baber/WOPTO huggingface dataset:
Patent GB-1156824-A (GB)
Title: Vibratory Impact Tool.
IPC: E21B1/26
Filed: 1966-05-24
Abstract: 1,156,824. Percussive tools. GENERAL DYNAMICS CORP. 24 May, 1966 [24 May, 1965(2)], No. 22191/66. Heading B4C. [Also in Division E1]  In an impact tool 50 a hammer 88 reciprocates in a bore connecting a plurality of cavities 74, 76, 78, 80, fluid being continuously supplied to one cavity 74 and the flow of fluid from this cavity to another cavity 76 being controlled by the movement of the hammer. The tool is slidably mounted on the tower of a mobile drill rig and is fed by a chain drive. The hammer 88 is floatingly supported in the equilibrium position (shown) by the pressure of fluid in a cavity 78, the pressure in the cavity being controlled by a pump 198 and a centering arrangement 90. Fluid from a large pressure chamber 66 (or an accumulator) is supplied to increase the pressure in a cavity 74 and causes the hammer 88 to commence oscillation, the fluid flowing past the top of the hammer through passages (not shown) into a cavity 76 (maintained at constant pressure by an accumulator, not shown) and back to the chamber through a pump 120. The pressure of the pump 198 may be adjusted to bias the hammer in one direction or the other. As the pressure in the cavity 76 increases the hammer strikes the anvil which comprises a titanium rod 224 attached to a drill steel 214 carrying the drill 228. The anvil and steel are rotated by mechanism in a cavity 82, and a hose may be attached to a casing part 284 to supply flushing fluid to the bit. In a modification (Fig. 11, not shown) the apparatus is inverted and adapted to be mounted on a lift for overhead drilling. In the modifications described below the steel and anvil are not rotated. Modifications include a restriction in the connection between the centering arrangement and the cavity (78) (Figs. 17, 18, not shown), the cavities (74), (76) and (78) and the centering arrangement connected to a single pump (Figs. 18, 19, not shown), and an anvil supported in a housing below the cavity (78), (Fig. 19, 20, not shown), the hammer and anvil connected by a lost motion connection (Fig. 20, not shown), the anvil dispensed with and the tool given an aperture for a pile (Fig. 2, not shown), the anvil including a cushion of oil (Fig. 23, not shown), the centering arrangement dispensed with and the pressure of fluid supplied to the cavity 78 controlled by a valve (Fig. 15, not shown), and the hammer housing, a rodlike extension which strikes the anvil (Fig. 12, not shown). Fig. 13, shows a construction in which the hammer 400 acts as a valve at each end, fluid being supplied to cavities 404, 408 and discharging from cavity 406. In a modified construction (Fig. 16, not shown) the tool is connected to a pump (508) and the hammer (470) is shaped to alternately supply fluid to and discharge fluid from cavities (488), (490).
Patent GB-392392-A (GB)
Title: Improvements in and relating to endless track vehicles
IPC: B62D55/253
Filed: 1932-08-08
Abstract: 392,392. Endless - track vehicles. MARTINAGE, L., 46, Rue de Courcelles, Paris. Aug. 8, 1932, No. 22235. Convention date, Sept. 15, 1931. Addition to 368;628 and 370,264. [Class 79 (i).] The endless track described in the parent Specifications is modified so as to ensure that the flexible band or member 5, secured to the links 1, 2 and the ground members 8, is bent when passing over the idler or driving pulley 6 to a curve which is substantially concentric with the pulley. In the construction shown the outer faces of the links are curved as at 4 to the curve which will give the desired effect. As described in the parent Specifications the track, when passing under the load rollers 10, is rigid in one direction and flexible in the other. The inner faces 3 of the links may be straight, as shown, or curved according to whether the load-supporting rollers 10 are disposed in a straight or a curved line. Each link is secured to a band 5 and to a sole plate 7 having a tread member 8 by a bolt 9. The outer links 1 are prevented from either longitudinal or lateral tilting on the sole plates by means of plates 11 fixed to these links, the plates being provided with flanges 13 bearing against mud shields 14 on the sole plates 7. The inner links are prevented from tilting by plates 12 which are fixed between the links by rivets or other means and have pins 15 resting in holes in the sole plates. The plates 12 pass between the rollers 9 and serve for lateral guiding means, and they also engage between teeth 17 on the driving pulley 6 so as to transmit the drive to the track. In a modification cables are used instead of the flat bands 5, each link being secured to the cables by one bolt and to the sole plate by another bolt, a clear space being maintained between the links and the sole plates to accommodate the cables. The bands or cables may be of metal, leather, or other suitable material.
