baber/WOPTO huggingface dataset:
Patent GB-1344346-A (GB)
Title: Automatic battery charger injection devices
IPC: H02J7/00
Filed: 1971-06-15
Abstract: 1344346 Battery charging systems GLOBEUNION Inc 15 June 1971 [24 Aug 1970] 27885/71 Heading H2H Battery charging apparatus comprises a device by means of which the charging current is modulated in accordance with the terminal voltage of the battery between an intermediate and a maximum value thereof together with a further device dependent upon the charging current to terminate the charging current when the battery terminal voltage reaches the maximum value. A battery 12 is charged from a source 10 by way of a series connected transistor 40. When a normally discharged battery is connected to the apparatus the base bias for the transistor 40 developed by a resistor 48 is such that the transistor is fully turned on whereby the charging current is at a maximum value. As the battery terminal voltage increases during charging it is sensed by a series circuit including a Zener diode 50. When the battery terminal voltage reaches an intermediate value the Zener diode 50 breaks down the series sensing circuit begins to load the resistor 48 and as the battery terminal voltage increases the bias on the base of transistor 40 is lowered so that the charging current through the transistor is gradually decreased. The charging current is sensed by a network 77 such that when the battery terminal voltage has reached a maximum value and the-charging current a minimum value a transistor 70 cuts-off and a transistor 60 turns on. Turning on of the transistor 60 causes the base bias of transistor 40 to become such that transistor 40 turns off thus terminating the flow of charging current. A resistor 90 is so connected as to maintain a trickle charge and also to enable an abnormally discharged battery to be charged. In a second embodiment means are included to indicate a battery is being charged. In order to prevent hunting of the control system a means including a current sensing resistor 76 and a pair of transistors 70, 60 are provided, which means is effective to short circuit a resistor 54 in series with the Zener diode 50.
Patent GB-1245685-A (GB)
Title: Improvements relating to monitoring equipment for static rectifier installations
IPC: H02H7/127
Filed: 1969-06-03
Abstract: 1,245,685. Electric transformers. BROWN, BOVERI & CO. Ltd. 3 June, 1969 [5 June, 1968], No. 27925/69. Heading H1T. [Also in Division H2] A monitoring arrangement for an HVDC converter comprising a series string of semiconductor rectifier stages (see Division H2) includes a transformer having a plurality of primary windings 2 (Figs. 1 and 2) each toroidally wound on a respective annular core 3 and coupled to a common secondary winding 4 and common tertiary winding 7 contained within a U-shaped insulating sleeve 9 which is threaded through the core. The cores are pre-magnetized by a direct current through the tertiary 7 and to a level close to or at saturation level. The transformed primary voltages are aggregated in the secondary winding. An indicator 6 responds to the arithmetic mean of the secondary voltage and produces a warning signal at a certain limit value indicating that an excessive number of rectifier stages have failed.
Patent GB-1120381-A (GB)
Title: Improvements in or relating to the manufacture of aerodynamic structures
IPC: B64C21/06
Filed: 1964-07-07
Abstract: 1,120,381. Aircraft structures. HANDLEY PAGE Ltd. 7 July, 1965 [7 July, 1964], No. 27998/64. Heading B7W. [Also in Division F2] An airframe component such as a wing comprises a base structure which is subjected to simulated flight loads and its contour checked and corrected, before an outer skin is bonded to it. The base structure comprises panels of honeycomb sandwich 9, 12, sheet metal (35, Fig. 8, not shown) or metal plate (37) having thickened portions (38, Fig. 9, not shown). The wing described is adapted for boundary layer suction, a corrugated sheet 27 bonded to the panel forming collecting ducts communicating with bores in the panel. The outer skin comprises spanwise strips 10, adjacent strips having matching edges achieved by slitting metal panels, adjacent strips coming from adjacent parts of the panels. The gaps between the strips are of constant width or constant taper, and are bonded to spacer strips 17, the gaps between the strips 10 being aligned with the gaps between the strips 17 and the bores in the panels. In assembly, the strips 17 are screwed to jigs and the base structure is bonded to the strips 17. The jigs are removed, the structure is subjected to simulated flight loads and its profile corrected, and the outer skin strips 10 are then bonded to the spacer strips 17.
