baber/WOPTO huggingface dataset:
Patent GB-128533-A (GB)
Title: Improvements in or relating to Small Arms.
Inventor: CRAWFORD RONALD
IPC: F41A17/46
Filed: 1918-04-17
Abstract: 128,533. Crawford, R., and Taylor, W. G. D. April 17, 1918. Firing-appliances; safety appliances; breech actions, sliding breech-block.-Consists in mounting part of the firing-mechanism on a detachable member which can be readily removed by the finger and thumb to render the gun inoperative. In the construction shown, a cranked sear-actuating lever H, M is mounted on a plate B which is attached to the side of the breech-body by a lip D and a turning catch operated by a thumb. lever E.
Patent GB-787265-A (GB)
Title: Improvements relating to alternating electric current rectifier assemblies of the dry surface contact type
IPC: H01L25/07
Filed: 1955-03-29
Abstract: 787,265. Rectifiers. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd., and STEVENS, S. A. March 8, 1956 [March 29, 1955], No. 9097/55. Class 37. A contact member for use between dry rectifier elements in a stack is manufactured by placing on a flat metal plate a thinner sheet of insulating material and in one operation punching a washer of the insulating material and an aperture in the metal plate and closely fitting the washer within the aperture. The central hole in the washer may be punched at the same time or previously.
Patent GB-116765-A (GB)
Title: A Method of Treating Oils.
Inventor: BOGAERTS JOSEPH
IPC: C10G17/02
Filed: 1917-06-25
Abstract: 116,765. Bogaerts, J. June 25, 1917. Mineral and tar oils, purifying.-Crude and other oils are treated with liquid acids in rotary cylindrical casings a mounted on a spindle b so that the substances are alternately projected from one end to the other of the casing in a direction transverse to the axis of rotation. Curved or conical cover-plates are provided at the ends of the casings, and a central charging and discharging door is provided in each cover-plate. Specification 5637/02 is referred to.
Patent GB-772157-A (GB)
Title: An adjustable reclining chair or the like article of furniture
IPC: A47C1/034
Filed: 1955-03-29
Abstract: 772,157. Reclining chairs. LORENZ, A. March 29, 1955 [April 23, 1954], No. 9170/55. Class 52 (2). A unitary seat and back-rest member is pivoted at 26 to a fixed frame 10, a leg-rest 44 being pivoted at 46 to the front of the seat 22 and actuated by a linkage comprising a member 30 pivoted at 32 intermediate its ends to the fixed frame and connected at its upper end by a link 38 to the movable seat and backrest and engaging at its lower end, by a link 60 or an abutment, a swinging arm 56 pivoted at one end to the fixed frame or to the seat 22 and connected at the other end by a link 52 to the leg-rest.
Patent GB-994994-A (GB)
Title: Improvements in or relating to vehicles for transporting and dispensing freshly mixed concrete or the like
IPC: B28C5/42
Filed: 1962-03-09
Abstract: 994,994. Concrete mixers. G. MAXON. March 9, 1962 [Jan. 23, 1962], No. 9215/62. Heading B1C. A vehicle-mounted agitator for ready-mixed concrete has an open-top stationary drum having vertical, parallel sides 13 and a generally conical curved bottom 10 and with a rearwardly facing discharge opening, mounted upon outrigger bearings 25, 26, 30 about which it may be tilted by hydraulic rams 40 into a vertical discharging position (see Fig. 3, not shown). An inclined discharge shoot 32 has an enlarged circular receiving pan 33 (see also Fig. 5, not shown) at its upper end and is pivoted about a vertical pivot 34, 35, 36 and a horizontal pivot 38. The spacing apart of the drum pivots 26 enables the shoot to be positioned closely under the lower edge 14 of the discharge opening. The rear portion of the drum is covered by a deck 47 carrying a hydraulic ram 50 for actuating the gate 48, and the rear bearing bracket 46 of a rotatable shaft 45 carrying agitating members 43, 44. The agitating members may be used to assist discharge by reversing the direction of rotation of the shaft. In a modification, Fig. 7, for carrying a "dry" mix of "low-slump" concrete which does not need agitating, the agitating members are replaced on the part of the shaft passing beneath the deck 47 by two continuous helical ribbon members 59 which extend above and to the rear of the lower edge 14 of the discharge opening, the shaft being supported by an outrigger bearing bracket 46<SP>1</SP>. The helical ribbon members prevent choking of the dry mix in the space below the deck 47 and in the discharge outlet; the remaining agitating members 43, 44 may be omitted or replaced by others 43<SP>1</SP>, 44<SP>1</SP> of thinner section and less inclination, see Fig. 9 (not shown). Specification 839,054 is referred to.