Patent GB-1338271-A (GB)
Title: Holographic apparatus
IPC: G03H1/26
Filed: 1971-04-19
Abstract: 1338271 Holographic data storage SPERRY RAND CORP 19 April 1971 [27 Feb 1970] 22250/71 Headings G4A and G4C [Also in Division H3] A holographic digital data storage device comprises a plurality of holographic plates arranged in series one behind the other, means for recording holograms thereon and means for reading out the holograms using a coherent beam.  The plates may be electrically-controllable volume holographic crystalline devices as described in Specification 1,312,967 of polar type and having ferroelectric properties in which a hologram may be recorded on the plate when a certain electric field is passed through it, and data may be read out when a certain field is passed through, but when the field is absent a write or read light beam passes right through without any effect. The plate comprises a polar crystalline member 10 (e.g. of strontium barium niobate) having electrodes at opposite sides, a number of plates being held firmly by springs one behind the other in transparent (plexiglass) holders (Fig. 1c, not shown) in a case. The C axis of member 10 is preferably aligned with the direction of a D.C. field applied to the electrodes. It is also possible to have several mutually spaced holographic layers inside one thick crystal and the crystals are preferably in a transparent oil bath. Writing.-A laser 26 sends a beam 27 to beam splitter 28 whence half goes direct through the crystals 10 and the other half is reflected by mirror 32 through a transparent member 30 holding data to be recorded to a crystal having D.C. passed through it. A diffraction grating is formed thereon which is semi-permanent, i.e. it is gradually erased by normal readout or can quickly be erased by a high intensity laser burst. Reading (Fig. 2b, not shown).-D.C. is applied to the desired crystal and a laser beam reads out to a screen. In an alternative embodiment (Fig. 3, not shown) the crystals need not be responsive to an applied electric field for readout. Each crystal has an electrically controllable polarization switch cell on either side. The cell may be of potassium dihydrogen phosphate operating in the longitudinal Pockels mode with the Z axis parallel to the light direction and an electric field applied to the cell. Writing.-All crystals except the desired one are removed from the case, preferably replaced by an equally transparent member, and writing is effected as before. Reading.-Extraordinarily poled light is passed from the laser and normally passes through unaffected because of the respective polarizations of the light, cells and crystal. However if the switch in front of a crystal has its light polarization rotated by 45 degrees by an electric field parallel to its Z axis, and the switch behind the crystal is similarly rotated, the data on the crystal can be read out. The switches may be rotated mechanically. In either embodiment recording can be affected with randomly polarized or plane polarized light and a number of holders can be scanned by one beam.
Patent GB-1116666-A (GB)
Title: Process for butt welding of high tension or ultra high tension steels
IPC: B23K11/04
Filed: 1965-05-26
Abstract: An alloy steel comprises:- .0.17%.C .0.3%.Si .0.9%.Mn .0.011%.P .0.09%.S .0.24%.Cu .1.24%.Ni .0.6%.Cr .0.56%.Mo .0.06%.V .0.02%.B .balance.Fe
Patent GB-973626-A (GB)
Title: Improvements in or relating to the removal of yeast from beer
IPC: C12N1/02
Filed: 1963-06-05
Abstract: 973,626. Centrifugal separators. JOHN LABATT Ltd. June 5, 1963 [June 8, 1962], No. 22393/63. Heading B2P. Yeast is removed from yeasty beer in a centrifuge 2 provided with a feed inlet conduit 9 and discharge conduits 4, 5 and driven by an electric motor 3, the centrifuge and the motor being totally enclosed in a tank 1 which is sealed against external contamination and is continuously purged with a gas which is innocuous to beer. The container may be made of stainless steel or plastic and is provided with an inspection cover. The gas is supplied through a pipe 10 to maintain a positive pressure relative to the atmosphere in the tank and leaves through an outlet (not shown). The yeasty beer is fed through the conduit 9 into the well of an open-type centrifuge. The clarified beer discharges at 5 to a funnel and pipe 8 and the yeast 'slurry leaves at 4 to a trap 6 and pipe 7. The inside of the tank may first be sterilized by "Carboxide" (Registered Trade Mark) gas fed at 10 and subsequently displaced by fermentation gas, carbon dioxide or an inert gas which is circulated through the tank throughout the centrifugation process. A safety device is provided comprising an electrode positioned in the tank bottom and connected through a relay to the electrical circuit servicing the motor 3 and other motors in the fermentation system so that if any liquid were to spill into the tank the centrifuge and pumps in the system would be shut down automatically.
