baber/WOPTO huggingface dataset:
Patent GB-1399594-A (GB)
Title: Inverter circuits
IPC: H03L1/00
Filed: 1971-05-27
Abstract: 1399594 Automatic voltage regulation JOSEPH LUCAS (INDUSTRIES) Ltd 25 May 1972 [27 May 1971] 17613/71 Heading G3X [Also in Division Fl and H3]  A free running inverter circuit comprises a transformer 10 having a secondary winding 11 from which an A.C. output is obtained, a primary winding 12 which is divided into two portions, switch means 26 through which one end of each of the two portions 12 of the primary winding are connected in operation of the circuit alternately in turn to one 13 of a pair of terminals 13, 14 for connection to a D.C. supply, a pair of saturable reactors 15 having a common control winding 16, each reactor 15 having a pair of windings through which the other ends of the two portions of the primary winding are connected to the other of the terminals 14 and means 21, 23 for adjusting the current flowing in the control winding 16 in accordance with the variations in the voltage of the D.C. supply to minimize the variation in the A.C. voltage developed in the secondary winding 11 of the transformer. With the minimum D.C. supply voltage 13, 14 the current flowing through the control winding 16 is arranged to saturate the cores of the reactors 15 so that there is little inductance in series with the primary windings 12. Zener diodes 21 and resistors 23 are connected across the D.C. supply and as the supply voltage 13, 14 increases, the current through the control winding 16 decreases so that the cores of the reactors 15 become de-saturated. The impedance of the reactors increases so that the output voltage across the secondary winding 11 remains constant. The invertor may be used in spark ignition apparatus. When the voltage across the capacitor 22 reaches a certain value spark discharge device 25 breaks down and the capacitor 22 discharges across the spark gap 24.
Patent GB-1464949-A (GB)
Title: Method and apparatus for manufacturing reducing gas
IPC: C21B5/00
Filed: 1974-04-23
Abstract: 1464949 Reducing-gas production NIPPON KOKAN KK 23 April 1974 [23 April 1973] 17665/74 Heading C5E In a method of manufacturing reducing gas in a slag tap furnace 1 by gasification of carbonaceous fuel 20 using steam and oxygen blown in through tuyeres 3, the heat content of the gas produced is increased by the injection of a liquid material of high calorific value into the furnace through one or more nozzles 6; the resulting gas is discharged through line 8, and the molten slag 1 run off through tap opening 13. The injected liquid material may be a heavy oil or asphalt, in which case it will be preheated in a furnace 5 and then blown by a pump 17, together with steam and oxygen, into the furnace 1. Alternatively plastics waste may be used, in which ease the melting furnace 5 is replaced by the arrangement shown in Fig. 2. Plastics waste likely to evolve chlorine, e.g. vinyl chloride, is heated to remove HCl and chlorine content in a pretreating furnace 15 before being charged into the melting furnace 16 with other waste plastics, and the melted plasties then being injected into the furnace 1. The nozzles 6 are situtated in the region of the furnace in which the carbonaceous fuel is at a temperature of 600-1200‹ C. The gas taken off through line 8 is passed through a dust remover 9 and the dust thus removed, consisting of tar, aromatic hydrocarbons and carbon, is dehydrated in water separator 11, mixed with fuel oil to form a slurry, and blown back into the furnace 1, by slurry pump 12, through tuyeres 3. The carbonaceous fuel may be coal, coal briquettes or coke, or a mixture of coal or coke.
Patent GB-1392137-A (GB)
Title: Towel dispensers
IPC: A47K10/28
Filed: 1973-04-12
Abstract: 1392137 Towel dispenser STEINER CO LAUSANNE S A 12 April 1973 17673/73 Heading A4G A towel cabinet has an upper casing 2 enclosing a storage chamber for a used towel roll 55, a trough-shaped lower casing 3 having at least one light-transmitting end-wall and providing a storage chamber for a clean towel 40, slots 50, 54 towards the front and back of the cabinet for allowing a loop of towel 51 to hang slackly around the casing 3, a towel dispensing mechanism responsive to one run of the slack loop being pulled down to feed a predetermined length of clean towel from the chamber 3 into the loop and to return the same length of towel from the loop to the upper chamber 2, and means whereby the cabinet can be opened to allow towel replacement. As described, the cabinet has a rear wall 10 for attachment to a wall and a pair of side walls. The casing 2 is pivoted at 17 to the wall 10 and can be locked to the side walls by slidable bolts. The side walls also mount guide rollers 13-15 and a used towel roller 16. The casing 3 is moulded from shaded transparent polycarbonate material and includes a rod the end portions of which can slide between guide ribs 60, 61 provided at the lower edges of the side walls so that when the casing 2 is raised the casing 3 can be slid forwardly from the solid line position and tilted to the dot-dash line position for removal of a used towel roll and insertion of a clean roll.
