baber/WOPTO huggingface dataset:
Patent GB-338079-A (GB)
Title: Method of leaching phosphate rock
IPC: C05B11/06
Filed: 1930-02-05
Abstract: 338,079. Kunstd³nger-Patent-Verwertungs-Akt.-Ges. March 7, 1929, [Convention date]. Manures.-A process for leaching phosphate rock with nitric acid and potassium sulphate is characterized in that a part of the solution of phosphoric acid and potassium nitrate from a previous operation, partly freed from potassium nitrate by cooling and crystallization is used as a diluting means, thereby preventing the precipitation of calcium sulphate containing a high percentage of potassium. In a preferred embodiment, potassium sulphate, solid or mixed with a small quantity of washing liquid, is added to the greater part of the solution, say, at 80‹-95‹ C. obtained by dissolving phosphate rock in nitric acid, and to which the diluting solution and the solution obtained by washing previously precipitated calcium sulphate has been added, in amount insufficient entirely to precipitate the calcium. CaSO4.¢H2O is precipitated, on cooling changing to the dihydrate. The remaining part of the original solution and potassium sulphate are then added. By neutralizing the solution freed from gypsum with ammonia, potassium nitrate or diammonium phosphate separately, or mixtures thereof, for use as a fertilizer, may be obtained, according as to whether or not potassium nitrate is first crystallized. The mother liquor is returned to the process, the presence of ammonium salts being desirable as facilitating the production of easily filterable gypsum.
Patent GB-440461-A (GB)
Title: Improvements in and relating to precombustion chambers for internal combustion engines
IPC: F02B19/14
Filed: 1935-02-07
Abstract: 440,461. Pre - combustion chambers. DAIMLER-BENZ AKT.-GES., Untert³rkheim, Stuttgart, Germany. Feb. 7, 1935, No. 4038. Convention date, Feb. 7, 1934. [Class 7 (iii)] A pre-combustion chamber b having an insertion d against which fuel is injected, communicates with the cylinder through passages e<1>, e<2> which converge towards the pre-combustion chamber and also towards the cylinder. The passages lie with their axes on the surface of a double cone and enter the pre-combustion chamber through a recess d<1> in the insertion around which an insulating space b<1> is provided. In a modified form, two continuous passages of conical ring-shaped form are provided in the insertion.
Patent GB-607645-A (GB)
Title: Improvements in electrically heated smoothing irons
IPC: D06F75/28
Filed: 1946-02-09
Abstract: 607,645. Electric irons. HENLEY'S TELEGRAPH WORKS CO., Ltd., W. T., and MOOR, E. Feb. 9, 1946, No. 4093. [Class 39(iii)] The supply cable 14 for an electric iron may enter a terminal housing in the rear part of the handle 1 through an inlet in either side 4 or 5 of the housing, each inlet 12, 13 being accessible when a removable closure for the housing is unscrewed, to permit lateral insertion or removal of the cable and being adapted to be closed by a removable member 17 As shown, the cable 14 has a supporting sleeve 15 with a reduced portion 16 sliding into the notch 13 in the right-hand wall of the housing, and the other notch 12 is closed by the member 17 which is provided with grooves or else slides in grooves in the notch. Transfer of the cable from one side to the other can be effected without disconnecting the conductors from the terminals 9, 10 and 11, 9 being an earthing connection. The member 17 may be transparent to permit observation of an indicator lamp within the housing.
Patent GB-514619-A (GB)
Title: Improvements in or relating to the manufacture of organic acids and metal salts and esters thereof
IPC: C07C51/00
Filed: 1938-02-10
Abstract: 514,619. Organic acids and their derivatives. McLEISH, N., CRAWFORD, J. W: C., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Feb. 10, 1938, Nos. 4264, 5209, and 8051. [Class 2 (iii)] Chlorine-containing organic acids or functional derivatives thereof such as the metal salts, esters and chlorides, are prepared by causing formaldehyde or a polymer thereof to react with trichlorethylene in the presence of sulphuric acid of not less than 80 per cent. concentration, and subsequently heating the reaction mixture to a temperature of at least 80 C. and preferably to at least 120 C. in the presence of water and (or) an alcohol. A compound COCl.CHCl.CH2HSO4 appears to be first formed, which on gentle heating is converted to an acid or ester still containing the -CH2HSO4 grouping, but on stronger heating gives a hydroxy acid, an unsaturated acid or esters of such acids. If the amount of water present is at least 1.5 times the weight of sulphuric acid, chlorohydracrylic acid is produced, and if the amount of water is less than this, alpha-chloracrylic compounds mainly result, or the chlorohydracrylic acid may be dehydrated to form chloracrylic acid. Esters may be prepared by adding methyl, ethyl, propyl, isopropyl, n-butyl, secondary butyl, n-amyl, benzyl, #-phenyl ethyl alcohol or cyclic alcohols such as cyclohexanol and methyl cyclohexanol. Polymerization of the acids or esters is prevented during reaction by a small amount of resorcinol, hydroquinone, pyrogallol, copper, sulphur or tannic acid. Salts may be prepared by treating the crude acids with oxides, hydroxides or carbonates of sodium, potassium, lithium, barium, strontium, calcium, magnesium, iron, copper, lead, zinc or mercury. Examples are given of the preparation of alpha-chloracrylic acid, its barium salt and its methyl, ethyl, n-propyl, isopropyl and n-butyl esters, alpha-chloracrylic chloride, chlorohydracrylic acid and its ethyl-ester. Methyl-alpha, #-dichloropropionate is also formed in the reactions.
