baber/WOPTO huggingface dataset:
Patent GB-1319302-A (GB)
Title: Laser-cooling system
IPC: H01S3/04
Filed: 1970-06-29
Abstract: 1319302 Lasers HUGHES AIRCRAFT CO 29 June 1970 [28 July 1969] 31448/70 Heading H1C A liquid or compressed gas coolent is circulated by an impeller 60 between a laser cavity 14 and a heat exchanger formed as an integral part of the laser structure. As shown the laser cavity contains a laser rod 62, an elongate pumping flash lamp 64 and a reflector 16, and is formed in a housing 12 in which ducts 18, 20 provide a circulatory path for the coolant between the laser cavity and the heat exchanger. Fins 42 are provided on the housing for dissipating the heat extracted from the coolant by the heat exchanger. The impeller drive motor 54 is disposed in a cylinder 48 within the heat exchanger, and the coolant is circulated through a longitudinally corrugated fin structure 53 secured between the cylinder 48 and an outer cylinder 50. The housing includes inlet and outlet coolant valves 25, 23 and a pressure relief valve 32. A removable cover-plate 80 provides access to the laser cavity for replacing the flashlamp 64 or the reflector 16, and includes a window 82 coupling the laser rod with a Q- switching module 83 comprising a polarizer, a Pockel's cell and a reflector. Also included within the housing is a trigger transformer 40 for the flashlamp. In a modification, Fig. 2 (not shown), air is circulated over the finned surface of the heat exchanger by a further impeller. An alternative circulation system is shown in Fig. 3 in which the coolant is caused to flow transversely of the laser rod and flashlamp 212, 214 by an impeller 218 located in the heat exchanger 216. The circulated coolant, may be water, a fluorocarbon liquid, or air, argon, helium or nitrogen, the gas preferably being compressed to between 10 to 30 atmospheres.
Patent GB-428387-A (GB)
Title: Improvements relating to the projection of light
IPC: F21V7/00
Filed: 1933-11-13
Abstract: 428,387. Floodlight &c. lamps. EDISON SWAN ELECTRIC CO., Ltd., 123, Queen Victoria Street, London, and WHEAT, H. C., Bloxham, West Drive, Harrow Weald Park, Middlesex. Nov. 13, 1933, No. 31592. [Class 75 (iv)] In a floodlight or like lamp comprising a point source of light and a pair of projectors adapted to project parallel beams, the projectors are so arranged that their foci do not quite coincide and the light source is adjustable between the foci. In the form shown, the light source is adjustable between the foci 3, 4 of a pair of truncated parabolic reflectors 1, 2 having a common axis AA.
Patent GB-446630-A (GB)
Title: Improvements in or relating to circuit-arrangements comprising a gasfilled electric discharge tube
IPC: H05B41/04
Filed: 1935-11-15
Abstract: 446,630. Discharge devices. NAAM LOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. Nov. 15, 1935, No. 31730. Convention date, Dec. 14, 1934. [Class 39 (i)] A gas-discharge tube is energized by alternating-current and is connected in parallel with a condenser 5 which is connected in series with an inductance 6 adapted to be short-circuited by a switch 10, such as a press-button, and the condenser and inductance are so tuned to each other that the voltage across the condenser is sufficient to ignite the tube. A steadying inductance or resistance 4 and a resistance 7 are provided. After ignition the condenser may be disconnected by a switch which may be mechanically connected to the switch 10 and may be operated by the discharge current. The tube may be adapted to emit ultra-violet rays and may contain a filling of neon and mercury. Values of the condensers and inductances used with specified voltages are given in the Specification.
Patent GB-428471-A (GB)
Title: Improvements in or relating to the electrical precipitation of matter suspended in gases
IPC: B03C3/40
Filed: 1933-11-14
Abstract: In electrical precipitators of the kind comprising tubular collecting electrodes b and flexible discharge electrodes c passing therethrough, and connected to frame members e, e<1>, swinging of the discharge electrodes is prevented or minimized by making one or more of the electrodes d of a rigid or semi-rigid construction connected rigidly or with a limited amount of freedom to the lower supporting frame member.  As shown, the member d is made rigid and is rigidly supported at the top of the casing by the insulator i<1> and centring screws e<2>. The upper frame e is rigidly clamped to the member d and is further supported by <PICT:0428471/III/1> adjustable ties e<5>. The lower frame e<1> may be rigidly attached to the member d or, alternatively, may have a limited movement relatively thereto and be connected by adjustable ties. The wire electrodes c may be kept taut by weights e<12> suspended from the lower frame e<1> or, where the latter is rigidly attached to the member d they may be tightened by screw connections.  A preferable form of the rigid electrode d is shown in Fig. 4 as comprising two angle sections d welded together at their corners and serrated on the free edges.
