. In operation, liquid is pumped into the chamber 18 by a pump 43 through a line 44, a changeover valve 45, a check-valve 47, line 48, port 84 and a bore 49 until a pressure P 1  is reached. A sensing device changes over the valve 45 at this pressure so that liquid is pumped through a line 54 and a tube 53 into the reservoir through a filter 22. Liquid may now be drawn from the accumulator through the line 48 to operate an actuator 51. When the pressure in the accumulator falls to a valve P 2 , the valve 45 is changed over again so that the pump recharges the accumulator. If the filter 22 becomes blocked, pressure in a chamber 23 raises a resilient annulus 21 which acts as a relief valve. If the liquid level falls due to leakage, this is detected by a switch 37 actuated by a magnet 38 in a float 39. Fig. 2 shows an embodiment which operates in a similar manner. Pressure relief is provided, if the filter 22 becomes blocked, by a poppet valve 57.
Patent GB-349030-A (GB)
Title: Improvements in or relating to cutting off machines for cigarette rods
IPC: A24C5/28
Filed: 1930-02-19
Abstract: 349,030. Grinding. TOBACCO MANUFACTURERS (INDIA), Ltd,, 37, Chowringhee Road, Calcutta, and CRICHTON, J., Monghyr, Behar, both in India. Feb. 19, 1930, No. 5541. [Class 60.] Machine cutters, grinding in situ.-In a cutting- mechanism for continuous-rod cigarette-making machines in which a rotary cutter 24 and camactuated ledger tubes 5 travel with the rod during cutting, the knife 24 is carried at the end of a knifeholder 22 pivoted on an axis passing transversely through the axis of the driving shaft 53 and actuated by a stationary cam 37 engaged by rollers 34 on the knife-holder. The cutter 24 is sharpened by emery wheels 49 rotatable on threaded spindles 47 adjustable in members 45, which are pivoted on bars 44 adjustably mounted on brackets 43.
Patent GB-699501-A (GB)
Title: Improved mould chains for metal casting machines
IPC: B22D5/04
Filed: 1952-03-04
Abstract: 699,501. Casting-machines. BAMAGMEGUIN AKT.-GES. March 4, 1952 [May 9, 1951], No. 5608/52. Class 83 (i). [Also in Group XXX] In a casting-machine, particularly for pig iron, having chill moulds 7 arranged between two chains running over stationary rollers 1, the chain links 2 have plates 4 to screen the pivots 10 from hot metal when pouring, and pairs of extensions 6 for receiving the moulds, connected together. These connections may be rigid bars 9 and the outer parts of the plates 4 may have ledges 5 to guide the chains laterally.
Patent GB-324550-A (GB)
Title: Improvements in and relating to elevators for stacking cut crops
IPC: A01D87/02
Filed: 1929-02-20
Abstract: 324,550. Cook, T. W., and Cook, W. T. Feb. 20, 1929. Guards and shields to prevent falling-off and spilling.-Means provided on an elevator for preventing crops when being stocked from rolling back or being blown away, comprise a plurality of flexible galvanized wire or like ropes 1 suspended between two pivotal arms 4 and 6, the parts being arranged so that the ropes 1 are allowed to sag and rest lightly on the crops on the elevator.
Patent GB-333884-A (GB)
Title: Improvements in or relating to sound reproducing devices for telephony or the like applications
IPC: H04R11/00
Filed: 1929-02-20
Abstract: 333,884. Price, S. L. Feb. 20, 1929. Magnetic instruments.-The armature of a loud-speaker or pick-up is suspended from a semirigid member by a resilient member or members, so as to give the armature comparatively unrestricted freedom to vibrate. Fig. 1 shows a construction in which an armature 10 is carried by a substantially rigid, non-magnetic, intermediate member 7 which is' hinged at one end at 5 to the semi-rigid supporting member or. reed 1 and is suspended at its other end from the member 1 by a U-shaped spring 6. A rod 11 passing through an aperture 4 in the member 1 connects the armature to a diaphragm. The strip 1 is secured at its ends to a casing containing the magnets (Fig. 3, not shown). Fig. 2 shows a similar construction in which the intermediate member 7 is dispensed with, the armature comprising a portion 10 of greater area with two portions 14, 15 of smaller area for connecting to the hinge 5 and spring 6 respectively. Various forms of the hinge or pivot 5 are described, that shown comprising one or more lengths of wire passing through holes in or otherwise engaging the members 1 and 7. In the modified constructions shown in Figs. 4 - - 7, the intermediate member 7 is formed with integral or attached resilient extensions 25, 27, 29 or 31 adapted to be attached to the member 1, e.g. by soldering to struts rigidly carried by the member 1. The longer limb of a spring 6 is attached at the points 8, the other end of the spring being secured to the member 1 as in Fig. 1. In the case of Fig. 7 in which the extensions 31 are to one side of the centre of the member 7, the armature 10 is displaced as shown in order that the centre of gravity of the whole lies in the lines of the extensions. According to a further modification. the armature may be suspended from the member 1 by leaf or U- shaped springs (Fig. 8, not shown). All the various suspension means may be applied either for suspending the armature directly from the member 1 or for mounting the intermediate member 7 carrying an armature. The member 1 may be formed of magnetic material.