Patent GB-100673-A (GB)
Title: Improvements in Tools for Boring Gun Tubes or Barrels and the like.
IPC: B23D77/02
Filed: 1916-03-23
Abstract: 100,673. Worsley Mesnes Ironworks, and Bedford, W. H. March 23, 1916. Cutter-bars for finish-boring gun barrels are provided with oil conduits connected to a pressure supply. The reduced end of the bar b carries a gun-metal or like guide-sleeve c secured against rotation by a key d and against axial movement by the cutter e and screw f. The conduit b<1> communicates by holes c<2> with a groove formed behind the slightly reduced front end of the sleeve. Reamers.-The bore is turned to size by a similar bar, but carrying a solid or expanding shell reamer in place of the cutter e.
Patent GB-1099631-A (GB)
Title: Device for detecting the presence of a moving body
IPC: H03K17/95
Filed: 1965-02-01
Abstract: 1,099,631. Determining rotational speed of a shaft, electrically. GOLAY, BUCHEL & CIE. Feb. 1, 1965 [Feb. 5, 1964], No. 4365/65. Heading G1N. An impulse generator, responsive to the rotational speed of a body comprises a resonance circuit from which an output voltage is derived and relative cyclic movement between a magnetized body and the coil of the resonance circuit produces a phase shift in the output voltage in dependence upon the relative speed. The resonance circuit comprises a capacitor 3 and a coil 2 on a ferrite core, and is energized from a fixed frequency source. The magnetized body is a permanent magnet sector 8 of a non-magnetic disc 7 supported in a ferromagnetic housing 9 rotatable about the disc axis. When the circuit is in resonance, in the absence of the influence of the field from the magnet 8, a transistor 5 conducts and a signal is available in a line 6. When the magnet 8 is in the vicinity of the core 1 a voltage is induced in the coil by relative movement between the magnet and coil. This produces the phase shift in the output voltage from coil 2 and the transistor 5 will not conduct. It is stated that the generator may be used to produce phase shift in voltage ignition pulses depending upon the rotational speed of an internal combustion engine.
Patent GB-1217944-A (GB)
Title: Surgical dressings
Inventor: HALDANE GRAHAM JAMES BAIN
IPC: A61F13/00
Filed: 1968-01-27
Abstract: 1,217,944. Surgical dressings. G. J. B. HALDANE. 19 Dec., 1968 [27 Jan., 1968], No. 4367/68. Heading ASR. A surgical dressing for closing wounds comprises a first pair of flexible adhesive woven fabric strips 10 and a second similar pair of strips 11, the longitudinal edge 16 of one of the strips 10 'being flexibly connected to the adjacent edge 17 of one of the strips 11 with a suitable spacing between the edges, by threads or strips 15 and the adjacent edges of the other strips 10, 11 being similarly connected by threads 18 interlaced with the threads 15. The connecting threads or strips are integral extensions of 'the weft of the strips 10 and 11. The strips each have an adhesive layer 13 which is covered by a removable flexible plastics backing sheet 14. For closing a wound (20) the backing layers are peeled off and the strips 10 are secured to the skin, one on either side (19) of the wound. The strips 11 are then pulled apart so as to close the wound. They are then secured over the strips 10 and the adjacent skin areas (22, Fig. 5). The strips 10, 11 may alternatively be made of plastics material having interconnecting threads 15, 18, interlaced in pairs, welded to the strips 10, 11. The dressing may be used for temporary closure of surgical incisions, each edge of the incision then being covered by a J-sectioned plastics protector (24, Fig. 6).