Patent GB-903536-A (GB)
Title: Improvements in rapid hardening cement and in processes for manufacturing such cement
IPC: C04B7/00
Filed: 1960-06-27
Abstract: A rapid hardening Portland cement is formed by mixing a major proportion of normally ground Ferrari cement having an iron modulus of less than 0,64 with a minor proportion of a finely ground high early strength Portland cement with a high calcium standard and containing at least 5% of tricalciumaluminate, the specific surface of the Portland cement exceeding that of the Ferrari cement by at least 30%.  The specific surface O must satisfy the formula O \s0 2800 + 40X + 200y Cm2/gm. where X is the percentage of Portland cement added and y is the percentage of tricalciumaluminate contained therein.  The preferred composition contains 70% Ferrari cement and 30% Portland cement which is ground to at least 4,000 Blaine.
Patent GB-709711-A (GB)
Title: Improvements relating to the stretching of artificial yarns or threads
IPC: D02J1/22
Filed: 1950-09-13
Abstract: <PICT:0709711/IV (a)/1> A yarn or thread of a linear polymer, such as a polyamide or polyurethane, is subjected to stretching between two roller systems which are preceded by a device which imparts a predetermined pre-tension to the thread, the first roller system consisting of a delivery roller and a loading roller which has a surface of an elastic material of high coefficient of friction, and the stretching conditions being such that no slipping of the thread over the delivery roller takes place.  For non-slipping conditions, the value of the stretching tension S1 must be less than the limiting value given by the equation S1 = S2em 1a 1 + m 2a 2 where S2 is the pre-tension, that is the tension in the thread at the point of contact of the loading roller and the delivery roller, m 1 is the coefficient of friction between the thread and the loading roller, m 2 is the coefficient of friction between the thread and the delivery roller, and a 1 and a 2 are the angles of contact between the thread and the loading roller and between the thread and the delivery roller.  As shown, thread is taken from spool 1 and passed round thread-brake 2, guide-roller 2a, loading roller 3, delivery roller 4, stretching roller 6, and guide-roller 5, and is finally wound on spool 7. The loading roller has a covering of an elastic friction material such as cork, rubber, or a synthetic plastic material.  The roller 4 may be driven at a peripheral speed of 50 metres per minute and the stretching roller 6 at a speed of 200 metres per minute. Roller 3 is driven by non-slipping friction from roller 4.  The point at which stretching begins is preferably beyond the point of contact of rollers 3 and 4.  The delivery roller may have a surface of polished chromium, and when treating a polyamide thread the coefficient of friction with such a surface is nearly the same as with a rubber surface.  Alternatively, both delivery roller and loading roller may have a surface of rubber.  The pretension may be 5-20 per cent. of the stretching tension.
Patent GB-243123-A (GB)
Title: Method of preparing adsorptive siliceous material
IPC: C01B33/18
Filed: 1924-09-25
Abstract: Finely divided adsorptive siliceous material is produced by removing water from a colloidal sol, formed by precipitating silicic acid, before a gel can form.  The sol may be dried by spraying into a heated chamber, the drying being carried out to such an extent that the settled solids will not form a sol or gel on contact with water. The product is washed free from impurities with water and again dried.  Iron, silver, platinum, or other catalysts in colloidal form may be added to the silicic acid at the time of precipitation and a mixed product obtained.ALSO:Finely divided adsorptive siliceous material is produced by removing water from a colloidal sol, formed by precipitating silicic acid, before a gel can form.  The sol may be dried by spraying into a heated chamber, the drying being carried out to such an extent that the settled solids will not form a sol or gel on contact with water.  The product is washed free from impurities with water and again dried.  Iron, silver, platinum, or other catalysts in colloidal form may be added to the silicic acid at the time of precipitation and a mixed product obtained.
