baber/WOPTO huggingface dataset:
Patent GB-356448-A (GB)
Title: Improvements in steam boilers
IPC: F22B33/04
Filed: 1930-08-23
Abstract: 356,448. Composite steam boilers. TETLOW, C. E., The Grange, Withins Road, Hollinwood, Oldham. Aug. 23, 1930, No. 25197. [Class 123 (ii).] A water-tube section consisting of vertical tubes T connected to upper and lower horizontal drums L, Ll is arranged at the side of or between one or more Cornish or like internally fired flue boilers B, the lower drum being disposed below the flue boilers and the upper drum being so disposed as to serve as a steam receiver for the flue boilers. The walls of the downtakes of the flue boilers are formed of vertical feedwater heating tubes. The gases pass from the downtakes forwardly along flues beneath the flue boilers and then back over the tubes of the water-tube section. The flue boilers may be supported on hollow chambers through which the air for combustion is passed. The feedwater heating tubes may be formed in pairs with common inlet and outlet connections to upper and lower drums.
Patent GB-669276-A (GB)
Title: Improvements in or relating to a tractor hay loading attachment
IPC: A01D87/12
Filed: 1950-10-17
Abstract: 669,276. Hay-loaders. TROY, R. Oct. 17, 1950. No. 25238/50. Class 6(iii) [Also in Group XXX] A tractor-drawn hay-loader comprises a two-wheeled axle 7 pivotally linked to a hay-float comprising tines 1, 3, secured to a back-rack 4 which is connected directly to the tractor lift-links 13, so that operation of the hydraulic lift causes the float to tilt backwardly about the axle 7, Fig 3. The back - rack is curved to conform to the shape of a hay-cock 26 and is inclined to the tined base 1, 3. The wheeled axle 7 is connected to the tractor by a draw-bar 11 and to the back-rack by links 10. Convergent arms 14 form extensions of the lift-links and carry rollers 15 which slide in a slotted member 16 secured to the uprights of the back-rack. A spring-loaded bolt 18 on one of the arms 14 engages an aperture in one of the back-rack members 6, to prevent the float from tilting during loading. After loading, a cable 27 is secured around the hay, and, after withdrawal of the bolt 18, the float is tilted about the wheel axle, (Fig. 3), for transport.
Patent GB-161898-A (GB)
Title: Improvements in or relating to small arms
IPC: F41A15/08
Filed: 1920-09-01
Abstract: 161,898. Vickers, Ltd., and Stewart, J. Sept. 1, 1920. Breech actions, hinged breech-block.-Smallbore and other Martini-action small-arms are provided with a safety device, which is moved automatically into safe position, blocking the trigger, by the downward movement of the breech-block, and can be returned manually to permit firing. The device comprises an arm B pivoted on the pin a<4> of, and extending through a slot a<5> in, the extractor A', and fitted with a spring-pressed guided plunger C adapted to engage either of two notches a<2x> in the trigger limb a<2>. Fig. 2 shows the firing position in which a projection b on the arm B is clear of the trigger limb. On lowering the breech-block A to operate the extractor A<4> after firing, the part A<5> of the extractor depresses the arm B and brings the projection b into position blocking the trigger limb as shown in Fig. 3. The arm can be raised to permit firing by pressing on the projection b<1> with the finger, the curved parts a<x> of the trigger and b<x> of the arm limiting the movement. As the trigger is controlled by the spring C' of the plunger, its usual leaf spring can be dispensed with.
Patent GB-518726-A (GB)
Title: Improvements in and relating to the case-hardening of ferrous articles
IPC: C23C8/32
Filed: 1938-08-29
Abstract: 518,726. Case hardening ferrous articles. COWAN, R. J. Aug. 29, 1938, No. 25293. Convention date, Oct. 14, 1937. Drawings to Specification. [Class 72] In the case-hardening of ferrous articles while they are being traversed through a chamber, the articles are first passed through a zone of increasing temperature and thereafter through a zone of higher and substantially uniform temperature, a nitrogenizing gas being introduced into the latter zone, and a carbonizing gas independently of the nitrogenizing gas. The carbonizing gas may be introduced at the commencement of the heating-up zone or alternatively with the nitrogenizing gas which is introduced at a plurality of points and the gases may be bled from the chamber either from the zone of uniform temperature or from the zone of increasing temperature or from both. The nitrogenizing gas may be introduced in a direction transversly of the length of the chamber and is at a controlled temperature below its breakdown temperature. As a nitrogenizing gas instead of ammonia, compound such as formamide, hydrocyanic acid, nitrobenzene, urea and pyridine may be used and the carbonizing gas may be coke oven gas, charcoal gas, natural gas, propane or butane alone or mixed with furnace, flue or fuel gases.
