baber/WOPTO huggingface dataset:
Patent GB-327991-A (GB)
Title: Improvements in or relating to metal clamps, anchors or the like for timber railway sleepers, piles, posts and the like, and sets or tools for applying the same
IPC: E01B3/06
Filed: 1929-01-12
Abstract: 327,991. Stuart, A. R. Jan. 12, 1929. Sleepers, wood.-Timber clamps, driven endwise into piles, posts, or railway sleepers, consist of two or more metal hoops or bands anchored together by one or more integral or detached metal ties. The clamps may have square edges and be received by prepared cavities or slots in the timber, or they may have edges tapering on one or both sides so as to cut their own way. The clamps may also have a head formed on one or both sides, and a groove or routing may be formed in the timber to receive the head. The. surface of the clamps may be corrugated, serrated, notched or indented. The clamps may consist of two circles A, Fig. 17, ellipses, or rectangular or polygonal figures with rounded angles, and united by a plate H with similar apertures, the heads of the hoops being riveted over the plate. In a modification, Fig. 11, a staple L is driven into the timber within the rings. The clamps may consist of hoops A, Fig. 18, united by integral ties B, B<1>, and may be formed by welding or soldering the free ends of bent metal strips, as shown by Fig. 1. The clamps may be driven in by a punch M, Fig. 23, having slots N to correspond with one or more clamps, and a handle 0. Punches with slots of different depths may be used for driving a clamp by short stages.
Patent GB-679864-A (GB)
Title: Improvements in or relating to a method for the vulcanization of rubber
IPC: C08K5/00
Filed: 1950-01-17
Abstract: Compounds having the general formula <FORM:0679864/IV (b)/1> in which M is a hydrogen atom, a metal, or an ammonium, or an alkyl-, cycloalkyl-, or aralkyl-substituted ammonium group, and R1 and R2 are hydrogen, alkyl, cycloalkyl, hydroxy alkyl, cyanoalkyl, aralkyl or thiocarbamyl groups and n is 2 or 3, may be used as accelerators for rubber as described in Group V. Specified examples are succinamic acid, N-isopropyl-succinamic acid, N-butyl succinamic acid, N-cyclohexylsuccinamic acid, N,N-dicyclohexyl succinamic acid, the ethylamine salt of N-ethylsuccinamic acid, the butylamine salt of N-butylsuccinamic acid, the di-isopropylamine salt of N,N-di-isopropyl succinamic acid, the dicyclohexylamine salt of N,N-dicyclohexylsuccinamic acid, the zinc salt of N-butyl succinamic acid and the zinc salt of N,N-dicyclohexylsuccinamic acid.  In examples: (1) succinamic acid was prepared by acidifying barium succinamate obtained by reacting succinimide with barium hydroxide; (2) the dicyclohexylamine salt of N,N-dicylohexyl succinamic acid was prepared by direct action of dicyclohexylamine or succinic anhydride; (3) the butylamine salt of N-butyl succinamic acid was similarly prepared from butylamine and succinic anhydride.
Patent GB-1094513-A (GB)
Title: Improvements in or relating to printing apparatus
IPC: B41F15/08
Filed: 1966-01-11
Abstract: 1,094,513. Endless conveyers. L. G. DUBUIT Jan. 11, 1966 [Oct. 26, 1965], No. 1192/66. Heading B8A. [Also in Division B6] Open-ended cans 3 are supported by horizontal rods 2 extending laterally at equal intervals from a conveyer chain 1 which transports the cans from an enamelling-machine, through a printing station, and thence along a path allowing the print to dry. The chain is continuously driven by sprockets 4, 5, has a looping device comprising sprockets 30, 32 mounted on a centrally pivoted arm 34, and is intermittently driven by a sprocket 24, whereby each can comes to rest in printing position below a reciprocable printing-screen 27. In printing position, a pneumatically-operated jack 50 is moved so as to cause pointed rollers 44, 45 to engage a can and move its lower end up pointed rollers 39, 40 so as to be engaged by a rotating support 38. A lever 52 disengages dogclutches so as to stop the printing-machine and the intermittent chain feed, as for inking the screen. A sprocket 26 on an arm 28 is adjustable by a screw 29 according to the diameter of the can.