Patent GB-1391685-A (GB)
Title: Camping tent
IPC: E04H15/06
Filed: 1972-06-15
Abstract: 1391685 Convertible vehicles R CERCHIERINI 15 June 1972 [25 June 1971] 28090/72 Heading B7B [Also in Division E1] A tent adapted to be supported on a car roof or on posts, see Fig. 3 (not shown), comprises a rectangular base 18 on which inverted U-shaped frames 28, 30 are pivotally supported, the legs 32, 32<SP>1</SP>, 34, 34<SP>1</SP> of the frames in turn supporting a rotatable arrangement of spokes 46 as shown. The spokes may be telescopic and are connected to horizontal tubular members 60 or connected by means 48 to the members 28, 30 at the upper corners thereof. The tent may be folded flat and transported on the roof of the vehicle, see Fig. 1 (not shown). The roof covering may be pegged by guy ropes and a further sheet or sheets used to form the walls of the tent.
Patent GB-1023253-A (GB)
Title: Travelling-wave tube
Inventor: WINWOOD JOHN MORLAND
IPC: H01J23/42
Filed: 1964-07-08
Abstract: 1,023,253. Travelling wave tubes. MULLARD Ltd. July 8, 1964, No. 28162/64. Heading H1D. One or more end turns of the uniform helical slow wave structure H (Fig. 2, not shown) of a travelling wave tube are short-circuited by a conductor welded thereto to provide a matching section for coupling to a waveguide. There may be more than two of the spot welded platinum tape short-circuiting conductors A, B, and/or a single conductor may short circuit several turns of the helix.
Patent GB-321289-A (GB)
Title: Improvements in and connected with straw trussers
IPC: A01F15/14
Filed: 1928-10-02
Abstract: 321,289. Thomson, J., and Anderson, J. Oct. 2, 1928. Sheafing.-A tucker A pivoted on a knotter plate B has one edge A<1> of curved formation for the needle E to work on, the other edge A<2> being straight to carry the twine or string down till it is engaged by an adjustable string guide C. A spring D returns the tucker to its original position. Stops H, H<1> are provided to limit the movement of the tucker.
Patent GB-383376-A (GB)
Title: Improvements in telephonic receivers or speakers of the moving coil type
IPC: H04R9/04
Filed: 1931-10-13
Abstract: 383,376. Loud-speakers. LANCHESTER, F. W., Dyott End, Oxford Road, Moseley, Birmingham. Oct. 13, 1931, No. 28370. [Class 40 (iv).] The coil 3 of a moving coil loud-speaker is centred by rubber balls 4 arranged so as to be capable of rolling in recesse's or pockets 5 on the outside and/or inside of the coil. The recesses may be provided as shown in Fig. 2 in the outer pole 1, the opposed surfaces forming seatings for the balls being parallel to permit of a certain degree of free longitudinal movement. The ends of the recesses are closed by a location ring 6 and washer 7. As shown in Fig. 5, the recesses are formed in a nose piece 5a, the opposed surfaces of the seatings for the balls being concave so that the balls whilst allowing longitudinal movement at the same time exercise a certain degree of elastic restraint. Fig. 4 shows the invention applied to a loud-speaker in which the cone 8 is supported over a sound-passage bored in the central magnet pole 11 by ligatures 12 carried by pillars 13. Specifications 326,614, [Class 40 (iv), Telephones &c.], and 361,076 are referred to.