Patent GB-384718-A (GB)
Title: Improvements in trousers, knickers, and the like
IPC: A41F9/02
Filed: 1931-09-09
Abstract: 384,718. Wearing-apparel. HARMER, R. T., St. Andrew's Work., Norwich. Sept. 9, 1931, No. 25306. [Class 141.] Means for adjusting the fit of the waist of trousers, knickers, and the like, comprise a pair of non-elastic straps of unequal length fitted at each side of the waist. The longer strap 5, which is secured at or near the middle back seam 6 of the garment of each pair is concealed for part of its length, passing through a slot 8 in the waistband, and the shorter strap 1, which is secured at or near the side seam 4, carries a buckle 2 so that the free ends of the straps 1, 5 may be adjustably secured together. In a modification, the strap 5 is secured at or near the side seam 4 and the strap 1, carrying the buckle 2, at or near the middle back seam 6.
Patent GB-895018-A (GB)
Title: Improvements in or relating to electron discharge devices
Inventor: MCGEE JAMES DWYER
IPC: H01J31/26
Filed: 1957-08-13
Abstract: 895,018. Television pick-up tubes. ELECTRIC & MUSICAL INDUSTRIES Ltd. Aug. 8, 1958 [Aug. 13, 1957], No. 25462/57. Class 39(1). An electron discharge device has two spaced photosensitive surfaces so disposed relatively to one another that light projected on the side of one surface remote from the other surface and transmitted through said one surface is not incident on said other surface. The two surfaces may be photoemissive as in the television pick-up tube shown in Fig. 1 in which an optical image is projected on to photocathode 2, the photoelectrons produced being focused on to a target 3, for example a glass plate, by parallel electric and magnetic fields produced by electrodes 6 and coil 7 respectively. Coil 7 may be unevenly wound to produce a more uniform field. The envelope 1 is curved into an arc of a circle with surfaces 2, 3 lying on the bounding radii, so that light from the spot scanning mosaic 4 on the side of target 3 remote from surface 2 cannot reach the latter. The envelope may be curved still further to prevent light transmitted through photocathode 2 from reaching target 3. The charge pattern laid down leaks through the target plate and modifies the photoemission from mosaic 4 caused by the scanning light spot, electrons from regions having potentials lower than that of the grid 5 passing through the grid and being deflected by electrode 10 into an electron multiplier 11, 12 thereby producing the output signal. Either or all of the side wall of the envelope and the internal surfaces of the electrodes 6 and of the coil 7 may be coated with black light absorbing material. In another embodiment Fig. 3 (not shown) the envelope portion between photocathode 2 and target 3 is straight and surfaces 2, 3 are parallel to each other but displaced so that the line joining their centres is oblique to the surfaces. The ends of the coil 7 may be straight or, according to the Provisional Specification, oblique.
Patent GB-1311329-A (GB)
Title: Xerographic plate
IPC: G03G5/043
Filed: 1970-05-28
Abstract: 1311329 Xerographic plate XEROX CORP 28 May 1970 [3 June 1969] 25648/70 Heading H1K A xerographic plate comprises two photoconductive layers, the first layer 20-200 microns thick comprising vitreous selenium doped with 20-10,000 p.p.m. of halogen and overlying the first layer a layer of pure vitreous selenium 5 to 20 microns thick. The two layers may be self-supporting or have a support comprising a sheet, web or cylinder of brass, Al, Au, Pt, steel or paper, plastics or glass coated with Al, Cu 2 I 2 , Cr or SnO 2 . Any halogen may be used but chlorine is preferred. The first layer may be an alloy of Se-As doped with a halogen.