Patent GB-595964-A (GB)
Title: Improvements in or relating to suction cleaning apparatus
IPC: A47L11/206
Filed: 1945-07-11
Abstract: 595,964. Suction cleaners. FILLERY, G. T. July 11, 1945, No. 17731. [Class 8 (i)] [Also in Group XXIII] A suction cleaner comprises a suction nozzle, a floor-polishing element and means for tilting the cleaner so as selectively to bring either the nozzle or the polisher into the on-the-floor position at will. The polisher comprising a pair of oppositely rotating brushes G, Fig. 3, resiliently mounted on a lateral plate G<2> and driven by a friction disc F carried by a motordriven fan spindle D<2> is arranged in tandem with the nozzle B'. The nozzle opening B<2> lies in a plane inclined at an angle P to that of the brushes, and is provided with a hinged telescopic mouth M to evacuate dust raised by the polisher. The cleaner is supported on a pilot roller K carried by a spring-loaded hinged strut K<1> and rollers H about which the cleaner is tilted by manual depression of spring K<4>. A nose K<6> wedges the periphery of the brushes and thus disengages them from the driving disc F. In a modification, brushes R<3>, Fig. 7, are rotated by spring-pressed ball-jointed stub axles N<1> of tapered clutch members R<2> which in turn are driven by a friction wheel R. A pair of pilot rollers T, Fig. 8, when operated by a toggle lever T<3> raise the brushes from the floor, and springs R<6> move the clutches R<2> out of engagement with the disc R,. The nozzle may be provided with an agitator.
Patent GB-692001-A (GB)
Title: Improvements in or relating to ultrasonic inspecting devices
IPC: G01N29/38
Filed: 1951-07-26
Abstract: 692,001. Ultrasonic inspection devices. SPERRY PRODUCTS, Inc. July 26, 1951 [Aug. 3, 1950No. 17746/51. Class 118 (ii) Relates to pulse echo supersonic flaw detectors employing a common transmitting and receiving electric-acoustic transducer and a cathode-ray tube indicator and having a relatively low pulse recurrence frequency, e.g. 60 c/s, and a correspondingly long pulse recurrence period, e.g. 16,000#, in which echoes of interest occur only during a small initial portion of the recurrence period, e.g. in the first 100# thereof, the receiver being rendered operative only during said initial portion. According to the present invention, the brightness of the display is increased by applying the echo signals received during the raid initial portion to a delay loop circult, having a delay time equal to or greater than the duration of said portion, the loop output being applied to the cathode-ray tube signal plates and to synchronise the time-base so that the wanted echoes are applied repeatedly to the tube during the normally inoperative portion of the recurrence period. As shown, a transducer 12 is coupled to the output of a transmitter pulse generator 11 and to the input of a receiver 20 whose output is applied through a first gate 30 to the delay loop which comprises a mercury or magnesium acoustic delay line 50, amplifier 51 and a second gate 40, the amplifier output being also applied to the Y plate 21 of a cathode-ray tube 22 and to synchronise the sweep generator 25. The transmitter 11 is triggered by generator 10 which also triggers a short-pulse generator 31 (duration of output pulse equal to said initial portion of recurrence period) and a long-pulse generator 41 (duration of output pulse slightly less than recurrence period), the output from generator 31 being applied to gate 30 and the output from generator 41 being applied to gate 40 and to sweep generator 25 so that the circulation of signals in the delay loop is stopped just prior to transmission of a pulse and the sweep generator is operative only within the duration of the long gate pulse.
Patent GB-624348-A (GB)
Title: Improvements relating to apparatus for drying grasses, shredded vegetables or roots,peat, and the like
IPC: F26B17/26
Filed: 1947-07-07
Abstract: 624,348. Grass or vegetable drier. GOODALL, C. July 7, 1947, Nos. 17836 and 31283. [Class 34(ii)] Apparatus for drying grass &c. consists of a heated plate a on which the grass is placed and one or more units in tandem which reciprocate longitudinally of the plate, squeezing and advancing the grass. Each unit consist of a roller e and a rotary perforate member i on which radial blades k are pivotally mounted. The blades abut stops t when the drum rotates in one direction and slide on the grass in the reverse direction, thus advancing and agitating the grass. The rotating member may be rotated at varying speeds and in either direction, but is preferably rotated contra-wise to the rotation of the roller and faster than the roller. The blades act like a fan and cause a current of air to circulate through the perforations, thus assisting the drying action. According to one embodiment, the roller is hollow and perforate, Fig. 5, and a suction pipe 14 arranged at the bottom adjacent to the inner wall of the roller removes excess moisture from the grass and deposits it behind the roller.