Patent GB-196270-A (GB)
Title: Improvements in ignition apparatus for internal combustion engines
IPC: F02P19/00
Filed: 1923-04-04
Abstract: 196,270. Claudel, C. H. April 11, 1922, [Convention date]. Sparking-plugs; flame igniters. - A charge of fuel, more readily inflammable than the main charge, is supplied through a valve adjacent to the sparking points. The casing of the plug may, as shown in Fig. 1, be provided with seatings for both the insulated electrode 13 and the inlet valve 8, or, as shown in Fig. 2, a valve 20 may form part of the central electrode of the plug. In the former construction, a chamber 6 is formed by inserting a plug 5 into the inner end of the casing 1. A passage 6<1> connects the space 6 with the cylinder. In the second construction, the valve 20 is held against its seating by a spring 25, the fuel or fuels entering the space around the conductor 21 from one or more passages 17, 17<1>, which may be connected to different fuel supplies. Two sets of terminals 23, 24 are fitted at the inner end of the plug. A position as near as possible to the centre of gravity of the main explosive mixture is chosen for the ignition device; for example, it may be placed at the top of a hemispherical cylinder head.
Patent GB-1172873-A (GB)
Title: Electrography and Photosensitive Element therefor
IPC: G03G5/024
Filed: 1967-02-28
Abstract: 1,172,873. Electrographic material. KATSURAGAWA DENKI K.K. 28 Feb., 1967 [7 March, 1966], No. 9405/67. Heading H1K. A photo-sensitive element for use in electrography comprises a thin photo-conductive layer, at least one side of the layer being integrally bonded with a trapping layer and a highly insulating layer on the surface of the trapping layer. The photo-conductive layer changes its volume specific resistivity by at least a factor of 10 upon irradiation and the trapping layer contains a large number of impurity levels which trap charge carriers injected therein sufficiently deep to prevent thermal release of the carriers. A method of electrography comprises applying a D.C. voltage of one polarity across a photo-sensitive element as above and then applying a D.C. voltage of opposite polarity across the element concurrently with imagewise exposure. The conductive layer 1 (Fig. 1) may be of Al, paper, Nesa glass or plastics sheet. The photo-conductive layer 2 may be sintered or vapour deposited films of CdS, CdSe, Se, ZnO, polyvinyl carbazole or mixtures thereof. The trapping layer 3 may be ZnS, ZnCdS 2  activated with Cu, Ag or Pb, anthracene, anthraquinone, S or PbO. The insulating layer 5 may be transparent and of polyester. A combined photo-conductive and trapping layer may be made by diffusing impurities into a layer of photo-conductive material and then performing a second diffusion to give at least one thin layer which has trapping properties. The D.C. voltages may be applied either with an electrode or a corona discharge. A drum 14 (Fig. 4) has a conductive layer 1 thereon, a photo-conductive layer 2, a trapping layer 3 and an insulating layer 5. An object 18 is illuminated by light sources 19 and focused on to the drum by the optical system 20. A corona discharge 15 and if required a light source 16 first apply a voltage of one polarity to the drum and a second corona discharge 17 applies a voltage of opposite polarity. In an alternative embodiment (Fig. 3, not shown), a charging and exposing system using an electrode is disclosed. It is said that the sequential application of voltages of opposite polarities produces an apparent change in the dielectric constant of the trapping layer and that differences in the persistent internal polarization due to exposed and unexposed portions of the layer are thereby emphasized. Development of the electrostatic image may take place under illumination since the charge pattern can only be erased by the application of an electric field.
Patent GB-526734-A (GB)
Title: Improvements in or relating to stoppes or caps primarily for bottles, jars, carboys and other containers
IPC: B65D41/02
Filed: 1939-03-27
Abstract: 526,734. Stoppers for bottles and like. FREEMAN, W. S. March 27, 1939, Nos. 9479 and 9687. [Class 125 (iii)] A bottle or like stopper of the type which can be pierced by the needles of hypodermic syringes has a plug portion 1 fitting within the bottle neck, and a core 8 of sponge rubber or equivalent material. The lower end 4 of the plug forms a thin diaphragm capable of being pierced by a needle. The core 8 is retained in the plug by an inwardly projecting lip 5. The plug has deformable serrations or ribs on its straight or tapered surface and it may be provided with a turn down skirt 12 as shown in Fig. 8, or it may have a domed head 13. Fig. 9, with a recess 14 to receive the end of the bottle neck.