Patent GB-893697-A (GB)
Title: Improvements in a package and its manufacture
IPC: B65B51/24
Filed: 1958-08-11
Abstract: 893,697. Seaming; severing by burning. AMERICAN CYANAMID CO. Aug. 11, 1958 [Sept. 24, 1957], No. 25705/58. Classes 31 (1) and 42 (1). [Also in Group XVII] Envelopes are made by folding a web longitudinally, clamping it transversely at spaced intervals and applying radiant heat between the clamps to cut the web and seal the cut edges to form side closing and enlarged corner beads. The envelopes are then filled and their upper ends clamped beneath their mouths, radiant heat being applied to the latter to form a beaded closure seal. Making envelopes.-A thermoplastic web of, for example, polymeric ethylene terephthalate ester film, passes over guide rollers 44, 46 and between static eliminators 45 to folding members 47, 48 which double it longitudinally (Fig. 6). The fold is rendered sharp by pressing between heated blocks 50, 51 and the web is forwarded between sealing and severing members 60, 61. The members 60, 61 comprise respectively fixed and movable blocks 60, 61 (Figs. 9, 10, 14) the faces of which are slotted at 63 and 91 corresponding to the positions of transverse sealing and severing. Areas corresponding to the envelope sides may be relieved as at 65, 94. The slots lead into clearance apertures 70, 92. Heated wires 71 mounted on a head 74 are movable within the slots 63 by pneumatic cylinder means 81 and when the web has been clamped, the wires approach but do not contact the material to cause it to sever and form beaded seams 34. The slots 63, 91 widen in the vicinity of the fold so that the corners of the envelope have larger beads 35. The heat may be applied in two stages. Air from jets 105 cools the seams and together with further jets through passages 69, 98 eject the envelopes when the members move apart under the action of a pneumatic cylinder 100. The envelopes fall on to a shoot 113. The web is fed intermittently by a reciprocating blade 106 engaging from within the web fold, the rearmost transverse seam. Filling and sealing the envelopes.-The envelopes may have a suture 37 and card 38 (Fig. 2) placed within them and are then sterilized and filled with sterile tubing fluid. Filling is carried out by unspecified known means. The filled envelopes are placed in a horizontally movable holder 212 (Figs. 5, 16, 17), one half of which may be loaded while the other half is in the sealing position. Sealing is carried out by fixed and movable jaws 202, 203, the latter being connected by rods 204 to a pneumatic piston and cylinder means 207, and a heated tape 216. The tape, retained stretched by springs 219 is brought adjacent the envelope lips after clamping of the material just below them by the jaws. The lips melt to form a sealing bead 41. Operation of the jaws and tape is automatic and is timed, movement of a cam 214 on the holder 212 past a switch 215 initiating the cycle. Specification 747,162 is referred to.
Patent GB-171541-A (GB)
Title: Wall construction
IPC: E04B2/28
Filed: 1920-09-07
Abstract: 171,541. Wagner, H. Sept. 7, 1920. Building - blocks, special shapes of. - Double and hollow walls are formed of inner and outer channel-shaped blocks which are provided at one end with a bead 4 and at the other end with a groove 5, both on the centre line of the body. The outer blocks are made of waterproof concrete and the inner blocks of breeze concrete. An L-shaped outer block 12 may be used on the corner instead of the wall blocks, and the wall thickness may comprise three or more blocks.
Patent GB-1037425-A (GB)
Title: Support and assembly of support and connector for a printed circuit board
IPC: H05K9/00
Filed: 1963-06-28
Abstract: 1,037,425. Mounting electrical equipment. SPERRY RAND CORPORATION. June 28, 1963 [July 20, 1962], No. 25807/63. Heading H1R. [Also in Division H2] A receptacle for a printed circuit board 100, Fig. 1, comprises a peripheral wall, one section 120 of which has a plurality of apertures 130 in a predetermined pattern, and a connector 200, Fig. 2, for use with the circuit board 100, is provided with a code bar 206 having a plurality of projections 208 which engage apertures 130 when the circuit board 100 engages the connector 200. The peripheral wall also comprises side frames 104, 106, having cleats 108 for holding the board 100, and an L-shaped end section 110 which may have a projection 116 for riveting into the board; section 120 may have a similar projection 126, and both end sections 110, 120 may have pegs 128 for staking to the board. The peripheral wall may be made of plastics or metal, preferably of cold rolled steel; if metallic, it may be used for shielding or grounding connections. End section 120 is provided with a plurality of scored sections 132 removable by the application of force from inside the wall, which are removed as required to form the predetermined pattern of apertures 130; the apertures may be identified by numerals 136. Springs 134 on the sideframes of the receptacle adjacent end section 110 act as clamps and shock-absorbers. The code bar 206, which is mounted on the side of connector 200 adapted to receive end 102 of circuit board 100, comprises a plurality of projections 208 scored at 208a so that they may readily be removed by bending. A code strip 212, e.g. of plastics, may be attached to the connector 200.