Patent GB-215466-A (GB)
Title: Improvements in fastenings for attache cases and the like
IPC: E05C3/34
Filed: 1923-02-15
Abstract: 215,466. Berry, C. A. Feb. 15, 1923. Catches, s p r i n g.- Fastenings for attachÚ cases and the like comprise two arms d crossing one another and pivoted on a plate c notched at g and bent up to form stops for the arms, which are pressed apart by a spring j. Heads e on the arms are arranged to pass through a staple i with inclined sides and engage thereover by the action of the spring j. Thumb pieces h are formed on the other ends of the arms for releasing.
Patent GB-1253833-A (GB)
Title: Polymer compositions
Inventor: BOND JOHN ALVEY
IPC: C08L23/20
Filed: 1968-01-29
Abstract: 1,253,833. 4 - Methylpentene - 1 / ethylenepropylene copolymer compositions. IMPERIAL CHEMICAL INDUSTRIES Ltd. 8 Jan., 1969 [29 Jan., 1968], No. 4496/68. Heading C3P. A polymer composition comprises a polymer of 4-methyl-pentene-1 and 1 to 20% by weight of the composition of copolymerized ethylene and propylene, wherein the amount of ethylene is in the range 20 to 80% of the total weight of ethylene and propylene. The composition may be prepared by blending the preformed polymers, or by polymerizing 4-methylpentene- 1, optionally together with a C 4  to C 18 -linear 1-olefin, in the presence of a stereospecific catalyst and subsequently adding to the polymerization mixture ethylene and propylene to give ethylene-propylene copolymer. The preferred catalysts are combinations of TiCl 3  with an organo aluminium compound. In the examples, (a) a 4-methylpentenehomopolymer or a copolymer of 4-methylpentene- and hexene-1, stabilized with 1,1,3-tris-(4-hydroxy-2- methyl - 5 - tert. butyl phenyl) butane and dilaurylthiodipropionate is added to ethylenepropylene copolymer and (b) 4-methylpentene-1, together in some cases with hexene-1, is polymerized under hydrogen in a hydrocarbon diluent using Tidy and diethyl aluminium monochloride as catalyst, the hydrogen is purged with nitrogen and ethylene and propylene are polymerized in the reaction mixture, the polymerization being terminated by addition of isopropanol. Reference has been directed by the Comptroller to Specification 1,138,827.
Patent GB-1508595-A (GB)
Title: Shower base
IPC: A47K3/40
Filed: 1975-05-19
Abstract: 1508595 Shower basins GARDEX Ltd 19 May 1975 [4 Feb 1975] 4630/75 Heading A4N A shower basin of the type disclosed in Specification 1476375 is provided with a board or plate 24 located beneath the bottom 14 of the container 13, said board or plate being provided with feet 25 covered with adhesive 26 and being located against shoulders 23 cut from a rigid foam plastics filling 20 supporting the integrally moulded polyvinyl chloride container 13.
Patent GB-410929-A (GB)
Title: Improvements in or relating to bakers' proving presses
IPC: A21C13/00
Filed: 1933-02-16
Abstract: A bakers' proving-press is lined internally with asbestos, or that material commercially known as asbestos lining or sheeting. The door or doors are similarly lined and the linings are apertured to correspond with apertures near the tops of the doors. The body of the press may be made of any suitable material, preferably wood, and is rectangular in plan with the two longest sides forming the front and back respectively.  The asbestos lining for the bottom of the press is preferably glazed to facilitate the removal of any foreign matter lodging thereon.
Patent GB-1382445-A (GB)
Title: Method and apparatus for dissolving a gas in a liquid
IPC: B01F3/04
Filed: 1972-02-02
Abstract: 1382445 Aerating liquids ATLAS COPCO AB 2 Feb 1972 [9 Feb 1971] 4840/72 Heading B1C Gas is dissolved in a body of liquid by forcing gas bubbles into liquid to form a gasliquid mixture, supplying and maintaining the flow of the mixture to a treatment zone disposed at such a depth below the surface of the body of liquid as to expose the mixture to a pressure greater than that at the surface, collecting and removing undissolved gas bubbles from the gas-liquid solution formed in the treatment zone and, substantially without pressure change, distributing the solution into the body of liquid. The mixture may be formed at surface level, pumped to the treatment zone; and caused to flow through the zone for at least three minutes. A gas cushion may be maintained below the surface and above the treatment zone to collect undissolved gas bubbles, excess gas being removed from the cushion. Apparatus for carrying out the solution comprises a container submerged in the body of liquid constituting a mixing chamber and has an inlet, a gas outlet in the upper portion of the container, and a liquid outlet; means for supplying a mixture of gas bubbles and liquid through the inlet to maintain a flow of the mixture towards the liquid outlet to obtain a gas-liquid solution at the outlet and a collection of gas bubbles separated from the gas-liquid solution at the upper portion of the container; a conduit for removing excess gas from the container via the gas outlet to above the surface of the body of liquid; the liquid outlet opening being so disposed in relation to the remainder of the container that the outlet is substantially at the level of the container whereby the gas-liquid solution will be distributed substantially without pressure change into the body of liquid. As shown, water via supply pipe 15 and pump 13 is mixed with air via pipe 18 and pump 14, at point 19 in discharge pipe 16, and the mixture is pumped to the bottom of a container 17 submerged in body of water 10 e.g. a lake. Contact between the mixture ascending within container 17 and the liquid may be encouraged by the provision of fins, and the air-water solution formed is discharged into the body 10 via pipes 21. The flow velocity in pipe 16 and the volume of container 17 are such that an air cushion is maintained in the uppermost part of the container from which excess air is discharged via pipe 22.