Patent GB-859499-A (GB)
Title: Flexible coupling for shafts
IPC: F16D3/54
Filed: 1958-01-13
Abstract: 859,499. Universal joints. MORSE CHAIN CO. Jan. 13, 1958 [Jan. 31, 1957], No. 1225/58. Class 80 (2). [Also in Group XXV] A universal joint comprises a pair of sprockets 13, at the adjacent ends of hubs 11, surrounded by a chain having links 14 made from a plastic such as nylon, each link engaging two teeth, one on each sprocket, and steel pins 20 connecting the links. As shown, each link 14 has substantially cylindrical tooth-engaging portions 18, 19 but in a modification, Fig. 5 (not shown), the tooth-engaging portions are of barrel shape. Holes 21, 22 receives the steel pins 20. The outside of the assembled chain is smooth, so that no guard or cover is necessary. If required, the assembled chain will retain lubricant around the sprockets &c.
Patent GB-875734-A (GB)
Title: Improvements in cross-linking of polyethylene
IPC: C08K5/08
Filed: 1960-01-13
Abstract: A process for cross-linking polyethylene comprises uniformly blending a normally solid polymer of ethylene with a minor amount of a quinhydrone dimeride and an alkaline carbon black which, when suspended in water forms a suspension having a pH of about 8-10, and heating the resultant mixture to a temperature above that at which the quinhydrone dimeride undergoes disproportionation into free radicals, thereby generating free radicals within the mixture and inducing cross-linking of the polymer chains.  Specified quinhydrone dimerides, which may be formed in situ, are those of p-benzoquinone and 2, 3, 5, 6-tetrachloro-p-benzoquinone with hydroquinone, p-phenylene diamine and p-benzoquinone dioxime.  The compositions may also comprise elastomeric copolymers of butadiene and styrene, butyl rubber, lead oxide and zinc oxide, and the cross-linked products used in the insulation of high-voltage electric power cables.
Patent GB-547602-A (GB)
Title: Improvements in electrodes for sparking plugs
IPC: H01T13/39
Filed: 1941-01-31
Abstract: 547,602. Alloys. GRIFFITHS, W. T. Jan. 31, 1941, No. 1307. [Class 82 (i)] [Also in Groups XXVII and XXII] In order to avoid brittleness in a sparking- plug electrode made from platinum, rhodium. iridium, osmium or an alloy containing one or more of these, the metal or alloy contains less than .01 per cent. in all of the elements of the sulphur and phosphorus groups, lead, tin, and silicon, and preferably less than .005 per cent. of these elements. The alloys may also contain palladium, ruthenium, gold, and silver, and also tungsten, molybdenum, copper and nickel. To eliminate the impurities in question from the commercially pure metals before the alloys are made, rhodium may be converted into a solution of rhodium chloride, precipitated as rhodium potassium nitrite, converted into rhodium potassium chloride, and recovered by reduction with formic acid; platinum may be purified by dissolving in aqua regia and. precipitating as ammonium chloroplatinate. After such rerefining, the alloys may be subjected to spectrographic or equivalent analysis to ensure that they are of the required degree of purity.
Patent GB-101104-A (GB)
Title: An Electro-magnetic Release or Cut-out.
Inventor: FANTINI ALBERTO
IPC: H01H71/42
Filed: 1916-01-31
Abstract: 101,104. Fantini, A. Jan. 31, 1916. Automatic circuit-breakers.-In electro-magnet cut-outs having retarded and instantaneous release for small and excessive overloads, the retarded opening being effected by an induction disk, the disk A is held from rotation during normal working by a detent G having an arm E bearing on a stop D on the disk, the detent being moved to release the disk on small overload by an adjustably weighted armature acted on by an electro-magnet B, through which the current to be controlled passes. The disk is also acted on by the shrouded poles C of the electro-magnet, and when released, the whole of the turning-force of the disk is used to effect the trip through the worm and wheel a<1>, N, clutch m, gearing m<2>, Q, spindle s<1>, cam w, and hook 2. The wheel Q is connected to the spindle by means of a detent S carried by a sleeve oil the spindle; the detent can be placed in any one of a number of slots in the wheel, so that the time-interval before the hook is tripped can be varied. Instantaneous release is obtained through an armature Z acting on the hook through the rod X; the distance of the armature from the electromagnet can be adjusted by the screw Y.