Patent GB-1041805-A (GB)
Title: Improvements in or relating to plate heat exchanger connections
Inventor: BOTHAM GEORGE HENRY
IPC: F16L23/028
Filed: 1964-07-13
Abstract: 1,041,805. Pipe connections. A.P.V. CO. Ltd. April 29, 1965 [July 13, 1964], No. 28879/64. Heading F2G. [Also in Division F4] A pipe 10 is connected to an apertured frame part 7 of a plate heat exchanger by a ring 11 and studs 12 and sealed by a flange 3 at one end of a lining bush 1. The other end of the bush is also provided with a flange 4 which is formed with a ridge 5 to co-operate with the upstanding rim 14 of the first plate 16. If the aperture in the frame part 7 is too large for the bush, a conversion liner 8 is placed in the aperture A ridge also may be formed on the flange 3. A stiffener ring 6 is provided to prevent collapse of the bush.
Patent GB-1183541-A (GB)
Title: Means for indicating and/or controlling turning movements
Inventor: PERSSON ERIK
IPC: G01D5/26
Filed: 1967-06-20
Abstract: 1,183,541. Measuring angular position photoelectrically. ALLMANNA SVENSKA ELEKTRISKA A.B. 20 June, 1967 [20 June, 1966], No. 28382/67. Heading H4D. [Also in Division G1] The angle of a turning object is determined by photo-electrically scanning the object in a plurality of parallel paths and observing the time elapsing between the moments when each scanning path coincides with a reference line of the object, e.g. its leading edge. A workpiece 13 being turned in a rolling mill is scanned in parallel lines 1-5 by five photo-cells 16 through a lens 15 in a rotating drum 11 and then in interlaced lines 1<SP>1</SP>-5<SP>1</SP> through a lens 15<SP>1</SP>. Each cell produces a pulse a when it encounters the leading edge of the workpiece and from these pulses are produced pulses b 1  and b 2  having predetermined delays chosen so that the pulses b 1  and b 2  will coincide with the a pulse of an adjacent photo-cell when the leading edge of the workpiece makes angles, α, of 10 and 30 degrees with a line transverse to the rolling track. The a, b 1  and b 2  pulses from detectors 1, 2, 3, 4 and 5 are applied to " AND " gates 19 as shown in Fig. 4, so that " OR " gate 20 gives a pulse when α=30 degrees and " OR " gate 20a gives a pulse when α=10 degrees. To avoid false indications at the corners of the workpiece, the signals from gates 20, 20a are fed to " AND " gates 21, 27 directly and through a delay circuit P so that gates 21, 27 only give outputs if " OR " gates 20, 20a produce pulses in successive interlaced scans. The speed of turning may be reduced when α=30 degrees and stopped when α=10 degrees, inertia being relied on to reduce α to zero. In a modification, servo systems keep the scanning device aligned with the workpiece and the angle of the workpiece is derived from the position of the scanning device.
Patent GB-1154033-A (GB)
Title: Improvements in or relating to Hedge Clippers
Inventor: FOWLER GORDON FRANKLIN
IPC: A01G3/047
Filed: 1965-07-05
Abstract: 1,154,033. Hedge clippers. G. F. FOWLER. 5 Oct., 1966 [5 July, 1965], No. 28413/65. Addition to 1,103,104. Heading B4B. [Also in Division A1] In a hedge clipping tool as set forth in the parent Specification, each blade member 10 is formed of a razor steel blade 13 and a reinforcing or backing member 16. The backing member is welded, soldered, or secured by rivets 15 to the blade. In a modification, Fig. 4 (not shown), the backing member comprises a fillet (19) of a plastics material and a metal strip (20) and forms with the blade member (10) a metal/plastics/metal sandwich. In other modifications, Figs. 5 to 8 (not shown), the blade (10) has an integral reinforcing member which may be a simple flange (21, Fig. 5), a double flange (22, Fig. 6), a rolled-over section (23, Fig. 7) or a trapezoidal member (24, Fig. 8). Alternatively, the integral reinforcing member may be a rib.