Patent GB-1414092-A (GB)
Title: Wheel chairs
IPC: A61G5/04
Filed: 1973-02-05
Abstract: 1414092 Wheel motor unit for wheelchairs VESSA Ltd 30 Jan 1974 [5 Feb 1973] 5667/73 Heading B7H [Also in Division F2] The rear wheels of a collapsible wheelchair are driven by electric motors 9 mounted on plates attached to the wheel axles, each motor having a transverse drive shaft 12 which passes through the plate 5 and carries a gear 11 which meshes with a gear 14 keyed to the wheel hub 15. The wheels are mounted on stub axles fixed to the chair frame, and the motors are supported on the plates through their gear housing 58. Each drive shaft 12 is diametrically opposed to a clutch spindle 13, and the motors of the opposed wheels are respectively mounted in upper and lower positions so that they overlap on lateral folding of the chair. The plate 5, wheel rim 20 and a removable cover 19 from a housing enclosing the gears and clutch. The gear 14 is axially slidable on the hub so as to be disengageable from gear 11, movement being effected against the action of a spring by a manually operable clutch lever.
Patent GB-912117-A (GB)
Title: Walk-type tractor
IPC: B62D51/04
Filed: 1960-02-17
Abstract: 912,117. Walk-type tractors. KOCH, H., and KOCH, T., [trading as HAKO H. KOCH & SOHN]. Feb. 17, 1960 [March 28, 1959], No. 5680/60. Classes 79(1) and 79(2). A belt-driven pulley 5 of a walk-type tractor is driven through a clutch from an I.C. engine, the pulley rotating a shaft 22 from which a shaft 24 is driven through gears 21 and 25. A shaft 29, which may be arranged as a power take-off shaft, is driven by engaging one or other gears 23 or 23<SP>1</SP> with gear 26 or 28 to provide two speeds, or by engaging gear 23<SP>1</SP> with gear 301 which, through gear 30 rotates gear 28 in reverse. A sprocket 27 on shaft 29 is connected by a chain 31 to a sprocket 59 integral with a hub 59<SP>1</SP> which carries a pair of bevel gears 67 on a shaft 68 which are in mesh with a bevel gear formed on a half shaft 71 and a bevel gear 72 pivotally mounted on a half shaft 77. The half shaft 77 and the member 72 have splined portions so that they may be connected together by a sliding clutch member 60. The clutch member 60 also has dog clutch teeth 60<SP>1</SP> which may be brought into engagement with corresponding teeth 59<SP>11</SP> on the hub 59<SP>1</SP> so that in three positions of the clutch member 60, (1) the differential is ineffective and the power take-off shaft 29 is used; (2) in which 77 and 72 only are connected which provides an ordinary differential gear and (3) in which 60<SP>1</SP> and 59<SP>11</SP> are connected when the whole differential gear is locked. The clutch member 60 and sliding double gear 14 are operated by gear shift forks 80 and 82 attached to shafts 76 and 87 respectively which are operated by levers 83 and 84 connected by linkwork to the tractor handle. The shaft 85 is mounted in a spherical bearing 85 attached to the gear casing 20 and the shaft 87 has a spherical head 87<SP>1</SP> seating in a cylindrical bush 88 attached to an outer casing containing the gear-box 20. Specification 912,116 is referred to.
Patent GB-539678-A (GB)
Title: Improvements in or relating to aerials
IPC: H01Q9/26
Filed: 1940-04-01
Abstract: 539,678. Aerials ; directive wireless systems. FLETCHER, H. April 1, 1940, No. 5779. [Class 40 (v)] A pair of aerials A, B oscillating in phase opposition as indicated diagrammatically in Fig. 2 is simulated by bending back on itself each conductor of a twowire transmission line which is fed by a source Eo and is terminated non-reflectively by the surge impedance Ro as shown in Fig. 1. The plane into which each conductor is bent is not the plane containing the two conductors of the line. The aerial radiates efficiently over a wide frequency band and maintains a substantially constant and non-reactive input impedance. The distance d is small compared with the wavelength, and the spacing D of the same order as the wave-length and may vary between the limits #/2 and #/20, but is chosen to give a desired horizontal directive effect. Vertical directivity is controlled by the ratio L/#. where L is the height of each aerial. The aerials may be set up in a horizontal instead of a vertical direction, thus radiating horizontally-polarized waves. Two or more pairs such as A, B, and C, D may be connected in parallel and set up in the same plane as shown in Fig. 3, or they may be set up in parallel planes, Fig. 4 (not shown). They may be energized in phase agreement or in phase opposition, and owing to their reduced joint impedance, they may be matched by a feeder line of less spacing. Two systems set up at right angles and energized in phase quadrature may be used to give an omnidirectional field. The aerials may be used for reception.
