baber/WOPTO huggingface dataset:
Patent GB-1034759-A (GB)
Title: Valve for artificial respiration apparatus
IPC: A62B9/02
Filed: 1965-05-28
Abstract: 1,034,759. Valves. A. LAERDAL. May 28, 1965 [June 15, 1964], No. 22801/65. Heading F2V. [Also in Division A5] A valve for artificial respiration apparatus has a casing part 8 leading to a face mask and another casing part 1 connected to a bag of air or oxygen; a plastics diaphragm 13 provides two closure members controlling the flow of gas to and from the patient. Upon compressing the bag gas flows through a normally-closed slit 17 in the diaphragm apex to the patient, a shoulder portion 15 of the diaphragm being forced more tightly against an annular seating 11 to prevent any communication between the port 8 and exhaust ports 10. Obstruction in the patient's respiratory passages will be apparent since the bag will remain filled. Exhalation into the part 8 closes the slit 17 and unseats the shoulder portion 15 so opening the path to the exhaust ports 10 which are covered by an annular elastic ring 20, the inner edge of which is connected to the port 8. The valve casing is of transparent thermoplastic material.
Patent GB-1510046-A (GB)
Title: Process for the recovery of formaldehyde as hexamine from waste waters
IPC: C07D487/18
Filed: 1976-06-02
Abstract: 1510046 Recovery of formaldehyde as hexamine SOC ITALIANA RESINE SIR SpA 2 June 1976 [11 June 1975] 22801/76 Heading C2C A process for the recovery of formaldehyde as hexamine from a waste water containing formaldehyde together with one or more of formic, acetic or propionic acids comprises reacting at a temperature of from 0 to 90 C. said waste water, with an amount of ammonia substantially equal to that required for converting the formaldehyde present in said waste water into hexamine, thereby to obtain an aqueous solution containing hexamine and said carboxylic acids, and evaporating said aqueous solution at a temperature of from 20 to 120 C. during a period of from 3 seconds to 2 hours, thereby to recover said hexamine in solid form.
Patent GB-760671-A (GB)
Title: Improvements in and relating to optical elements
IPC: C03C17/36
Filed: 1950-09-18
Abstract: 760,671. Coating glass. COWAN, D. M. Sept. 14, 1951 [Sept. 18, 1950]. No. 22865/50. Class 56 [Also in Group XX] A glass element, e.g. a prism, having a metallic reflecting deposit on one surface is manufactured or repaired by fusing enamel on at least part of a surface or surfaces adjacent that on which the metallic deposit is to be provided thereby rendering the surfaces relatively non- reflecting internally of the element, or providing an internally facing coloured surface, and subsequently applying the metallic deposit. By this means any of the deposit which falls on the enamelled surface need not be removed. The enamel may be in the form of a solution or paste containing ground glass, or containing constituents which on fusion will form a coloured glass layer, the enamel having a fusion temperature lower than that of the element. The metallic deposit, e.g. of silver, may be protected by electrodeposition of a layer of lead or copper. Reference has been directed by the Comptroller to Specification 662,992.
Patent GB-828268-A (GB)
Title: A box for packing a tool such as a milling cutter
IPC: B65D81/05
Filed: 1957-07-19
Abstract: 828,268. Boxes for tools &c. RUGGEBERG, A. R., and RUGGEBERG, H. July 19, 1957 [Aug. 27, 1956], No. 22893/57. Class 18. A box for tools  having shafts, e.g. hard-metal milling cutters has a transparent cover 5 enclosing the tool head and a yieldable plastics seating 1 formed with a central bore 2 and slots 3 or rings for gripping the tool shaft.  Surrounding the central bore is an annular recess 2a allowing deformation of the walls of the bore 2. The slots 3 may be replaced by gripping rings in the bore 2.