Patent GB-309886-A (GB)
Title: Improvements in or relating to machines for bevelling the margins of shoe soles
IPC: A43D87/00
Filed: 1928-01-17
Abstract: 309,886. British United Shoe Machinery Co., Ltd., and Ricks, F. Jan. 17, 1928. Milling-cutters, machines with. - In a machine for bevelling the margin of the heel-seat of a reinforced insole &c. a shaft 9, driven by a pulley 64 carries a rotary tool 13. In the frame 7 is mounted a stem 19 adjusted by a screw 45 and carrying an arm 43 urged by a spring against an adjusting screw 41. Adjustable on the arm by a screw 59, is a block 25 carrying a freely mounted work support 27 with a raised circular edge gauge 33, Fig. 4, not shown. An arcuate presser plate 47 is mounted on links 51 and is urged by a spring 53 to press the work on to the work-support away from the cutter. A sole to be bevelled is inserted between the members 27, 47 with the edge at the commencement of the bevel against a gauge, and the sole is drawn and turned to the finish of the operation, the cutting point being transferred from the lowest point of the cutter to the most forward point. A fan and hood are fitted to expel dust. To bevel the edges of soles attached to their lasts the arrangement shown in Fig. 5 is used. A freely mounted work support 65 is carried by the member 25 and a disc 73 secured to the hollow cutter 13 is housed in a hollowed portion of the member 65. Surfaces 77, 65 position the last while the sole is bevelled by the cutter.
Patent GB-1273843-A (GB)
Title: A cooling tower
Inventor: HATAKEYAMA FUKI
IPC: F28F25/06
Filed: 1970-01-13
Abstract: 1,273,843. Cooling towers. SHINWA SANGYO CO. Ltd. 13 Jan., 1970, No. 1658/70. Heading F4K. A cooling tower packing 16 comprises bendable, corrugated plates 25 made e.g. of synthetic plastics, metal or paper, and spaced apart by linear elements such as rods 26 lying across the crests of the corrugations whereby by adjusting the distance d between adjacent rods the pitch P of the corrugations and hence the density of the packing may be varied. Preferably the plates are formed as concentric cylinders with the corrugations running vertically and variations in the distance d are effected by tensioning of the rods 26 to deform the corrugations of the plates as shown by comparing Figs. 2A and 2C. Fig. 1 shows one form of the cooling tower in which water is sprayed over the packing 16 by a sprinkler 12 rotated by the reaction of the water issuing from the sprinkler arms 19. The downflowing water e.g. from a vapour condenser, is directed by guide means 17, 17<SP>1</SP> into a collecting trough 15, and cooling air is forced by a motor driven fan 22 upwardly over the packing to an outlet 24.
Patent GB-690025-A (GB)
Title: Improvements relating to seat pillars
IPC: A47C3/20
Filed: 1952-01-21
Abstract: 690,025. Seats. ERIKHORN, K. H., and BREMSHEY, F., [trading as BREMSHEY & CO.] Jan. 21. 1952 [Jan. 22, 1951; June 9, 1951No. 1675/52. Class 52(ii) In a foot pillar for a seat which is adjustable both angularly and vertically a seatcarrying tube, which is guided in the foot pillar casing, is provided with teeth for engagement with a height-adjusting lever and also provided with one or more vertical grooves for an angularly adjusting lever. As shown the seat-carrying guide tube 7 has its lower part pinned to a guide collar 9 which is slidably and rotatably mounted in the bore of the stationary pillar 'casing. This collar 9 has one or more vertical grooves 10 with which the nose 25 of a hand lever 24 can engage so as to lock it after angular adjustment but permit vertical movement. Rotatably mounted in the upper part of the guide tube 7 is a bush 11 but is prevented from rotation relatively to the casing. by a pin and slot arrangement 14, 15. The bush 11 is provided with notches forming teeth 18 with a selected one of which the height-adjusting lever 20 engages. The seat is adjusted by hand. In a modification the guide tube is guided directly in the bore of the casing and is provided with annular teeth for engagement by the height-adjusting lever.