Patent GB-1534039-A (GB)
Title: Metal detector
IPC: G01V3/10
Filed: 1976-02-13
Abstract: 1534039 Metal detector CANDLE INTERNATIONAL RESEARCH & DEVELOPMENT Ltd 13 Feb 1976 05845/76 Heading G1N A metal detector includes a search head having transmit and receive coils 1, 3 respectively, the former energized directly by a 2À5 kHz oscillator 2. The receive coil output signal is passed to a gate circuit 5. The oscillator output signal is also fed to a shaper 6 producing from it an alternating squarewave which is differentiated 7 and the resulting pulses fed to a delay circuit 8. This produces an output pulse of adjustable duration in response to each pulse from the differentiator. A further differentiator 9 is arranged to produce a pulse at the trailing edge of each pulse from the delay circuit. Thereby a gate pulse shaping circuit 10 controls the gate 5 so as to sample the signal from the receive coil with a phase delay determined by the adjustment of the variable delay circuit 8. In use, the search head is moved alternately between a free air position and a position adjacent to the ground and the delay 8 is adjusted so the ammeter 13 reading does not change for such movement. This represents the condition where the sampling point c corresponds with the crossover point of the two waveforms A, B produced from the receive coil at the respective positions. The voltage from adjustable D.C. source 12 is then set to null the gate 5 output in comparator 11. Thus the effect of the conductivity of the ground to be searched is nullified. Equally the circuit may be adjusted to nullify the effect of cigarette packet foil, which is said to require a phase delay of 180 degrees.
Patent GB-1355446-A (GB)
Title: Machine and method for wrapping three-dimensional rectangular objects
IPC: B65B11/12
Filed: 1972-02-08
Abstract: 1355446 Wrapping machines C R STEVENS 8 Feb 1972 [8 Feb 1971] 5855/72 Heading B8C In a wrapping machine, a wrapper 48 is fed beneath a conveyed stack of paper sheets, leading and trailing portions 50, 49 of the wrapper are folded on to the top of the stack and sealed together, and the end-portions of the now tubular wrapper are folded and sealed at a station 21. An operator places the stack on a table 11 to actuate a switch (LS1, Fig. 3) to raise rollers 29 and lower stops 33 so as to carry the stack to a first conveyer 13. The stack strikes a switch (LS2) to actuate a roller 38 for feeding a wrapping web 25 upwardly through a gap between the first conveyer 13 and a second conveyer 15. This web-feeding elevates a dancer roller 48 to cause a drive to unwind more web from a supply 12. As the stack moves on to the second conveyer 15, belts 51 carried by a pivotal arm 56 engage the top of the stack, and the leading margin 50 of the web is deflected upwardly by fingers 61 so as to be folded back by guides 62 to lie on supports 65. The stack than strikes a switch (LS4) to stop the second conveyer 15 and energize a cutter assembly 14 comprising a rotary cutter and a glue applicator 47 carried by a carriage 45 movable along a transverse guide 44. This cutter serves the wrapper 48 from the web 25 and applies a strip of glue to the trailing wrapper margin 49, and the second conveyer 15 and the belts 51 are re-energized to feed the stack on to a third conveyer 66.  The stack then engages a switch (LS9) to stop the conveyer 66 and lower an elevator 18 supporting the conveyer 66. Downward movement of the elevator actuates a switch (LS10) to pivot a pair of wings 82, 83 to fold the wrapper over the front and rear faces of the stack. A sweep arm 91 then pivots to fold the leading wrapper-margin on to the stack-top, and a second sweep arm 92 sweeps the trailing margin from catches 110 and places it over the leading margin. The wings 82, 83 are then outwardly pivoted and the elevator 18 is raised to reenergize the conveyer 66, which transfers the partially wrapped stack on to a fourth conveyer 19 for transfer to a paddle conveyer 20 having paddles 126 carried by belts 121. The paddle conveyer 20 moves the stack between stationary and pivotal tuckers 131, 132, folding ploughs (136, Fig. 3), glue applicators 138 and folding ploughs 139 which close the wrapper over the stack.