Patent GB-258143-A (GB)
Abstract: 258,143. Holmes, E. C. Jan. 11, 1926. Moulding-machines.-Moulds for spirally fluted spikes &c. are made by a machine having spiral patterns 9 rotatably mounted in a carrier 8 which is movable, relatively to the mould table 6<a>, to insert and withdraw the patterns. Pins 20 projecting from guide apertures in a stationary plate 19 engage the threads of the patterns and thus give the requisite spiral movement. The carrier 8 is moved by racks 11, gearing 13 and a handle 16, the upper position being determined by a notch 17 in an adjustable plate 18. The patterns 9 may operate through fixed patterns 22 to form recesses for the heads of the spikes, or complementary impressions prepared in another flask may be used.
Patent GB-361981-A (GB)
Title: Improvements in or relating to the manufacture of natural rubber and artificial rubber-like masses
IPC: C08K5/17
Filed: 1930-08-30
Abstract: An antiager for rubber comprises the product of ar - tetrahydro - a - naphthylamine and aldehydes containing two or more carbon atoms condensed in the presence of water soluble alcohols and acids.  If desired the products may be treated with water.  The products are yellowish, odourless, extremely finely divided powders, difficultly soluble in alcohol and readily soluble in benzene, acetone, and acetic ester.  The condensation product of ar-tetrahydro-a  - naphthylamine and aldol which melts from 140-150 DEG  C. is mentioned.  Specification 352,549, [Group V], is referred to.ALSO:The ageing of rubber and the like is retarded by adding to the mix products obtained by condensing ar-tetrahydro-alpha-naphthylamine with aliphatic aldehydes containing two or more carbon atoms, in the presence of water soluble alcohols and acids, and if desired, subsequently treating the resulting products with water.  The products are yellowish, odourless, extremely finely divided powders, difficultly soluble in alcohol, and readily soluble in benzene, acetone and acetic ester.  In an example the condensation product from ar-tetrahydro-alpha-naphthylamine and aldol which melts between 140-150 DEG  C. is compared under the same conditions with alpha-naphthylamine aldol condensation product.  Specification 352,549 is referred to.
Patent GB-1336095-A (GB)
Title: Threshold elements for detonators
IPC: F42B3/14
Filed: 1972-06-02
Abstract: 1336095 Spark gaps FRANCE ARMED FORCES MINISTER OF 2 June 1972 [8 June 1971] 25989/72 Heading H1D [Also in Divisions H2 and F3] A device which permits current to flow from a supply to a device such as a detonator only when the voltage exceeds a preset level comprises two metal conductor elements 3 which are connected at one end to the supply and at the other end to the detonator, one element being divided by an adjustable spark gap 5 which conducts only when its breakdown voltage is exceeded, the metal parts being embedded in a ceramic body 1 which is coated with metal to which the elements 3 and a casing 2 are soldered or brazed. The spark gap is adjusted by means of screw 4.
Patent GB-150965-A (GB)
Title: Improvements in or relating to reinforced concrete buildings and other works
IPC: E04B1/20
Filed: 1920-09-10
Abstract: 150,965. Lancette, C. J. M. Sept. 11, 1919, [Convention date]. Walls; roofs; roof gut. ters; columns; stairs.- Buildings and other structures are formed of precast slabs with projecting eyes 4, 6, Fig. 1, the edges on one side of the eyes being rabbeted or stepped to interlock, and on the other side, flared and roughened portions 12, 13 are provided. The eyes of adjacent slabs are connected by rods or pins, and the joints are grouted up flush. Roofing slabs are similarly connected in rows and are laid directly on the principal rafters and connected thereto by eyes as shown in Fig. 3. The Specification as open to inspection under Sect. 91 (3) (a) comprises also double walls formed of storey-high slabs with bays complete; column constructions as shown in Fig. 2 (Cancelled) and Fig. 6 (Cancelled) with slab connexions thereto. Hollow wall-beams may be formed integral with a balcony or a cornice, the beams supporting the floor and ceiling slabs. Eaves cornices are formed on the outer slabs and gutters on the lower roofing slabs. For domed roofs, curved sector-shaped slabs are connected by eyes and rabbeted joints, as described above. Staircases are formed in one piece with eyes and joined direct to the walls. This subject-matter does not appear in the Specification as accepted.