Patent GB-673978-A (GB)
Title: Improvements in or relating to domestic toasting appliances
IPC: A47J37/08
Filed: 1949-07-07
Abstract: 673,978. Electric toasters. WILLIAMS, F. R., and EASIPOWER, Ltd. July 7, 1950 [July 7, 1949], No. 17923/49. Class 28 (i). A toaster comprises a base, a casing formed in two separate parts 34, 35 mounted in spaced relationship on the base, each part housing a heating element 20 only one side of which is exposed, the space between the exposed surfaces of heating elements constituting a toasting chamber, a pivotally mounted supporting platform 29 for the bread &c. at the bottom of the toasting chamber and a handle 31 connected to the platform 29 operable to tilt the platform and eject the bread &c. The base may comprise feet 10, 10' moulded from synthetic resin and a base plate 11. Wires 24 support and guard the elements 20. Current is led through the cable 16 and passes through the heating elements in series. Gas may be used instead of electricity. The Provisional Specification states that the number of elements may be increased so that more than one article may be toasted at the same time
Patent GB-548068-A (GB)
Title: Improvements in or relating to machines for cleaning animal intestines
IPC: A22C17/16
Filed: 1940-12-22
Abstract: 548,068. Cleaning intestines. STEPHENSON, J. Dec. 22, 1940. No. 18006. [Class 28 (ii)] The invention is concerned with machines for cleaning animal intestines which are to be used, e.g., as casings for foodstuffs, of the type in which the intestines are led to adjustable cleaning and. drawing rollers 6, 8, 9, these rollers being each in the form of a sleeve rotating around a fixed spindle. According to the invention, means for adjusting such a roller comprises two bearings 12 in which the ends 18 of the spindle are rigidly mounted, each bearing being pivoted on a fixed bolt 14 and being secured in its adjusted position by a nut 16 threaded on a'fixed pin 15 passing through an arcuate slot 13 in the bearing. The spindle 18 may be axially bored for passage of lubricant.
Patent GB-714653-A (GB)
Title: Hot extrusion process
IPC: B21C35/04
Filed: 1952-07-16
Abstract: 714,653. Extruding. COMPTOIR INDUSTRIEL D'ETIRAGE ET PROFILAGE DE METAUX. July 16, 1952 [Aug. 22, 1951], No. 18028/52. Drawings to Specification. Class 83 (4). In an extrusion process on highly valuable metal, a wafer of a less-valuable metal is placed at the rear of the billet to reduce the amount of billet metal in the discard. The wafer may be welded to the billet, or separate therefrom and heated to a temperature below that of the billet, and may decrease in thickness from the edge to the centre. Any lubricant may be used and the discard is severed from the extrusion after the die and die-holder have been removed from the container. In extruding stainless steel tubes, the wafer is a soft steel annulus.
Patent GB-1467196-A (GB)
Title: Photogrpahic apparatus
IPC: G03B17/52
Filed: 1975-04-30
Abstract: 1467196 Self-processing cameras POLAROID CORP 30 April 1975 [2 May 1972 (2)] 18028/75 Heading G2A In a self-processing camera, in which processing composition contained in a pod 76 is spread between the image-receiving and photo-sensitive sheets 70, 72 of an exposed film unit as they pass between pressure rollers 44, 46 and then out of the camera through an exit opening 82, an opaque curtain 88 moves with the film unit to cover it for a predetermined distance beyond the opening. This prevents light from falling on any part of the transparent image-receiving sheet which is external of the camera and being conducted by internal reflection to an unprocessed part of the unit which is still within the camera. As shown, the opaque curtain is in the form of a roll 88, normally occupying the rolled-up position of Fig. 2. Against this rests a resilient tab 96. As the processed film unit passes from the rollers 44, 46, its leading edge engages and deflects tab 96, and then engages and unrolls the curtain 88. This unrolls and lies along the top surface of the film unit, until it has been completely unrolled. The leading edge of the film unit then disengages from the blind just as its trailing edge is about to leave the rollers 44, 46 (position of Fig. 4). On further movement of the unit, the curtain rolls itself up again Fig. 5 (not shown), and since the trailing edge has left the rollers, it is now releasably held between tab 96 and curtain 88.