Patent GB-506062-A (GB)
Title: Improvements in or relating to electric secondary batteries
IPC: H01M50/60
Filed: 1937-08-21
Abstract: 506,062. Galvanic batteries. FULLER, L., and SUDLOW, E. W. Aug. 21, 1937, No. 22942. [Class 53] In a dry storage cell having a porous separator, which absorbs the electrolyte, completely surrounding the electrodes, the whole contents of the battery are compressed to exclude as far as possible all air and free electrolyte. The cell is closed by one or more sealing layers, one of which has positive locking means to prevent subsequent movement of the internal structure. The positive plates 12, Fig. 2, and negative plates 14 are arranged with the porous separator 13 between and aroimd them and are compressed laterally until capable of insertion into an ebonite container 10. The separator is made of powdered pumice, kieselguhr or like substances mixed with electrolyte and the effect of pressure is to remove any air or free electrolyte it may contain and ensure good contact with the plates. After insertion in the container, .the plates are covered with the separator composition and a layer 15 of sand and again compressed. A layer of pitch 18 is then applied and while this is still soft an ebonite lid 19 having two or more projecting lugs 20, Fig. 3, sliding in slots 21, and a vent, are placed over it and forced downwards to maintain the whole of the contents of the cell in compression. The lid 19 is held in position by pieces of ebonite 22, Fig. 3, placed in slots 41 and the container is then sealed with a further layer of pitch. In a .modification, Fig. 4 (not shown), a key rotatable about a terminal enters a slot in the side of the ebonite container. The vent consists of an upper cup-shaped portion 32, Fig. 6, containing electrolyte and covered by a screw cap 33, in which is a small vent hole. Below the cup portion 32 is a cylindrical neck, closed at one or both ends by discs 36 of perforated lead or gauze, and containing glass wool. Electrolyte is thus able to percolate through to the cell as gas is evolved therefrom. Alternatively, the vent may be fitted with a thin hollow plunger 38, Fig. 7, fitted with a spring valve 40 which may be opened by manual depression of the knob 39 to allow electrolyte to pass to the cell, gases being able to pass through the hollow plunger. In a modification, the cup portion is placed below the uppermost layer of pitch water being added through a normal vent orifice. A small type of cell is described with reference to Fig. 5 (not shown), in which a lead container forming the negative electrode has its upper edge rolled over to form the positive locking means for the ebonite plate after the contents of the cell have been compressed. In this case, the positive electrode consists of a central lead core surrounded by a mass of active material. The Provisional. Specification also describes the use of a porous or perforated plate between the tops of the plates and the sealing layers, the space between it and the sealing layers being used for the accommodation of electrolyte, a normal type of vent being used.
Patent GB-805689-A (GB)
Title: Improvements in and relating to working of placers
IPC: E21C45/00
Filed: 1957-07-22
Abstract: 805,689. Mineral-mining. LITWINOV, N. July 22, 1957, No. 23066/57. Class 68(1) When the gravel has been removed from the bed rock 7 in a placer miner the bed rock is coated with a layer of plastic material 14 which penetrates the cavities in the face of the bed rock to entrap the particles 12 of precious metal in the cavities. The layer of material together with the entrapped particles is then removed from the bed rock after the material has hardened.
Patent GB-1432118-A (GB)
Title: Lattice welding machines
IPC: B23K11/14
Filed: 1974-05-23
Abstract: 1432118 Variabfe-speed ratchet gear EVG ENTWICKLUNGS U VERTWERTUNGS GmbH 23 May 1974 [30 May 1973] 23136/74 Heading F2D Intermittent rotary motion is imparted to a shaft 13 by either of a pair of linkages each comprising a bar 7, 8, Fig. 2, pivotally connected at one end 5a, 6a to a curved arm 3 oscillated about a fixed pivot 4 by a to-and-fro mechanism, e.g. a crank 1 and connecting rod 2, and at the other end 9a, 10a to a respective member 9, 10 rotatable on the shaft 13 and carrying means such as pawls 11, 12 engageable with a toothed wheel 14 secured to the shaft. The arrangement is such that when the crank 1 is displaced 180 degrees from the position shown the two pivots 9a, 10a are in alignment with each other at a point which lies at the centre of an arc which passes through the pivots 4, 5a, 6a so that brackets 5, 6 may be adjusted on the arm 3, which may have calibrations, to vary the transmission ratio of each linkage without moving the members 9, 10. Either of pawls 11, 12 is selectively movable into contact with the toothed wheel by means (not shown) such as a fluid-operated piston or a cam lever mechanism. Reverse movement of the wheel 14 is prevented by a spring-loaded pawl 15. The apparatus is for use in a welding machine for continuous reinforcement mat for concrete, the shaft 13 operating a conveyer by which the mat is advanced, and the selection of the transmission linkages being programmed so that transverse reinforcement rods are positioned at closer intervals where the mat is to be cut. More than two members 9, 10 may be employed, in which case each member or pair of members may have its own wheel 14. The brackets 5, 6 may be mounted on adjacent slideways so that they do not interfere with each other when adjusted close together. In a modification, a wheel 29, Fig. 6, fixed to the shaft 13 is flanked by discs 9, 10 in place of the members 9, 10 of Fig. 2, and the transmission ratio is selected by a clutch member 28 slidable on peripheral teeth on the wheel and having toothed rings 26, 27 for co-operation with toothed rings 24, 25 on the discs. A further modification is referred to employing a programmed electromagnetic clutch for transmission ratio selection.