Patent GB-407098-A (GB)
Title: Improved method of, and means for, controlling the output of compression refrigerating apparatus
IPC: F25B49/02
Filed: 1932-09-20
Abstract: 407,098. Regulating compression. LIGHTFOOT REFRIGERATION CO., Ltd., and SINCLAIR, W., Bush House, Aldwych, London. Sept. 20, 1932, No. 26136. [Class 8 (i).] The output of compression refrigerating apparatus is automatically adjusted by temperature controlled means which control the clearance of the compressor. The clearance adjusting device may be that described in Specification 383,363. A reversible electric motor 12 drives an overhead shaft 14 operating the clearance adjusting devices 11. The motor circuit is opened and closed by thermostats 17, 18 in a water tank which is maintained between prescribed temperature limits by the refrigerating means ; the thermostats actuate switches 17<a>, 18a controlling solenoids 19, 20 to shift a rod 21 actuating switches which reverse the motor. A limiting switch comprising a movable contact 24 and a fixed contact 25 having insulated ends 25<a>, and a slipping clutch may be provided to avoid damage by overrunning. The clearance adjustment is mitigated by provision of a clockwork &c. contact drum 26 having tapered contacts 26<a> co-operating with an adjustable contact 28, the adjustment being such as to allow the compressor time during each contact period to influence the temperature of the tank. A switch 30 controlled by the oil pressure adjusts the compressors to full clearance when the oil pressure falls below a safe limit.
Patent GB-1481473-A (GB)
Title: Vent valve
IPC: F16K24/00
Filed: 1974-06-12
Abstract: 1481473 Valves WASO Ltd 9 June 1975 [12 June 1974] 26154/74 Heading F2V A vent valve for a vehicle fuel tank filler cap 1 has a ball bearing 32 biased against a brass seat 30 by a second ball bearing 35 of greater mass housed in a tapered blind bore 34 and acting via a lever 37. A phosphor-bronze spring 36 may supplement the biasing force. The lever has two pivot lugs extending into recesses in the central boss 6 of the cap and an axle 39 is located over the lugs and is retained in position by a cover plate 11 held in place by screws 9, 10. A stiff plastics seal 20 reinforced with metal 21 and biased by a spring 22 engages the end of a filler pipe 3 when the cap is secured thereto by lugs (17, 18) on the cover 11; a third radially movable lug 19 may be provided to act as a lock.
Patent GB-1436023-A (GB)
Title: Production of synthetic anhydrite
IPC: C04B11/05
Filed: 1974-06-13
Abstract: 1436023 Synthetic anhydrite BAYER AG 13 June 1974 [16 June 1973] 26224/74 Heading C1A Synthetic anhydrite is produced from crude acid-containing anhydrite obtained as residue in the production of hydrofluoric acid from fluorospar and sulphuric acid, by suspending the dried residue in vigorously agitated water, neutralizing the suspension and separating the anhydrite from the aqueous phase. The suspension may be ground before separating off the anhydrite. The neutralizing agent may be calcium oxide, hydroxide or carbonate or solutions of potassium or sodium hydroxide. The aqueous phase may be separated by means of hydrocyclones, filters or centrifuges. An activator (preferably sodium or potassium sulphate), which accelerates hydration of the anhydrate binder obtained after the separation of the aqueous phase may be added either before or during the suspension stage. Additives and/or aggregates may be added to the moist anhydrite obtained from the first separation stage and the resulting masses washed up by casting, pressing, granulating or briquetting. The additives used may be plaster of Paris, dry anhydrite or industrial gypsum and the aggregates sand, gravel, pumice, expanded clay or perlite.
Patent GB-789377-A (GB)
Title: Improvements in or relating to buildings
IPC: F24F13/08
Filed: 1954-11-11
Abstract: 789,377. Walls; ventilating tropical buildings. ROWELL, J. C. Feb. 9, 1956 [Nov. 11, 1954], No. 26378/54. Classes 20(4) and 137 A wall of a building, such as for use in tropical countries, comprises two rows. of vertical slats 1, 2, the slats 1 of one row being staggered relatively to those in the other row 2, openings 3 being formed between the slats 1 of the outer row giving access to expansion chambers 4. Air passes through the openings 3 into chambers 4 and' emerges through openings 5 between the slats 2 into the building, rain water being trapped and drained away by the outwardly sloping sill 11. Each slat 1, 2 is of V- section with inturned edges forming channel recesses 7 which engage upstanding lugs 12 on the sill 11. The upper end of each slat 1 has apertured lugs 8 for bolting to a soffit plate 9, secured to a floor or ceiling 10, the upper ends of slats 2 entering slots 13 in plate 9 and being wedged therein by flaps 14. The ends slats 1<SP>1</SP> are shaped as shown and engage the adjacent slat 2. The sill 11 is secured by screws, passing through slots 16 in an upstanding portion 17, to lugs 18 fixed to a wall 15.