Patent GB-557062-A (GB)
Title: Improved high-current electric dry rectifier assembly
IPC: H01L25/07
Filed: 1943-03-26
Abstract: 557,062. Asymmetrically-conducting resistances. STANDARD TELEPHONES & CABLES, Ltd. March 26, 1943, No. 4909. Convention date, March 28, 1942. [Class 37] A rectifier assembly comprises a metal plate 6 to one or both sides of which are clamped elements 1 so that their counter-electrode layers are in contact with the plate, the edges of the elements being insulated from the plate In the simplest form, not shown, a thin layer of varnish is applied to the counter electrode at the periphery and round the central anerture. In the form, Fig. 2, the insulation of the edges is effected bv anplying a layer 7 of e.g., cooper around each bolt hole to which the counter-electrode is applied. leaving an air space 8, 9 at the centre and edge. In the example, Fig. 3, the central plate 6 is made up of two embossed plates 12, 13, the raised parts serving the same purpose as the layers of copper 7 in Fig. 2, but the cooling effect is greater. In each case bus bars 30, 31, 32, 33 connect the elements in parallel to allow of high current intensities.
Patent GB-677320-A (GB)
Title: Improvements in or relating to the construction of buildings from poured concrete
IPC: E04B1/16
Filed: 1951-02-28
Abstract: 677,320. Floors; walls; shuttering for walls. BLACKBURN (DUMBARTON), Ltd., BOX, L. G., and ROSS, G. S. Feb. 28, 1951. No. 4915/51. Classes 20(ii) and 20(iv). In constructing houses &c. from poured concrete each upper floor is strengthened by a depending spine beam which is housed within a hollow partition between two rooms of the lower storey. The internal shuttering 5 comprises a metal network skin 5a within a frame supported on corbel bricks 6 projecting from the foundation. The shuttering is spaced by elongated wood screws 7 from the internal permanent wall shuttering 4 which comprises a wooden frame covered with strong paper or metal network and on the room side with composition board 4b. Similar shuttering 18 is used for the upper floor being supported on the wall shuttering and a partition of composition boards 15 secured to a wooden member 16 on an insert 17 in a concrete screed 12 overlying a concrete raft 3. A slot 22 in shuttering 18 provides an opening for concrete to flow between the partition boards on to a wooden box 23, an expanded metal trough 24 with a paper layer below it, stirrups 25 disposed at intervals, reinforcing rods 26 and ties 27 also being provided. Reinforcements 38, 39 are embedded in the floor. Temporary shuttering 29 for the outside wall provides a space for a perimeter beam 18 cast simultaneously with the floor. In a modification a precast spine beam 30 has end projections extending into the perimeter beam space and stirrup ends 25a and network 32 project from the upper part. In addition a reinforcing rod 26 projects at the lower end to form a hook 33 and another rod 26a passes up out of the top to form a hook 35; hook 33 is engaged by a V-shaped rod in the perimeter beam space.
Patent GB-1096561-A (GB)
Title: Process and apparatus for cutting glass
IPC: C03B33/09
Filed: 1965-02-04
Abstract: <PICT:1096561/C1/1> Glass is cut with a wheel having a cutting edge with an included angle of 150-160 degrees and using a heavy pressure, e.g. 20-55 pounds. By this means the initial fissure is propagated substantially throughout the whole of the glass thickness and unwanted glass broken away by applying mechanical or thermal shocks to it.  In an automatic machine a glass sheet initially aligned by a rail 30 and stops 11 is supported by air jets 5 and moved by ram-operated suction pads 9, 23, 24 to a position determined by stops 31 beneath a cutting head 16.  The cutting head operating as described above follows a template 12 or is guided by a control mechanism after which the sheet is moved to bring a fresh area beneath the cutting head and the cut area to a nesting position.  At the next movement the cut area arrives at a position above a cullet box and below gas nozzles at positions 34. The gas nozzles are periodically spark ignited to cause the glass 33 surrounding the wanted pieces 36 to break.  The finished pieces are removed by suction discs 27.  The gas nozzles are supplied with oxygen and acetylene from a common mixer or an independent mixer for each nozzle.  The oxygen feed starts before and finishes after the acetylene feed to prevent contamination of the machine or glass.