Patent GB-1350830-A (GB)
Title: Process and equipment for preparing underground drifts eg tunnels channels and shafts or the like
IPC: E21D9/087
Filed: 1971-04-19
Abstract: 1350830 Tunnelling BANYASZATI TERVEZO INTEZET 19 April 1971 [7 March 1970] 23194/71 Heading E1F Tunnelling equipment involves a tunnelling unit A, B, which as it advances, draws behind it into the tunnel it forms a gradually increasing number of tunnel liners C. Preferably the tunnelling unit comprises a shield A and an earth-excavating unit B positioned within the shield A, which consists of a cutting edgecarrying unit A 1 , a trunk unit A 2  and a tail unit A 3 . The units A 1 , A 2  and A 3  are so connected together as to be movable with respect to one another. The excavating unit involves a casing that is rotatable about the longitudinal axis of the shield, is reciprocable along said axis, encloses a bucket chain excavator that projects through an opening in a roller-supported, disc-shaped front plate of the casing. The liners C are connected to one another by tensile members D provided with elastic waterproofing elements E. The tensile members D are inflatable. At first the tunnelling unit A, B is advanced stepwise, there being provided for this purpose in the preferred embodiment rams between the trunk unit A, and the anchorable tail unit A 3 . After the unit A, B by this method of advance has drawn into the tunnels sufficient liners to absorb the advancing thrust of the rams by frictional contact of the liners with the tunnel, the tail unit A 3  is no longer anchored during advance of the tunnelling unit. Advance then of the liners after the cutting unit A, B has been advanced in the tunnel is by inflation of the tensile members D, which cause the liners C to advance unit by unit as the rams 3 are contracted.
Patent GB-694169-A (GB)
Title: An improved driving device for the spindles of spinning machines, doubling machines and the like
IPC: D01H1/241
Filed: 1949-09-07
Abstract: 694,169. Textile spindle driving arrangements. MACOTEX SOC. AR.L., and PEROTTI, A. Sept. 7, 1949, No. 23211/49. Class 120 (ii) The spindles on each side of a spinning, doubling or like machine are driven by belts 7 from pulleys 5, the pulleys being revolved by gearing from shafts 1 on each side of the machine. The belts are tensioned by pulleys 9 urged against the belt tension by springs 12. The shafts 1 may comprise sections joined by flexible couplings comprising chains having double links, each chain passing over two sprocket wheels at the adjacent ends of the sections.
Patent GB-1191723-A (GB)
Title: Conveyor System
IPC: B61B10/02
Filed: 1967-05-18
Abstract: 1,191,723. Conveyor systems. SOC. F.A.T.A. S.R.L. 18 May, 1967 [16 Feb., 1967], No. 23244/67. Heading B7L. A conveyer system comprises a rail 1, Fig. 1, for guiding support rollers 2 of a driving chain 3 having a depending driving dog 21, and a rail 4 for supporting load carriers 5 each having a front trolley 7 and a rear trolley 8, the front trolley 7 having a pivoted drive dog 14, Fig. 3, and a pivoted retainer dog 13, whereas the rear trolley has a fixed substantially horizontal plate 20. When a load carrier e.g. 6, Fig. 1, approaches a stationary carrier 5, the drive dog 14 of the carrier 6 is engaged by the plate 20 of the carrier 5 and thus disengaged from the drive dog 21 of the chain 3. The dogs 13, 14 are provided with counterweights 15, 16.