Patent GB-795724-A (GB)
Title: Improvements in or relating to voltage-dependent resistors
IPC: H01C7/118
Filed: 1954-08-05
Abstract: 795,724. Semi-conductor devices. SIEMENS & HALSKE AKT.-GES. Aug. 5, 1954 [Aug. 5, 1953; Aug. 18, 1953; Aug. 18, 1953; Aug. 18, 1953; April 6, 1954; April 8, 1954; April 14, 1954], No. 22790/54. Class 37. In a voltage dependent resistor consisting of silicon carbide sintered with added material which fills the spaces between the grains of silicon carbide and includes a component capable of wetting the grains during sintering, a semi-conductive intermediate layer containing a low oxide is formed on the grains by the added material. The layer is preferably of the opposite conductivity type to the silicon carbide and in this case the carbide must be selected to be all of one type, e.g. the black variety, and consist of granules of uniform size. The sintering is controlled to give a layer preferably less than a micron thick. Suitable wetting components are lead oxide and tin oxide. The added material may include compounds with directed valencies. In particular the triple oxide of the constituents BaO, PbO and TiO 2 , the quaternary perovskite (BaPb) (TiSn)O 3'  the ferrite ZnOFe 2 O 3  and alkaline earth titanates with perovskite structures, such as may be used. Also mentioned as suitable components of the added material are mixtures of the oxides of nickel and lithium, and of the oxides of zinc and titanium. The added material may be mixed in the solid, liquid or gaseous form with the silicon carbide before or during the sintering. In a preferred embodiment the mass is formed into a disc, foil or sprayed electrodes are applied to its faces and a protective band of thermoplastic or thermosetting insulating material is pressed around the body between the electrodes.
Patent GB-722517-A (GB)
Title: Improvements relating to mechanical handling devices for tractors
IPC: E02F3/627
Filed: 1951-10-01
Abstract: 722,517. Scoop arm loaders. BAMFORD, J. C. Dec. 22, 1952 [Oct. 1, 1951; Feb. 7, 1952], Nos. 22793/51 and 3222/52. Class 78 (3). [Also in Group XXI] In a hydraulically-actuated scoop arm tractor attachment, the implement which may be a loading bucket, a bull-dozing tool, a hook or a platform, but is shown as a lifting fork, is attached to a single arm pivotally mounted at one side of the tractor. As shown the fork 13 is mounted on a braced arm 11, which is pivoted on the horizontal member of a U-. shaped frame 19 secured to the rear axle casing 18. A sub-frame 14, attached to the tractor at 15, 17, carries a bracket 28 in which are mounted trunnions 27 on the pistonrod 25, the cylinder 24 being provided with an adjustable external sleeve having a radial pin 30 which engages a bore in the arm 11. To prevent the loaded fork from tilting the tractor it extends laterally from the arm so that its centre-of-gravity is in a vertical plane passing through the longitudinal axis of the tractor. In a modification, Fig. 5 (not shown), the arm 11 is telescopically arranged in a tubular member pivoted to the rear axle casing and having a series of holes, corresponding with a series of holes in the arm, which allow the arm and tubular member to be locked in a number of positions of adjustment; the cylinder being operatively connected with the tubular member and a forward position on the arm by adjustable turnbuckle links. In another modification the arm is constructed from a pair of interconnected plates between which the cylinder passes and to which the cylinder is pivoted by trunnions. In a further modification the pivoted connection between the arm and cylinder is effected by means of a bracket on the underside of the arm and a pin secured to the upper end of the cylinder.
Patent GB-1345027-A (GB)
Title: Carrier coatings
IPC: G03G9/113
Filed: 1971-04-19
Abstract: 1345027 Coated products XEROX CORP 19 April 1971 [5 Feb 1970[ 22799/71 Heading B2E [Also in Division G2] An electrostatographic developer mixture comprises finely-divided toner particles electrostatically clinging to the surface of carrier beads, each of the beads having a uniform coating comprising cellulose acetate butyrate. The cores of the beads may be of glass, flintshot, sodium chloride, ammonium chloride, aluminium potassium chloride, Rochelle salt, sodium nitrate, potassium chlorate, granular zircon, silicon, polymethylmethacrylate, silicon dioxide, iron, steel, nickel, carborundum and mixtures of these. The particles are coated by contacting with the cellulose acetate butyrate in solution in an organic solvent, of which several are listed. Plasticizers of which many are listed may also be present in the coating. Typical toner materials may be gum copal, gum sandarac, rosin, coumarone-indene resin, asphaltum, gilsonite, phenol-formaldehyde resins, rosin-modified phenol-formaldehyde resins, methacrylic resins, polystyrene resins, polypropylene resins, epoxy resins, polyethylene resins, and mixtures of these.