Patent GB-1503836-A (GB)
Title: Process for the preparation of perfume compositions and perfumed materials and articles
IPC: C11B9/00
Filed: 1976-02-09
Abstract: 1503836 Perfume compositions NAARDEN INTERNATIONAL NV 9 Feb 1976 [11 Feb 1975] 04968/76 Heading A5B [Also in Division C5] Perfume compositions e.g. cosmetics and room deodorants, comprise 4 - methoxybenzonitrile as a perfume.
Patent GB-1368205-A (GB)
Title: High temperature fan construction
IPC: F04D29/58
Filed: 1972-02-03
Abstract: 1368205 Centrifugal pumps WESTINGHOUSE ELECTRIC CORP 3 Feb 1972 [1 March 1971] 5025/72 Heading F1C [Also in Division F2] A fan 10, for use at high temperatures, is mounted on a shaft 12 journalled in bearings 13, 14 and cooled by a medium (e.g. air) drawn along an axial hollow 15 in the shaft, closed adjacent the fan and pumped centrifugally by a radial tube 22, 23 from the hollow 15 when the shaft rotates. The tubes 22, 23 may serve as keys as shown.
Patent GB-752813-A (GB)
Title: Improvements in or relating to dark slides or cassettes for x-ray films or plates
Inventor: HARMER FREDERICK
IPC: G03B42/04
Filed: 1954-02-22
Abstract: 752,813. X-ray apparatus. KODAK, Ltd. Feb. 22, 1955 [Feb. 22, 1954], No. 5127/54. Class 98 (1). A dark slide or cassette consists of a pair of trays 1, 3 and means for securing the trays in superimposition, one of the trays 3 being provided with a pressure-pad 17 of material, such as felt, which extends over the whole area of the other tray 1 and is fixed to a flexible plate 16 which is mounted on a platform 18 for limited movement in a direction normal thereto to allow it to flex. As shown, the trays 1, 3 are hinged at 2 and have overlapping side flanges 8, 9 and butting front and back flanges 10, 11 and 6, 7. The flanges of the upper tray 3 are lined with metal, wood, ebonite or like material 12. The platform 18 is formed on tray 1 and the plate 8 is fixed to it by rivets 20 which allow slight movement. When the trays are brought together, plate 16 flexes a little to apply even pressure to a film placed on pad 17. The trays are held closed by spring clips 4. Feet 13 are fitted on tray 1.
Patent GB-565287-A (GB)
Title: Improvements relating to antenna systems
IPC: H01Q9/34
Filed: 1943-04-02
Abstract: 565,287. Aerials. STANDARD TELEPHONES & CABLES, Ltd. April 2, 1943, No. 5297. Convention date, April 4, 1942. [Class 40 (v)] Relates to aerial systems of the kind described in Specification 556,093 in which high-frequency energy is supplied to a hollow tower or tubular member (or equivalent system of wires) through a feeder extending through the tower &c. and an impedance element capacitively or inductively coupled to the upper or distant end of the tower or tube &c. According to the present invention, the feeder is coupled to the impedance element by a network which preserves the balance of the feeder line although the. aerial and impedance element constitute an unbalanced load. In Fig. 1, the impedance element is a capacity " hat " 13 capacitively connected to the aerial 10 insulated from the supporting tower 12. The feeder 16 is connected by a network 17 comprising condensers 18, 18a and an inductance 19 (as described in Specification 488,912) to the " hat " 13 and aerial 10. In Fig. 2, the feeder 16, 21 is similarly connected to a tubular dipole radiator supported by mast 22, capacity elements 23, 23A being adjacent the ends of the tube 20. In a modification, Fig. 3 (not shown), the hollow conical aerial 10, Fig. 1, is replaced by a series of wires attached at their upper ends to a hollow conductive mast. In a further modification, Fig. 4 (not shown), the capacitive elements 23, Fig. 2, are replaced by inductive elements at each end of the tubular aerial. Insulating covers may be provided to protect the inductive elements from sleet &c. The invention may also be used with other aerial structures described in Specification 556,093.