Patent GB-608235-A (GB)
Title: Improvements relating to stills for the distillation of crude tar or the like
IPC: C10C1/04
Filed: 1945-09-10
Abstract: <PICT:0608235/III/1> <PICT:0608235/III/2> <PICT:0608235/III/3> In a pipe-still, particularly for the continuou distillation of coal tar or mineral oil, the distillation coil is arranged above a preheating coil around a central uptake for furnace gases which pass from the uptake to flow downwards over the coils in passages, and adjustable means, e.g. dampers, are provided for byepassing some at least of the furnace gases to flow only over the preheating coil.  In addition, dampers may be provided to isolate the distillation coil completely from the furnace gases.  The dampers are particularly useful when a still fired by solid fuel is being started up or shut down.  In the distillation of a feed which contains water, the latter may be flashed off as steam in a flash chamber connected between the upper end of the preheating coil and the lower end of the distillation coil.  Solid fuel, supplied through hopper 2, Fig. 1, is burned in combustion chamber 1.  The hot gases rise through central uptake 5, bounded by circular wall 4, and enter four radial passages 6 bounded by the roof 7, horizontal walls 8 and vertical walls 9, Fig. 2.  The gases then pass down over distillation coil 11 and preheating coil 12 which are supported, by flanges 20, in flues 17 bounded by walls 10. The combustion gases only pass over the straight lengths 18 of each lap of the coils, and these carry fins. Byepass passages 25 controlled by dampers 26 are provided between the uptake 5 and the part of each flue 17 which lies between coils 11 and 12.  These dampers are manually operated by handles 27 located in annular space 28 surrounding the central uptake.  The flow through the top passages 6 is controlled by dampers 24. Specification 608,301 is referred to.
Patent GB-235723-A (GB)
Abstract: 235,723. Levy, W., Goodwin, H., and Adolph, C. F. June 30,1924. Magneto-microphonic relays; diaphragms.-The soft iron &c. diaphragm 5, to which is secured a carbon plate 4 forming one electrode of a granular microphone, is of square shape and is loosely supported by means of its extreme corners, which are preferaby bent over, as shown, to form feet, on a flange on the microphone casing. A ring 7 of mica is arranged behind the diaphragm to cover the spaces. The microphone casing 1 is screwed into a cap 12 adapted to screw on to an ordinary telephone earpiece. Preferably the unit is mounted to swivel on a bracket 13 carried by a box 14 containing the usual transformer and provided with the necessary terminals. According to the Provisional Specification, the diaphragm may be of carbon with a small plate of magnetic material secured to it, or of mica with discs of carbon and magnetic material on opposite sides. The armature may be offset from the diaphragm. The diaphragm may be triangular or star-shaped.
Patent GB-915506-A (GB)
Title: Improvements in or relating to the removal of sheaths from nuclear reactor fuel elements
Inventor: MOORHOUSE DENNIS
IPC: G21C19/36
Filed: 1959-07-09
Abstract: 915,506. Removing canning from nuclear fuel. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. July 1, 1960 [July 9, 1959], No. 23605/59. Class 39 (4). [Also in Group XXII] Apparatus for removing a sheath from a nuclear fuel rod 24 comprises cutter wheels 10 which divide the sheath into longitudinal portions end plough blades 17 which operate in the cuts made by wheels 10 to peel off the portions; at least one and preferably all of the wheels are resiliently loaded, e.g. by hydraulic pistons 14, to ensure a constant cutting load. A triangular die may be provided to centre the sheathed fuel rod and crush fins on the sheath before cutting. A ram forces the rod through the die and between the wheels. Specification 905,523 is referred to.
Patent GB-1041174-A (GB)
Title: Production of cyanuric acid
IPC: C07D251/32
Filed: 1963-06-13
Abstract: Cyanuric acid is prepared by passing an intimate mixture of particulate urea with 7 to 40 times its weight of cyanuric acid into a pyrolysis zone in which the mixture is maintained at a temperature of 200-325 DEG  C. in an atmosphere consisting of ammonia or containing ammonia at a partial pressure of at least one atmosphere. This atmosphere can be obtained by maintaining the pyrolysis zone closed to the atmosphere except for the entrance and exit ports, thereby retaining the ammonia generated in situ, or the system can be flushed with ammonia at about atmospheric pressure.  The urea may be in the form of crystals or pills from -15 to -200 mesh (U.S. Standard), and the mixture may be conveyed through the pyrolysis zone by helical screws or pug mill paddles. The cyanuric acid product may be recycled.