Patent GB-203931-A (GB)
Title: Improvements relating to trailing suction dredgers
IPC: E02F3/92
Filed: 1922-10-19
Abstract: 203,931. Lobnitz & Co., Ltd., (Robinson, A. W.). Oct. 19,1922. Suction apparatus of the type in which ploughing cutters act in advance of the trailing suctionhead has the cutters so mounted that any one or more of them can move out of the way when an obstruction is encountered. The suction head 4 carries a plate 9 extending from a detachable mouthpiece 8 to an upper flange 6 and fitted with brackets 11 between which the cutters 12 are independently pivoted, preferably in staggered relation as shown. The cutters bear against members 16 of hard wood or like material adapted to shear under pressure due to an obstruction, whereupon the cutters swing upwardly through openings 17 in the plate 9 into compartments 14 formed in the space between the plate 9 and the wall 10 of the suction head.
Patent GB-648662-A (GB)
Title: Improvements in and relating to contact bases for tubular electric lamps
IPC: H01J5/60
Filed: 1948-11-02
Abstract: 648,662. Lamp caps. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 2,1948, No. 28431. Convention date, Nov. 5,1947. [Class 38 (i)] A base 10 for a tubular lamp 1 having a closed configuration, comprises a split sleeve, whose parts 11, 12 are provided with end recesses 19 for the lamp ends 2, 3, and a circumferential slot 24 from which project the contact pins 25, 26 carried by a cylindrical member 13 rotatable within the sleeve within limits defined by the slot, while the sleeve is prevented from rotating by a protuberance on a lamp end engaging in a recess 20 in the sleeve part 11. The pins 25, 26 are connected in pairs to flexible leads which project from the lamp ends and the pairs are isolated by a partition 32 on the member 13 which has a protrusion 28 on which the pins 25, 26 are mounted. Dowel pins 18 are provided on the sleeve part 11 to align it with the part 12, both parts being retained on the lamp by spring clips 14, 15. Specifications 560,244 and 628,535 are referred to.
Patent GB-948616-A (GB)
Title: Improvements relating to textile machines
Inventor: HILL MOORE
IPC: D01H5/62
Filed: 1959-08-20
Abstract: 948,616. Cleaners for drafting rollers. JAMES MACKIE & SONS Ltd. Aug. 11, 1960 [Aug. 20, 1959], No. 28526/59. Heading D1D. A drafting-roller, e.g. in a gill spinning frame, has a narrow scraper blade 4, Fig. 2, mounted below it to extend obliquely to its axis and shaped to conform with the roller surface against which it is resiliently pressed by springs 7 on counterweights. Dirt &c. removed from the roll-surface is caused by the inclination of the blade to travel to one end where it drops off behind the drafting- roller. When the roller is wide several overlapping blades may be used. The scraper may take the form of a trough-like component Fig. 4, with blades 16,17.
Patent GB-860482-A (GB)
Title: Improvements in or relating to headlamp arrangements in vehicles
IPC: B60Q1/00
Filed: 1957-09-11
Abstract: 860,482. Vehicle head-lamps. POPELAR V., and VYROUBAL, L. Sept. 11, 1957. No. 28648/57. Classes 75 (3) and 75 (4). [Also in Group XXXII]. The head-lamps of a vehicle are mounted within the vehicle body behind a transparent cover 3 closing a central opening in the streamlined frontal body portion 1 symmetrical of the longitudinal axis of the body and following the shape of the frontal body portion and being aerodynamically shaped in plan. The diffuser glass 3 is inserted by means of a rubber seal 2. The head-lamps casings 5 are mounted on the vertical wall 4 by screws 6 and have removable rear sealing caps 7 to give access to the lamp bulbs 8. The adjustment of the beam of light is effected from the interior of the vehicle by screws 9 which carry the reflectors 11 through rubber washers 10. The diffuser glass 3 maybe replaced by clear glass and the diffused glass may be used for the reflector protective glasses 12.