Patent GB-845745-A (GB)
Title: Purification of sand containing colour-imparting impurities
IPC: C03C1/02
Filed: 1955-11-07
Abstract: Ferruginous material is removed from sand by mixing substantially dry, washed sand with substantially dry, hydrogen chloride at a temperature below 250 DEG C., and washing the treated sand with water.  Gaseous HCl may be passed into sand or HCl may be generated in situ from strong HCl and strong H2SO4. In the first alternative, sand is placed in a vessel, which is wholly or partially evacuated, and the vessel is heated at 70-100 DEG C., while gaseous HCl is passed in until a subatmospheric, atmospheric, or superatmospheric pressure is obtained.  The pressure falls during treatment, and the occurrence of a steady pressure shows the completion of the treatment.  As a further means, the sand may be passed into one end of a pipe containing an archimedean screw, while gaseous HCl, obtained from chlorosulphonic acid and concentrated HCl, is passed into the other end of the pipe.  The pipe may be externally heated, or the sand may be preheated and the pipe jacketted.  Turning of the screw continuously exposes fresh sand surfaces to treatment.  The treated sand may be returned through the pipe, or a series of pipes may be used.  In the second alternative, heated sand from the drier is mixed with strong HCl and strong H2SO4 so that the mixture is at 60-100 DEG C.  The H2SO4 dehydrates the HCl and the water derivable from the HCl should not exceed 30% by weight of the 98% H2SO4.  A minimum of 0.5% HCl by weight is used.  The mixture is left in a closed container, which may be jacketed, and may be tumbled.  After washing the sand from either method, it may be subjected to froth flotation, e.g. at pH 1.5-2.3, in the presence of an anionic collecting agent, e.g. mahogany sulphonate.  Specification 651,702 is referred to.
Patent GB-385713-A (GB)
Title: Improvements in switches for use in connection with overhead electrical transmissionlines
IPC: H01H31/28
Filed: 1931-11-17
Abstract: 385,713. High-tension switches. GAVED, J. L., 12, Parks Street, Minehead, Somerset. Nov. 17, 1931, No. 31798. [Class 38 (v).] In order to simplify wiring, the fixed contact 3 and line terminal 20 of an overhead switch are mounted at the ends of an insulator 1 which projects on each side of a supporting arm 2, and are connected together by a conductor passing through the insulator. The moving contact 7 is pivotally mounted at 15 on a pin-type insulator 4, which is itself mounted on a pivoted lever 5 operated by a rod 14, and carries a pin 13 located between lugs 10, 11 for limiting its movement relative to the insulator 4. A spring 12 urges the contact 7 forwards, so that the opening movement is accompanied by relative rotation of the contacts which are thereby cleaned and more easily parted. A plurality of such switches may be mounted on a supporting arm, and operated by the same rod 14.
Patent GB-606446-A (GB)
Title: Electrical pulse generator
IPC: H03K3/537
Filed: 1945-11-26
Abstract: 606,446. Pulse-generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Nov. 26, 1945, No. 31888. Convention date, Dec. 20, 1943. [Class 40 (vi)] [Also in Group XL (a)] In a pulse generator comprising a delay line 11 or other capacitive element which is changed from a source 16 and then discharged through a load 18 by means of a triggered spark-gap 17. An impedance 30 in series with the gap and load has the triggering voltage applied to it and is then short-circuited in response to the breakdown of the gap. Oscillator 26 and pulseforming circuit 27 produce triggering pulses in transformer 29 to fire the main spark-gap 17 which is of the plate and point type. The induced voltage across winding 30 then fires the auxiliary gap 31 to short-circuit winding 30 and prevent transients from distorting the waveform.
Patent GB-428617-A (GB)
Title: Improvements in or relating to blasting cartridges
IPC: F42B3/06
Filed: 1933-11-16
Abstract: 428,617. Blasting -cartridges. TAYLOR, J., 7, Winton Circus, Saltcoats, Ayrshire, and IMPERIAL CHEMICAL INDUSTRIES, Ltd., Millbank, London. Nov. 16, 1933, No. 31991. [Class 9 (i)] Relates to blasting-cartridges containing a charge of explosive or other reagents or of liquefied gases adapted to produce gases, which are allowed to escape through a nozzle to produce the blasting effect, the outlet passages of the nozzle being usually at right angles to the axis of the cartridge. According to the invention, the outlet passages 2 of the nozzle 1 are directed obliquely outwards towards the front of the bore-hole, so that the reaction of the escaping gases helps to keep the cartridge in the borehole. The nozzle has a screw-thread 3 for attachment to the cartridge and an axial hole 4, which allows the nozzle to be cleared by a punch if the sealing disc of the cartridge becomes jammed therein.