Patent GB-366902-A (GB)
Title: Apparatus for applying protective coverings to thread cores
IPC: B23P19/04
Filed: 1930-08-07
Abstract: 366,902. Applying protective coverings to bobbins. SONOCO PRODUCTS CO., Hartsville, South Carolina, U.S.A.- (Assignees of Coker, C. W. ; Hartsville, South Carolina, U.S.A.) Aug. 7, 1930, No. 23732. Convention date, Aug. 7, 1929. Void [Published under Sect. 91 of the Acts]. [Class 120 (iii).] Protective coverings are applied to the tips of bobbins by a machine which places a blank of deformable material upon the tip, and then in a separate operation spins the blank into intimate contact with the tip. A bobbin 15 is placed on a mandrel 16 in the position a on a table 14 which is rotated intermittently through 90‹ by bevel gears 53, 54, driven through a pinion 49 and a mutilated gear 48 from gears 43, 42 and a pulley 41. The engagement of the toothed portion of the gear 48 with the pinion 49 brings the bobbin into position b under a punch 60 which is reciprocated by a crank 74 on a shaft 75 oscillated through cranks 78, 80 and a connecting-rod 79 from a shaft 55 which is turned periodically by the engagement of the mutilated gear 48 with a pinion 50. The punch head 61 cuts a blank from a strip 67 of lead or other material, and applies it to the tip 30 of the bobbin, which is then moved through 90‹ to the position c. In this position the foot 18 of the mandrel 16 projects over the cut-away edge 27 of a stationary plate 19, so that when the shaft 55 is rotated, a cam 28 engaging the foot 18 raises the mandrel 16 against a spring 26 until the bobbin is engaged by a rotating die 33 which swages or spins the blank into intimate contact with the tip. A further 90‹ rotation of the table causes the mandrel 16 to be lowered and brought into the position d, where the finished bobbin is removed. The strip 67 of lead or other material is fed periodically from a roll 68 by rollers 69, 70 rotated by a ratchet gear 85, 86 actuated through rods 88, 89 from the oscillating shaft 75. The rod 89 is connected to the shaft 75 by a lost-motion device consisting of a pin 91 on the shaft free to oscillate within a slot 92 in the half bearing 93 which is attached to the end 94 of the shaft.
Patent GB-1506053-A (GB)
Title: Apparatus and method for forming permanent magnets by moulding
IPC: H01F13/00
Filed: 1975-05-31
Abstract: 1506053 Moulding magnets MAGNETIC POLYMERS Ltd 7 May 1976 [31 May 1975] 23746/75 Heading B5A [Also in Divisions C3 and H1] Apparatus for moulding a magnet comprises upper and lower magnetic cores between which is a non-magnetic removable mould plate 12; the upper core being vertically movable by an hydraulic ram 14; the surfaces of the cores defining walls of a cavity 15 in which the mould plate is disposed, which is bounded by non- magnetic sidewalls 16 abutting mould cheeks 17 when the mould is closed. The cores are surrounded by coils 10, 11 and contain heater coils 20, 21. Magnetically conducting tiebars 23, 24 connect magnetically conducting end plate 22 to bed 13. The mould plate contains 36 square holes which are charged with a composition of SmCo 5  alloy powder with a thermosetting polyester resin binder. Ram pressure is applied while the apparatus is heated, while a magnetic field is applied to the composition by energizing coils 18, 19 to align the magnetic particle remains. A modified mould plate (Fig. 2, not shown) enables injection or transfer moulding to be employed to form the magnets, and other cobalt rare earth alloy powders e.g. Mischmetall Co 5 , PrCo 5 , Sm 2 Co 17 , SmCo 5 , PrSmCo 5  may be used. Also strontium ferrite, AlNiCoFe alloy, iron oxide, or electrolytic soft iron powders may be used. The binder resin may be a thermoplastic polymer.
Patent GB-948016-A (GB)
Title: Acetals of dialdehyde polysaccharides
IPC: C08B37/00
Filed: 1961-06-30
Abstract: An acetal is produced by the interaction of a dialdehyde polysaccharide, having a degree of oxidation of at least 75% and a stoichiometric excess of methanol or ethanol (assuming no cross-linking) in the presence of sulphuric or p-toluene-sulphonic acid as catalyst.  A 40% aqueous sulphuric acid solution may be employed.  The dialdehyde polysaccharide may be derived from maize, wheat, potato, rice, or tapioca starch, amylose, dextran, algin, inulin, or cellulose.  It preferably has a degree of oxidation of at least 89%. 20-70 moles of alcohol and 0.04-0.1 mole of catalyst per mole of dialdehyde polysaccharide polymer unit are preferably employed.  The reaction may be carried out at a temperature of 60-100 DEG C. a pressure of 1 atmos. to 30 lb./sq.inch, and a period of 1-20 hrs. The degree of conversion to methyl and ethyl acetal may be 32.5 and 29.5% respectively. The acetal may be precipitated from solution in excess reactant alcohol with isopropanol or a mixture of isopropanol and water. The acetal is soluble in benzene, toluene, ethylene glycol monoethyl and monobutyl ether, acetone, methyl ethyl ketone, propyl acetate, chloroform, dimethylformamide, and dioxane.