Patent GB-1207181-A (GB)
Title: Improvements in or relating to the production of polyvinyl aromatic compositions
Inventor: SQUIRE JOHN MANSEL
IPC: C08F279/02
Filed: 1967-06-22
Abstract: 1,207,181. Toughened vinyl aromatic polymers. BRITISH PETROLEUM CO. Ltd. 29 May, 1968 [22 June, 1967], No. 28800/67. Heading C3G. A toughened vinyl aromatic polymer composition is produced by dissolving a preformed vinyl aromatic homopolymer and rubber in a monomeric vinyl aromatic compound, suspending the resulting solution in water, subjecting the resulting suspension to polymerizing conditions whereby the monomeric vinyl aromatic compound is polymerized and recovering toughened polyvinyl aromatic composition. Specified rubbers are polybutadienes styrenebutadiene random and block copolymers and ethylene-propylene copolymers. Suitable vinyl aromatic monomers are styrene, o- and p-mono -  chlorostyrenes, dichlorostyrene and vinyl toluene. In the example, a solution of polystyrene in styrene is blended with a solution of polybutadiene in styrene and dicumyl peroxide and butyl stearate are added to the blend, which is then suspended in an aqueous medium and polymerized.
Patent GB-638892-A (GB)
Title: Surgical instruments
IPC: A61B19/00
Filed: 1947-10-30
Abstract: 638,892. Obstetric appliances. ALFORD, A. A. Oct. 30, 1947, No 28993. Convention date, Oct. 31, 1946. [Class 81(ii)] A surgical instrument for episiotomies comprises an elongated scalpel-and-suture guide 3, a shielding element 2, and means for drawing and releasing the sutures after insertion. With the instrument in position, sutures are inserted through the skin and passed between elements 2 and 3: the incision is then made along the line of the guide 3, which is troughshaped, and the instrument is then withdrawn, the suture loops being pulled by a hook 6 formed at the end of the guide 3, and the instrument is then removed. After the delivery the sutures are drawn tight and tied off in the normal manner.
Patent GB-1103713-A (GB)
Title: Toggle press
IPC: B30B1/14
Filed: 1965-07-08
Abstract: 1,103,713. Toggle presses. MAY-PRESSENBAU G.m.b.H. 8 July, 1965 [21 July, 1964], No. 29026/65. Heading B5F. A toggle press comprises a long lever 30 pivoted at 34 to the press frame and at 45 to a short lever 50 which is pivoted at 49 to a plunger 20, the long and short levers forming an acute angle between them. The common pivot point 45 of the two levers is connected by a rod 60 to a crank 67 driven through gearing 73, 75, 76, 78.
Patent GB-789908-A (GB)
Title: Improvements in method of bright forming metal
IPC: C23C22/80
Filed: 1955-10-13
Abstract: In the cold-forming of metals in which the metal surface is phosphated prior to the forming operation, the surface is pretreated, before being phosphated, with an aqueous solution containing at least 1/8 oz. per gallon of a composition comprising disodium phosphate and at least 0.005 per cent titanium.  The pre-treatment solution may contain conventional surface-active agents and alkaline cleaning agents such as silicates and phosphates preferably tetrasodium pyrophosphate. The phosphating solution may be of the heavy metal, or alkali metal or ammonium phosphate type.  The example refers to the forming of deep dishes by drawing steel blanks in which a phosphating solution containing Zn, P2O5 and HNO3 was used and in which the phosphated surface was lubricated using a conventional drawing lubricant.  Other cold-forming operations referred to are stamping and rolling. Specifications 560,847, 560,848 and 584,537 are referred to.