Patent GB-322860-A (GB)
Title: Improvements in or relating to horseshoes
IPC: A01L1/02
Filed: 1928-11-03
Abstract: 322,860. Olver, A. Nov. 3, 1928. Metal shoes.-A horseshoe comprises a bar 1 extending transversely across the foot behind the toe and in front of the frog, with clips 7 engaging the walls of the hoof, and lateral arms 5 provided with nail - holes. The lateral arms may be thinned out to form plates 5b at the heels:
Patent GB-420720-A (GB)
Title: Improvements in or relating to sewage disposal
IPC: C02F11/18
Filed: 1933-11-18
Abstract: 420,720. Treating sewage. PORTEOUS, W. K., 6, Netherton Road, St. Margaret's, Twickenham, Middlesex. Nov. 18, 1933, No. 32219. [Class 111] Plant for treating sewage sludge by the wet-carbonization process comprises a recuperator through the heating portion d of which sludge is passed from a receptacle a by a pump b for delivery through a multi-way valve e to one of a series of receptacles f<1>, f<2>, f<3> while sludge is drawn from another of the receptacles through the valve e by a pump h and passed through the cooling portion j of the recuperator to a filter-press k, or other device for separating solid from liquid. Sludge held in the third receptacle is heated therein by steam coils or a steam jet or jacket. The valve e is of the rotary plug type which allows of one receptacle being connected to the pipe d while another is connected to the pump h. It is stated that the sludge may be transferred from the receptacles f<1>, , f<2>, f<3> to the filter-press by steam pressure. The recuperator may be arranged in a heated chamber.
Patent GB-464389-A (GB)
Title: Improvements relating to ground ropes for trawl nets
IPC: A01K75/06
Filed: 1936-11-26
Abstract: A ground rope for trawl nets has a roller composed of a plurality of discs of rubber tyre material threaded on to a wire rope and pressed together by hydraulic or other power, being bound at its ends either by a metal spike or by metallic grips engaging the strands of the wire rope.  The roller may extend to the full length of the ground rope.  Specification 429,450 is referred to.
Patent GB-1439257-A (GB)
Title: Fuel injection nozzles for internal combustion engines
IPC: F02M61/10
Filed: 1973-07-06
Abstract: 1439257 IC engine fuel injectors ROBERT BOSCH GmbH 6 July 1973 [10 July 1972] 32408/73 Heading F1B A groove 11 in the outer surface of the valve needle 2 is accessible through a laterally widened portion of the needle bore 13 to permit access of a needle extracting tool. The needle loading spring 6 acts through a plunger 7 passing through an opening 10 in an abutment surface extending over the bore 13 and limiting needle lift. A counterbore (16), Fig.2, (not shown), of the bore 13 may provide tool access to the groove 11.
Patent GB-1188508-A (GB)
Title: Improvements in or relating to Rapid Air Relief Valves
IPC: F16K11/04
Filed: 1967-07-14
Abstract: 1,188,508. Valves. ROBERT BOSCH G.m.b.H. 14 July, 1967 [16 July, 1966], No. 32507/67. Heading F2V. [Also in Division F1] An air relief valve 21 allows compressed air to enter an operating cylinder 8 from a container 1 when a valve 3 is opened and allows air from the cylinder to escape to the outer air by a path 9 when the valve 3 is closed, the valve 21 being guided for free displacement in the housing by an extension 27 having longitudinal recesses 29 and sliding in a bore 17. A shoulder 25 on the valve 21 seats against the end 16 of the bore 17 before a resilient lip 23 bends inwardly to allow compressed air to flow into the cylinder 8. The inlet connection 11 of the relief valve is connected to a vent 4 by the valve 3 to allow the relief valve to be returned to the position shown while air escapes from the cylinder 1 through the recesses in the extension 27.