Patent GB-331209-A (GB)
Title: Improvements in magnets
IPC: H04R9/02
Filed: 1929-03-25
Abstract: 331,209. Voigt, P. G. A. H. March 25, 1929. Magnets; electromagnets.-In a magnet of the type used in moving-coil loud-speakers, particularly a magnet as illustrated in Specifications 12141/11; 275,571 and 288,276, [both in Class 40 (iv), Telephones &c,], the central stem or peg is so shaped that the area of the path available for the flux in the iron is a minimum at the gap and then increases towards the base of the peg where it is a maximum, the area at a distance equal to the gap radius from the top of the peg being at least 50 per cent greater than the area at the gap. To this end the peg is made of stepped or smoothly-tapering form, the degree of taper decreasing towards the base of the peg. In order that the area of the path at the gap shall be a minimum, the axial length of the gap must be less than one-fourth, but not less than onefifteenth, of the inner diameter of the gap. The yoke is U-shaped and its cross-section is not less than that of the peg at corresponding points. The front plate is increased in thickness as the distance from the gap increases. In the form shown, the area of the flux path at the gap is #dL where d and L are the inner diameter and axial length of the gap respectively, and as this area must be less than the cross-sectional area of d the peg at any point, L must not exceed -. If 4 the iron is out away as at C, the gap length must be still smaller, so that #dL is less than the crosssection at C. The thickness of the top plate H increases away from the gap, the metal increasing in thickness in a direction away from the base. The top plate may be slotted at K to reduce leakage. The magnetizing coil E is preferably tapered internally to fit the peg.
Patent GB-678586-A (GB)
Title: Improvements in or relating to load handling pallets
IPC: B65D71/04
Filed: 1950-04-18
Abstract: 678,586. Load-handling pallets. ADDISONSEMMES CORPORATION. April 18, 1950. [Sept. 6, 1949] No. 9506/50. Class 78 (iv). [Also in Group XVII] A pallet for incorporation in a unit shipment comprises a rectangular platform 10 (Fig. 3) formed of paper board and provided with flanges 11, 12 secured together at the corners and with spaced supporting members 14 secured to its under face. The supporting members 14 are preferably formed from corrugated paper stock wound spirally with the convolutions secured together by an adhesive. The lower ends of the posts are connected by strips 15 of paper stock. After a stack of cartons has been formed on the pallet a sleeve 17, formed from a sheet of paper stock with its ends joined by a strip of adhesive fabric 18, is placed around the stack between the outer cartons and the flanges 11, 12. A cap 19 formed similarly to the pallet is then secured over the stack by means of metal straps 20 which pass over protective strips 21 of paper stock arranged at the corners of the pallet and of the cap. Where a stack of sheets is carried on the pallet the sleeve 17 may be replaced by angle-section corner strips of paper stock fitting between the corners of the stack and of the pallet. The protective strips 21 at the corners of the cap 19 may be replaced by strips of wood extending right across the cap. Specification 638,033 is referred to.
Patent GB-430529-A (GB)
Title: Improvements in flyers for spinning, twisting, doubling and like textile frames
IPC: D01H7/48
Filed: 1934-03-27
Abstract: 430,529. Spinning and like flyers. FRASER, G., FRASER, N., and FRASER, J., Westburn Foundry, Arbroath, Angus. March 27, 1934, No. 9518. [Class 120 (ii)] Spinning, twisting, doubling, and like flyers comprise a conical hood 1 the legs being welded thereto or to projections depending therefrom, and separately formed eyes 5 being secured to the lower ends of the leys, as by a split quill 7, a sweated spigot and socket joint, or by direct welding. As shown, the legs 4 are welded to projections 3 from a heavy rim 2. The terminal curl of each eye may be welded to the shank portion. In the Provisional Specification it is stated that when the eye is of pig-tail formation, the curl is formed to constitute a V-guide, the extremity of the tail being spaced from a flat forming one side of the V-guide.
Patent GB-184527-A (GB)
Title: Improvements in the process of, and apparatus for, crystallizing copper sulphate
IPC: B01D9/00
Filed: 1921-03-31
Abstract: 184,527. Dossett, J. M. March 31, 1921. Precipitating solids from solutions; agitating liquid to be frozen. - Small crystals of copper sulphate are obtained by rapidly cooling coppersulphate liquor in a smooth vessel, while continually agitating the liquor by means of an air blast or mechanical stirrer. The vessel A mav be made of copper, or enamelled metal, and is surrounded by a jacket D through which cold water is circulated. The cooling-agent may also circulate through inclined pipes B passing through the vessel. The solution may be agitated by air blown through cne or more pipes H.