Patent GB-381152-A (GB)
Title: Method and apparatus for joining woven wire fabric
IPC: B23K3/08
Filed: 1931-06-22
Abstract: 381,152. Wire-cloths for papermaking machines. BUCHANAN, J. R. and CRAY, T. M., 24, Hamilton Avenue, Ottawa, Canada, June 22, 1931, No. 18083. Convention date, April 22. [Class 96.] The ends of woven wire fabrics for papermaking machines &c. are joined together by inserting portions thereof in the space 39, Fig. 3, between clamping-members 33, 34 and the plane upper surface 11 of a slotted base 10 carrying a supporting structure B comprising a web 16 having plates 17, 18 forming guiding channels for arms 21, 22 connected by threaded shafts 37, 38 to the clamping-members 33, 34 A threaded shaft 27 extending into the top plate of the structure B can be turned by a member 28 to operate a cross yoke 26 and toggle links 25 connected to bifurcated lugs in the arms 21, 22. The free ends of sections of the fabric to be joined are positioned over the slot 12 and the sections are then gripped by turning the shafts 37, 38 and lowering the members 33, 34, which are thereupon moved laterally towards one another by turning the shaft 27 until the free ends of the sections A of the fabric abut against each other, the parts of the fabric not gripped being spaced apart by a rib 15 on the structure B. The abutting ends of the fabric are then united by welding, brazing, or soldering, a chamber 13 below the slot 12 allowing for the escape of heat. The operation is repeated along the length of the free edges of the fabric until they are completely joined. Instead of moving both arms 21, 22 laterally, one may be kept stationary and apparatus wherein this is done is described.
Patent GB-745083-A (GB)
Title: Welding tools
IPC: B23K9/02
Filed: 1953-06-30
Abstract: 745,083. Welding by fusion. GRAVER TANK & MFG. CO., Inc. June 30, 1953 [July 1, 1952], No. 18148/53. Class 83 (4). [Also in Group XXX] Apparatus for submerged arc welding on stationary vertical plates includes a carriage, movable along the plates, carrying an electrode, flux supply means and means for supporting the flux adjacent the vertical plates during welding which comprises a horizontally moving endless belt pressed at its lower edge against the vertical plates so as to be driven thereby as the carriage moves, the belt having adjacent its lower edge, on the inside, a longitudinally extending rib which is engaged by the means pressing the belt against the work. A carriage C travelling along the top of tank shell S under construction supports on a cross rod 34 between depending bars 33, a chassis 32, hooked at 35 over the cross rod 34, which in turn supports at its lower end on a vertical pivot pin 31 a frame 30. Around large horizontal end pulleys 26, 27 journalled in the frame 30 is guided the lower edge of an endless flux supporting belt 20. The inside of the belt, adjacent its lower edge, has formed integral therewith or secured thereto a longitudinal rib 21 which is engaged by spring-urged rollers 36 carried by the frame 30 to press the lower edge of the belt against the vertical wall of the tank S. A sealing strip 23, Fig. 13, may be secured to the outer part of the lower belt edge. The upper and central parts of the run of the belt adjacent the work which support the flux F are flattened by a roller 42 on the frame 30 to lie on a supporting tray 28 secured to the frame 30. The other run of the belt is also supported by a tray 46 and tensioned by a roller 47 engaging the rib 21. The belt may be frusto-conical in shape, Fig. 16. Flux is fed to the belt by a pipe D and electrode material N fed from a supply 50 carried by the chassis 32. Reference has been directed by the Comptroller to Specification 669,890.
Patent GB-1433527-A (GB)
Title: Camera capsule
IPC: H04N7/18
Filed: 1973-04-16
Abstract: 1433527 Camera capsule P P PEARL and D M BLACKSHEAR 16 April-1973 [17 April 1973] 18159/73 Heading G2J A housing for supporting and enclosing a camera and a camera support means (18, 19, 20) so that the camera can rotate about a vertical axis and/or tilt about a horizontal axis comprises an opaque base portion (25) surrounding at least a major portion of the support means and defining a downwardly facing opening, a generally transparent cover (26) hinged to the base portion adjacent the opening and movable between (a) a position where the base portion is open and the camera and support means are physically exposed and (b) a position where it closes the opening with its con-  cave surface facing the base portion and surrounding at least a lower portion of the camera whereby, in use, the camera is movable within the housing to an infinite number of positions with its lens facing the transparent cover, the cover being coated generally uniformly on its concave surface with a reflective substance (e.g. chromium) of sufficient thickness to reflect a portion of the light from outside the housing so that the camera is normally substantially invisible from outside the housing. For adverse lighting conditions the camera may be further shielded from view by an apertured dome (45) or an external vane assembly (49).