Patent GB-191913-A (GB)
Title: A device to facilitate the moving of heavy books, or other articles, on a desk or table
IPC: A47B19/00
Filed: 1921-12-05
Abstract: 191,913. Bailey, R. N. A. Dec. 5,1921. Desks &c.-A device for facilitating the movement of a book or other article on a desk or table comprises a board or plate 1 with two or more parallel rods 2 on the underside, and rollers 3 which are shorter than the rods 2 so that the device can be moved at right angles to the rods and also to a limited extent parallel thereto. I
Patent GB-604727-A (GB)
Title: Improvements in or relating to power presses
IPC: F16P3/00
Filed: 1945-12-03
Abstract: 604,727. Machinery guards. MANGANESE BRONZE & BRASS CO., Ltd., and NEWBY, E. J. E. Dec. 3, 1945, No. 32589. [Class 80 (iv)] A vertically-sliding gate a for guarding the moving parts of a power press engages through slots b pins c, c on the end of pivoted bars d, d which carry blocks e, e so that when the guard is raised to open position the blocks e, e are moved between the movable pressure plate f of the press and the die-block g to prevent actuation. When the guard is lowered the blocks e are moved clear of the plate f and the press can be actuated. One of the bars has an arm h secured thereto, the end i of which interlocks through a trip-gear rod e with the starting handle j of the press, which cannot be operated until the guard is closed. The rod l has then to be pulled forward by its handle m to allow actuation of the handle j so that both of the operators hands are occupied during the starting operation. Specification 517,659 is referred to.
Patent GB-1189916-A (GB)
Title: Method of Making a Mould
Inventor: GITTINS KENNETH HUBERT
IPC: C08K3/08
Filed: 1968-07-09
Abstract: 1,189,916. Moulds. FORD MOTOR CO. Ltd. 9 July, 1968, No. 32602/68. Heading B5A. A mould is manufactured by the following steps: (a) powdered steel is dispersed in an epoxy resin mixed with a hardener therefor, e.g. an aromatic amine; (b) the dispersion is moulded to the required shape; (c) the resin is cured; and (d) the mould is plated with chromium. The steel may comprise 10-40% by volume of the composition. In the example, the mould is formed using a wooden model and cured for 2 hours at 60‹ C., 18 hours at 40‹ C., 4 hours at 60‹ C. and finally raised to 140‹ C. at the rate of 10‹ C. per 15 minutes.
Patent GB-444310-A (GB)
Title: Improvements in or relating to ear protectors
IPC: A61F11/06
Filed: 1935-11-25
Abstract: 444,310. Ear - protectors. WAIBEL, J., 314, Kirschstrass, Widnau, Germany. Nov. 25, 1935, No. 32617. Convention date, Nov. 27, 1934. [Class 63] [See also Group VI] An ear-protector comprises a fabric bag 1 surrounded at its mouth by a loop 2 of springy wire with overlapping ends formed into finger grips 3 and preferably guided by an eyelet 4. The loop may be formed with a cranked portion to increase resilience. In use compressing the parts 3 together expands the loop and enables it to be slipped over the ear. The protector can be used on either ear.
Patent GB-1080668-A (GB)
Title: Device for loading silo vehicles
IPC: B65G65/32
Filed: 1965-07-30
Abstract: 1,080,668. Transferring cargoes to vehicles; screw conveyers. POLYSIUS G.m.b.H. July 30, 1965 [Sept. 11, 1964], No. 32644/65. Headings B8A and B8E. A device for loading vehicles 1, Fig. 1, with powder, e.g. cement, comprises an arm 2 having two pivotally interconnected arm portions 3, 4 each containing a driven worm conveyer 11, or 12, the portion 3 being pivotally mounted at 5 to a fixed supply container (not shown) and the free end of the portion 4 carrying a loading head 9 for attachment to the vehicle. The pivotal movement of the portion 3 about the axis 5 and that of the portion 4 about an axis 8 is produced by gearing 15, 16 and 17, 18 which are so linked by gearing 19 that the head 9 moves along a straight path, Fig. 2 (not shown), for connection to a plurality of filling apertures in the vehicle. The powder passes from the fixed container, through a hopper 6 to the portion 3 and from the latter through a tube 10 to the portion 4. A hose-pipe 22 is provided for removing air expelled from the vehicle during filling of the latter. Devices are stated to be known which are similar to'the above but in which the straight path movement of the loading head is produced by carrying the latter on a carriage running on rails provided on the roof of a building, the arm portion carrying the loading head being also supported on the roof.
Patent GB-359226-A (GB)
Title: Improvements in or relating to locks and latches
IPC: E05B63/04
Filed: 1930-10-31
Abstract: 359,226. Door latches and locks. THOMPSON, H. A., 163, Euston Road, London. Oct. 31, 1930, No. 32720. [Class 44.] In a door latch of the runner-plate type in which the bolt l is capable of inward movement against the action of a coiled spring o independently of the runner-plate, the latter is in the form of a rectangular frame composed of two longitudinal rods g which are connected by end strips e, f and fitted with coiled springs k adapted to be compressed between fixed lugs h and the strip e. The latter is formed with an aperture in which the headed spindle m carrying the bolt l is rotatably mounted, while the strip f is shaped to fit around the boss of the usual handle-operated follower j. A locking-plate s, controlled by a lever r, may be moved by a key into engagement with the strip e to lock the frame against inward movement; if it is desired that the bolt itself should also be locked, to prevent it from being forced in, the plate s is formed with a projecting nose t, Fig. 4, which engages behind the bolt when the locking-plate is shot.