Patent GB-1013888-A (GB)
Title: Improvements in or relating to methods of and apparatus for reacting of fluids
Inventor: FOWLER RAY
IPC: B01J10/00
Filed: 1963-03-12
Abstract: 1,013,888. Reaction vessel for fluids. POWER-GAS CORPORATION Ltd. March 6, 1964 [March 12, 1963], No. 9662/63. Headings B1F and B1X. A pressurized mixture of fluids is injected through a nozzle 40, Fig. 3, into a vessel 31, the nozzle having an aperture which is adjustable, so as to induce recirculation of the mixture round the circuit comprising vessel 31 and conduit 34, a proportion of the reacted mixture being withdrawn at 44. The fluids enter at 35, 36 and at least one of them may be preheated. The nozzle aperture is adjusted by handwheel 43 and threaded spindle 42, Fig. 4 (not shown) to maintain a desired pressure difference reading on gauge 45, which corresponds to a desired degree of recirculation. Vessel 31 may contain a catalyst, and conduit 34 has a jacket or heat exchanger 52, fed with heating or cooling medium depending on whether the fluid reaction in vessel 31 is exothermic or endothermic. A valve on conduit 44 maintains a desired pressure in vessel 31. Typically carbon monoxide and hydrogen are reacted to form methane using a reduced nickel catalyst supported on Kieselguhr. In Fig. 5 the fluid mixture flows down a centre tube 67 and up outer tubes 66 which are packed with catalyst. Tubes 66, 67 are sealed to plates 64, 65 and the plates and vessel 60 form a heat exchanger. The aperture of nozzle 73 is controlled automatically by diaphragm motor 76 to maintain the pressure difference reading on indicator-controller 78 constant. Temperature of the fluid mixture is measured by thermometer 86, and controller 85 actuates diaphragm motor 83 controlling the heating or cooling medium supply to the heat exchanger 81, 60, 84 to maintain the temperature constant. Typically naphthalene and preheated air enter conduit 68, secondary air enters at 69, tubes 66 are packed with vanadium pentoxide and phthalic anhydride leaves at 77. A third embodiment, Figs. 1 and 2 (not shown), uses a reaction vessel enclosing an open ended central tube to form a recirculation circuit. That arrangement is used to react hydrogencontaining gas and higher hydrocarbons to produce lower hydrocarbons, reacting hydrocarbons and sulphuric acid to produce sulphates or sulphonates, and hydrolysing organic compounds with water or alkali solution. More than one nozzle may be provided, and nozzles of various sizes may be interchangeable.
Patent GB-258186-A (GB)
Title: Improvements in and relating to direction indicators for vehicles
IPC: B60Q1/34
Filed: 1926-04-13
Abstract: 258,186. Swales, E., and Swales, J. April 13, 1926. Road-traffic signals on vehicles. - A hand A carried by a rod E is arranged at each side of the instrument board C of a vehicle, and when the rod is extended, the hand falls into the position shown on the right of Fig. 1 to indicate a turn. On the rod E being withdrawn, a shaped extension of the hand engages a bracket K to cause the hand to be raised to a vertical position. An operating knob J on each rod passes through a slot D in the board C, and a spring B engages the knob to hold the hand in either of its positions.
Patent GB-678702-A (GB)
Title: Automatic work-feeding and positioning mechanism for press toolwork
IPC: B21D43/26
Filed: 1951-04-26
Abstract: 678,702. Punching washers &c. MITCHELL, D. April 26, 1951, No. 9725/51. Class 83 (iv). In a press for making washers &c., each descent of a ram actuates means to cut a notch in the edge of the work-piece and means engaging the notch for feeding the work-piece beneath a stuffer plate 8. On descent of the ram a punch 25 cuts a notch 31 in the edge of the strap and a spring-pressed screw 30 engages a bell-crank 13 to operate a slide 18 with spring- pressed pawl 24 engaging the notch to feed the strip. The movement of the slide 18 in the feed direction is limited by a nut 20. A punch 26 forms a small hole 6 in the strip. On ascent of the ram the slide 18 is moved backwards and the pawl engages the next notch. When the ram again descends a notch and a hole 6 are made and the previously-formed hole 6 registers with a punch 27 which blanks out the washer leaving a hole 7 with which a spring-pressed pin 28 engages to prevent backward movement of the strip.