Patent GB-939949-A (GB)
Title: Fluid-filtering apparatus
Inventor: WESTWOOD HERBERT WILFRED
IPC: B01D35/22
Filed: 1961-05-18
Abstract: 939,949. Filters. PHILIPS ELECTRICAL INDUSTRIES Ltd. May 18, 1961, No. 18167/61. Class 46. [Also in Group XXVIII] Liquid is drawn into a cylindrical casing 1 up a pipe 7 having an open upper end 10 on to which screws a tube 16 whose lower end clamps the periphery of a hole in a filter bag 4. The bag is accommodated in a perforate basket 3 which has at its centre an upstanding tube 18. The liquid discharges into an annular recess 6 in the lid 2 and emerges therefrom turbulently to inhibit accumulation of residue on the upper part of the bag. In Fig. 2, the inlet pipe extends downwards through the lid 2 and ends in nozzles 22. Alternatively the nozzles may be tangential to a circle concentric with the casing axis. Filtrate passes through perforations (not shown) in a member 8 and out at 24,
Patent GB-334941-A (GB)
Title: Improvements in or relating to wire spoke wheels
IPC: B60B1/02
Filed: 1929-06-13
Abstract: 334,941. Pugh, J. V. June 13. 1929. Hand-wheels.-In tangent-spoke wheels, such as vehicle wheels, steering-wheels, and pulleys, in which the wire spokes have headed outer ends and threaded inner ends to engage aligned holes in rim and hub elements respectively, the rim is formed of thin metal with cupped holes to take the spoke-heads, the inner ends of the spokes being screwed directly into the hub or into solid ring members concentric with the axle. The initial tensioning of the spokes may be effected by the screwing-up operation, and the final tensioning by relative axial displacement of the rim and hub elements as described in Specification 320,408, [Class 144, (i), Wheels for vehicles], or of separate ring members carrying the inner ends of the spokes. Fig. 7 shows a steering-wheel in which a channel-section rim b is connected to a hub c, of cylindrical or rectangular form, by two sets of spokes a, ax. The hub may be of relatively small dimensions so as to provide resiliency in the wheel. Specification 304,624, [Class 144 (i), Wheels for vehicles], is referred to.
Patent GB-1453553-A (GB)
Title: Nachor
IPC: B63B21/44
Filed: 1975-05-01
Abstract: 1453553 Anchors C A MCDOWALL 1 May 1975 18224/75 Addition to 1390790 Heading B7S The two flanges on the tips of the two flukes of the anchor described in Specification 1,390,790 (see Division B7) are replaced by two tripping elements shaped either as shown in Fig. 2 with two limbs 218, 219 or in the form of flat circular discs (Fig. 1, not shown).
Patent GB-477537-A (GB)
Title: Friction gearing
IPC: F16H61/662
Filed: 1936-07-01
Abstract: 477,537. Variable - speed gearing. SVEDA, V. July 1, 1936, No. 18307. Convention date, July 3, 1935. [Class 80 (ii)] The driving shaft carries an expanding wheel 3, 4 engaging a ring of balls 11 which rotate in a stationary cage 12 and thus drive a pair of races 7, 8 connected to the casing 6 on the driven shaft 2 by balls 13 located in converging channels 14 between the outer faces of the races 7, 8 and the casing 6. Axial pressure developed by the balls 13 presses the races 7, 8 together, thus forcing the balls 11 inwardly and separating the parts 3, 4 of the expanding wheel against-the. action of springs 5. The position of the balls 11 on the bevelled surfaces 9, 10 of the gear members 3, 4, 7, 8, and hence the gear ratio is thus determined automatically by the torque in the driven shaft. To reduce the pressure on the balls 13, two gear arrangements as described above may be arranged in parallel.
Patent GB-347530-A (GB)
Title: Water cock for lavatories and the like
IPC: F16K31/62
Filed: 1930-06-16
Abstract: 347,530. Stop valves ; accessories or components. POT, C., Slikkerveer, near Rotterdam, Holland. June 16, 1930, No. 18375. Convention date, Aug. 22, 1929. [Class 135.] Diaphragm valves; actuating mechanism; independently-actuated supplementary valves.-A watercock for lavatory basins consists of a diaphragm valve 9 normally held closed by a spring 3 acting through a pedal lever 6 and opened by fluid pressure when the pedal is depressed. A guard 1, 5 prevents the lever from being held down for prolonged periods. A supplementary screw-down valve 16 provides for adjustment of supply pressure and for cutting off the supply for repairs.