Patent GB-817771-A (GB)
Title: Improvements in or relating to the manufacture of crimped multifilamentary yarn of synthetic organic textile material
IPC: D02G1/02
Filed: 1956-10-26
Abstract: 817,771. Crimping yarns. HEBERLEIN & CO., A. G. Oct. 26, 1956 [Nov. 11, 1955; July 3, 1956], No. 32739/56. Class 120(3) Multifilamentary yarn of synthetic organic material e.g. a polyamide, polyester or polyvinyl, having little or no twist (up to 30 turns/metre) is crimped to produce a yarn in which the internal tensions are at least partially compensated. In the crimping process the yarn is temporarily twisted e.g. to 3,000-5,000 turns/metre; heated e.g. with saturated steam under pressure (3 atmospheres) or by air at 200‹- 220‹C. for a period of 2.4 seconds-20 minutes "to set the internal torsional tensions" imparted by the twisting; backtwisted to a normal twist; temporarily twisted e.g. to 2,000-4,000 turns/metre, in the opposite direction to the first such twisting; heated e.g. with saturated steam under 1.3-2.5 atmospheres or by air at 150‹- 180‹C. for a period of 1.5-2.5 seconds "to set the internal torsional tensions"; backtwisted to a normal twist. The yarn is given a permanent twist e.g. 56-80 turns/ metre S or Z, which is stated to be obtained from a formula expressing the number of turns/metre as 2,870 multiplied by the product of "twisting coefficient" (0.3-1) and the reciprocal of the square root of the denier: such twist is imparted prior to or during the process e.g. between the two temporary twisting operations and/or by backtwisting beyond the zero point. One or both temporary twists may be imparted in one step on bobbins (as by means of a ring or uptwisting device) or by false-twisting. The second high twist may be less than the first and the second heat treatment may be effected at a lower temperature and/or for a shorter period than in the first heat treatment.
Patent GB-327609-A (GB)
Abstract: 327,609. Quijano, J. May 6, 1929. Multiplying-apparatus.-A calculator for multiplication, and in the form of a pencil holder or like article, comprises an inner tube or pencil supporting a number of drums a, b, c bearing longitudinal rows of the Pythagorean products and surrounded by a cylinder d slotted at e to expose one row of each drum. Mounted on the cylinder are numbered rings serving as cursors. In use, the drums are set to bring the products relating to the digits of the multiplicand into view and the cursors are shifted along to the figures of the edge of the slot e corresponding with the digits of the multiplier. The cylinder, which may be spring-controlled, is then positioned successively with respect to the several drums so as to enable the partial products to be read off and mentally added, the successive positions of the cylinder being defined by engagement of stationary projections h with notches g in the cylinder. The inner tube may be graduated to serve as an adding-device.
Patent GB-338703-A (GB)
Title: Improvements in surveyors' levels
IPC: G01C5/00
Filed: 1929-10-29
Abstract: 338,703. Tallack, H. T. Oct. 29, 1929. Sighting-levels.-The pivoted telescope C of a surveyor's level is raised or lowered by a plunger D which is actuated by a wedge-shaped metal block E. The latter is urged towards the position for lowering the telescope by the spring H but may be pushed in the opposite direction by the micrometer screw F. The screw F engages the block E through a loose connecting piece G.
Patent GB-324438-A (GB)
Title: Improvements in transmission of power by liquids
IPC: F16H39/36
Filed: 1929-08-28
Abstract: 324,438. Cameron, W., and Cameron, J. G. Aug. 28, 1929. Clutches and speed-varying mechanism.-In hydraulic variable-speed gears having pumps and motors of the meshing gear type, the torque and speed of the driven shaft are automatically varied in stages according to the resistance offered to the driven shaft. The pump 4, Figs. 1 and 3, draws liquid from a reservoir 13 and normally delivers it through a conduit 16 to a motor 5. Should the pressure in the conduit increase, a valve 22, Fig. 4, is opened against spring pressure and the liquid obtains access to another motor 6. Other motors 7, 8 adapted to come into action successively may be provided, together with a reversing motor 9 supplied through a conduit 16<x>. A valve 17 determines whether the pumped liquid is supplied to the conduit 16 or 16<x>, and a valve 19 is provided which may be opened to varying extents to bye-pass part or all of the pumped liquid.