Patent GB-534729-A (GB)
Title: Improvements in or relating to insertion device of prepayment-meters
IPC: G07F1/00
Filed: 1939-08-09
Abstract: 534,729. Prepayment mechanism for meters. SODECO SOC. DES COMPTEURS DE GENEVE. Aug. 9, 1939, No. 22961. Convention date, Aug. 20, 1938. [Class 27] In a multi-coin action for meters the coin g when inserted in the slot 1 raises a slot-closing slide 2 which raises a calibrating slide 5 set at an angle to the slot, the slide 2 being adapted to close the slot and lock itself independently of the position of the calibrating slide and the shaft 13 operated by the usual knob 12. The apparatus is shown adapted for coins of three different sizes. When the coin pocket is empty both slides are down, but when a coin is inserted the slide 2 is raised by pressure between the slide and a roller 7, and raises the slide 5 through a lug 33. The coin passes from under the slide 2, which drops behind it as shown in Fig. 3, and rests on a tipping stop 8 with the slide 5 resting on the coin. The slide 2 is now automatically locked in position to cover the coin slot by a detent 11. The coin is gauged by the slide 5 and if it is of one of the three prescribed sizes one edge of a T-shaped arm 17 will be opposite one of three apertures, g, m, p in the slide. Until a coin is inserted the opposite edge of arm 17 engages a recess in a disc 18 on the knob-operated shaft 13 and locks the shaft against rotation. If the knob 12 is rotated after a correct coin has been inserted one edge of the arm 17 enters one of the apertures in the slide 5, thus locking the slide, and frees the disc 18 to allow the shaft 13 to rotate. A friction clutch between the knob and the shaft, allows the knob to rotate if the shaft is locked by the insertion of a wrong coin. At the same time a cam 16 causes an arm 10 to engage over the slide 2 and lock the latter until the shaft 13 has made a complete revolution. During rotation of the shaft a cam 19 acts on a part 31 of the tipping stop 8 and tilts the latter so as to allow the coin to drop into the till. The part 31 also locks the slide 2, as shown in Fig. 3. When the shaft 13 has made a complete revolution the arm 17 is released and allows the slide 5 to fall. the projection 33 on the latter engaging an inclined face of the detent 11 and moving this arm to free the slide 2. If a coin of wrong dimen. sions is inserted the shaft 13 will remain locked by the arm 17, and the slide 2 will be locked in its slot-closing position by the detent 11. A handle 21 is provided whereby the coin stop 8 can be tilted to eject the unsuitable coin, the slide 2 being then released. Gearing of different ratios is provided as usual, each associated with a particular coin. In the example illustrated the slide 5 acts through a roller 24 and a lever 26, 25 on a sliding pinion 22, which is made to gear with one of three pinions. g'. m', p according to the size of the coin. Reverse rotation of the shaft 13 is prevented by a detent 14 engaging a star wheel.
Patent GB-692873-A (GB)
Title: Improvements in or relating to multi-leaf dampers
IPC: F24F13/15
Filed: 1950-09-20
Abstract: 692,873. Ventilators. STLTRTEVANT ENGINEERING CO., Ltd., and HARGRAVES, W. R. Sept. 20, 1951 [Sept. 20, 1950], No. 23066/50. Class 137 [Also in Group XXIX] A damper, e.g. for controlling air flow in a conduit, comprises strips 1, Fig. 1, on pivots 2 and :strips 1, Fig. 1, turnable on pivots 2 and interconnected by links 4, 5 whereby movement of a rod 3 causes simultaneous turning of the strips. The strips are of streamlined cross-section and alternate strips turn in opposite directions. In another arrangement, pairs of strips 6, Fig. 2, are pivoted on blocks 7 and movable by levers 8 on pivots 9, the levers being connected by arms 16 to a common actuating rod 17. Each lever 8 engages its pair of strips by pin and slot connections, and each strip presents a convex surface to the approaching stream. The rods 3 and 17 may be subjected to automatic control, e.g. by means of a thermostat or a humidistat.
Patent GB-1525836-A (GB)
Title: Screeding apparatus
IPC: E04G21/10
Filed: 1976-06-04
Abstract: 1525836 Concrete screeding apparatus E McMAHON 4 June 1976 [5 June 1975] 23077/76 Heading E1G A vibratory screeding beam comprises a pair of spaced parallel opposed channels 1 shaped as shown and connected by a cross member 7 supporting vibrating means 8.. 11. As shown the member 7 is a plate to which steel channels 1 are bolted to allow reversal after wear. Additional tubular cross members may be provided and the beam has a pair of handles at each end. The vibrating means shown comprises a spring-mounted motor 8 driving a shaft 10 having one or more eccentric means 11.
Patent GB-315593-A (GB)
Title: Improvements in or relating to tobacco pipes, cigar or cigarette holders
IPC: A24F1/00
Filed: 1928-08-10
Abstract: 315,593. Guingand, F. J. de, and Deguingand & Son, Ltd., E. Aug. 10, 1928. Tobacco pipes and cigar and cigarette holders. -Concentric tubes a, b extend from the bowl through the stem to seatings f, g to the end of the mouthpiece. The outer tube is of metal and is split for part of its length, while, the inner tube is of absorbent material.