Patent GB-591851-A (GB)
Title: Improvement in production of alloy steel
IPC: C22C35/00
Filed: 1942-07-14
Abstract: Chromium steels are made by adding to a bath of molten steel a solid alloy consisting of 40-70 per cent of chromium, 0.05-7 per cent of carbon, at least 2 per cent of manganese, at least 1 per cent of silicon, and the remainder iron, the manganese content being greater than the silicon content, and the sum of the manganese and silicon being not more than 20 per cent.  The addition may be made in an open hearth or electric furnace, or in a ladle.
Patent GB-1058682-A (GB)
Title: Improvements in or relating to schmitt trigger circuits
IPC: H03K3/2893
Filed: 1964-03-09
Abstract: 1,058,682. Transistor Schmitt trigger circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. March 9, 1964 [March 7, 1963], No. 9820/64. Heading H3T. The collector to base coupling of a transistorized Schmitt trigger includes a transistor so arranged that when the circuit is in its stable states the base potential is independent of the collector potential. As shown, the coupling between the collector 36 and the base of 31 is effected by an emitter coupled pair 52, 61 of which one or other transistor is normally non- conductive depending on the state of the circuit so that the base potential of 31 is independent of the potential of collector 36 and the transistors may thus all be operated in a non- saturated mode.
Patent GB-199846-A (GB)
Title: Improvements in pocket cases for treasury notes or other papers
IPC: A45C1/06
Filed: 1922-04-06
Abstract: 199,846. Harwood, J. April 6, 1922. Purses; wallets.-Treasury notes &c. are held between a main part or side of a case and a flap secured to the main part at one end and passing through, or having a tab &c. passing through, a slot or slots in the main part at the opposite end or under a bridge-piece situated at that end, so that when the case is folded the flap assumes the folded position without puckering or bulging. The construction shown in Fig. 2 exemplifies the invention, of which several forms are described. Here a flap 2 secured to the case at the end 3 has at the free end a tab 4 passing through a slot 7 in the main part, the tab carrying a fastening 6 adapted to co-operate with a part on the back of the case to maintain the latter closed when folded. Pockets may as shown overlie, or may underlie the sliding flap, and the arrangement may be combined with a purse.
Patent GB-929309-A (GB)
Title: Improvements in or relating to pyrotechnic devices
IPC: F42B4/26
Filed: 1960-03-21
Abstract: 929,309. Marine flares. WAECO Ltd., E. H. WHEELWRIGHT, D. J. BONNESS, R. H. McDONALD, and G. W. CURTIS. Feb. 3, 1961 [March 21, 1960], No. 9865/60. Class 9 (2). A smoke generating pyrotechnic device for marine purposes, comprises an outer casing 10 of a resin-bonded paper or fibre material, which houses a charge 11 contained in a metal tube 11a. A perforated nylon tube 13 extends through the charge. The lower end of the device comprises a water-activated cell at 19, a fuze at 20, and a combustion initiator at 21, the compartments being separated by seals 17 and a perforated disc 12. The upper end consists of baffles 23, whose apertures 24 are closed by rupturable seals 24 of polythene &c. Floats 26, supporting lights 28, maintain the device upright. In another arrangement the igniting means is positioned at the top of the device.
Patent GB-316635-A (GB)
Title: Improvements in or relating to gramophones and the like acoustic instruments
IPC: H04R7/12
Filed: 1928-04-02
Abstract: 316,635. Round, H. J. April 2, 1928. Tool-arms, attaching to diaphragms; diaphragms not associated with sound conduits.-In a gramophone or the like, the movements of the stylus 1 are transmitted to a rigid or stiff diaphragm 5 of large area, through a spring 4, the stiffness of which is such that resonance occurs at about 80 to 100 cycles per second. By this means, when the stylus is operated by a sound trace cut with a velocity proportional to excess air pressure, the diaphragm is impulsed with an acceleration substantially proportional to excess air pressure. Thespring may be a strip, as shown in Fig. 1, or may be coiled, as in the construction shown in Fig. 2. In this modification, a magnifying lever 9 is interposed between the spring 4 and the diaphragm.
Patent HK-135096-A (HK)
Title: An optical communications network
Inventor: FAULKNER DAVID WYNFORD
IPC: H04J14/08
Filed: 1996-07-25
Abstract: An optical braodcast network comprises a number of remote stations (5) connected to a node (1) by optical fibre transmission paths (2,4) interconnected by optical power dividers (3), each remote station including an optical transmitter operating at a high peak power and a low duty cycle for a short period. Typically the optical transmitter is enabled to transmit information for only 10% or less of the total time and for a maximum time of 500 ns.