Patent GB-1515089-A (GB)
Title: Device for measuring temperature
IPC: G01K11/125
Filed: 1976-07-14
Abstract: 1515089 Measuring temperature photoelectrically V M KRYLOV J A KOMAROV D V PANCHENKO V P SELJUTIN and N S LIDORENKO 14 July 1976 [22 July 1975]  29286/76 Heading G1A Temperature-measuring apparatus comprises a temperature-sensitive element 1 Fig. 3 constituted by a plate 6 of semi-conductor material having a steep absorption characteristic I, II, Fig. 2 at the wavelength III of a monochromatic light source, one side 8 of the plate 6 Fig. 3 having a reflective coating 9, the other side of the plate 6 being rigidly attached (e.g. by epoxy resin) to one end of a fibre-optic light guide 2 Figs. 3 and 1, whose other end 11, 12 is connected to the source 5 and to a photo-detector 3. The coating 9 is an aluminium film applied e.g. by vacuum or electrolysis. An infrared Ga-As diode source 5 may be combined with an indium phosphide plate 6; or a Ga-As laser 5 with a Ga-As plate 6. The curves I, II, Fig. 2, represent the edge of the semi-conductor absorption curve at normal and elevated temperatures respectively.
Patent GB-159318-A (GB)
Title: Tunnelling machine
IPC: E21D9/10
Filed: 1919-11-25
Abstract: 159,318. Bicknell, R. H. Nov. 25, 1919. Tunnelling by boring .-A tunnelling-machine comprises an outer shell moving clear of the tunnel wall on rollers &c., an inner shell with no axial displacement relatively to the outer member, rotatable arms carrying tools and arranged within the inner shell, and means for picking up and carrying away the debris. The machine shown in plan comprises an outer shell 1 supported on rubber-faced rollers which are adjustable for steering purposes and have ratchet or other means for preventing back-running. The shell .is advanced by means of suitably-driven lateral barrel-shaped rollers 7. Within the shell 1 is a rotatable inner shell 3 driven through an internal gear 20 and carrying radial arms 4 to which abrading &c. tools 5 are connected, as by interrupted threads, scoops 6 for raising the debris, and brushes for preventing the passage of debris below the outer shell. The inner shell is supported on rollers 28 and is braced by adjustable rubber-faced rollers bearing against its rear end. A centre drill may be provided and the tools, driving motor, and advancing means may be driven by hydraulic wave transmission. A platform 25 secured to the outer shell projects within the inner shell and carries a hopper 26 to which the scoops 6 deliver debris. Water is delivered to the hopper by a main 27 and is forced to a discharge pipe 33 by one of a series of pumps 30, 31, a slide valve 32 being adjusted to connect the hopper with the acting pump ; if all the pumps break down, a valve 35 is adjusted to short-circuit the water in the pipe 27 to the discharge pipe. In a modification, the advance is effected by a screw abutting against a rear cross-beam and engaging a nut driven through worm gearing and carried by a wheeled truck provided with adjustable arms carrying cams which engage the sides of the tunnel to hold the truck against rearward movement; the rear part of the screw is protected by a tubular casing and the front part by an extensible cover of fabric &c.
Patent GB-464784-A (GB)
Title: Method of and means for charging high-speed rotary furnaces
IPC: F27B7/32
Filed: 1935-10-24
Abstract: 464,784. Rotary furnaces. ZOTOS, G. Oct. 24, 1935, No. 29385. Convention date, April 23. [Class 51 (ii)] Charging.-In a rotary melting furnace 1 in which, as described in Specification 300,576, [Class 51 (ii)], the molten material is maintained by centrifugal force as a cylinder 2 lining the wall of the furnace, each charge is delivered eccentrically of the furnace at the descending side thereof and is spread along a substantial portion of the inner surface of the cylinder 2. In the form shown, the charging apparatus employed comprises an elongated trough 6 rotatably mounted on a wheeled carriage 8 outside the furnace; other forms of charger may be used such as a worm conveyer, a mechanical projector, or a tube adapted to be introduced into the furnace and then withdrawn over a stationary plunger.