Patent GB-214699-A (GB)
Title: Process for the removal of the brown colouration in china clays
IPC: C01F7/26
Filed: 1923-01-19
Abstract: To remove the brown coloration from china clay, the clay is suspended in a solution of sodium or other alkaline sulphide, and dilute sulphuric acid is then added until the mixture is almost neutral. After five or six hours, a further quantity of sulphuric acid is added to dissolve out the ferrous sulphide formed and precipitate the clay, which is then repeatedly washed with water. A little milk of lime may be added to the last washing to neutralize acidity. p Reference has been directed by the Comptroller to Specifications 4618/77 and 2309/14, [Class 87 (i), Bricks &c.].ALSO:To remove the brown coloration from china clay, the clay is suspended in a solution of sodium or other alkaline sulphide, then p  dilute sulphuric acid is added until the mixture is almost neutral.  After five or six hours, a further quantity of sulphuric acid is added to dissolve out the ferrous sulphide formed and precipitate the clay, which is then repeatedly washed with water. A little milk of lime may be added to the last washing to neutralize acidity.  Reference has been directed by the Comptroller to Specifications 4618/77 and 2309/14.
Patent GB-537348-A (GB)
Title: Improvements relating to electric push switches
IPC: H01H13/14
Filed: 1940-01-27
Abstract: 537,348. Retractive switches. MIDLAND ELECTRIC MANUFACTURING CO., Ltd., and VICARY, A. W. Jan. 27, 1940, No. 1708. [Class 38 (v)] Pressure of the fist or palm of the hand on a knob f, moves it against the action of a spring i to actuate the button c of a pressbutton switch b.
Patent GB-378772-A (GB)
Title: Improvements in winding gear for measuring tapes
IPC: G01B3/10
Filed: 1932-01-20
Abstract: 378,772. Measures of length. BERTRAM, F., 79, Dresdnerstrasse, Vienna. Jan. 20, 1932, No. 1714. [Class 106 (ii).] The handle c for the winding crank of a measuring tape is hinged to a rigid crank arm a. The latter is grooved or provided with a channel in which the handle lies when folded. The handle is retained folded or in the turned up position for use by a spring b and when folded extends beyond the crank arm to be easily grasped for moving about its hinge.
Patent GB-1045837-A (GB)
Title: Improvements in dosimeters
IPC: G01T1/10
Filed: 1964-01-15
Abstract: A dosimeter comprises a silver-activated metaphosphate glass contained in a metal housing which has conical bores in a number of sides such that radiation from any direction can be received by the glass.  The glass and the housing are of rectangular cross-section (Figs. 1,2, not shown).  The housing may be of cadmium or tin and the bores have a preferable convergence angle of 90 degrees.  The glass may be used to detect a -, b -, g - or X-rays.
Patent GB-160045-A (GB)
Title: Process of producing dry water soluble products from karaya gum
IPC: C09D105/14
Filed: 1920-01-20
Abstract: Dry water-soluble products are prepared from Karaya gum by dissolving the gum in water containing a non-oxidizing alkaline substance, e.g. sodium bicarbonate, and drying the resulting solution.  Prior to drying, another alkali-soluble material may be added, e.g. resin, or casein either per se or as milk.  The products are useful inter alia in the manufacture of sizing compositions, or as thickening agents in cloth-finishing.
Patent GB-1101909-A (GB)
Title: Method for producing gallium arsenide devices
Inventor: ANTELL GEORGE RICHARD
IPC: H01L21/225
Filed: 1967-01-13
Abstract: 1,101,909. Making GaAs devices. STANDARD TELEPHONES & CABLES Ltd. 13 Jan., 1967, No. 1852/67. Heading HlK. A gallium arsenide semi-conductor device is made by depositing on the surface of a gallium arsenide body, a silicon layer doped with an acceptor impurity or a donor impurity other than silicon, and heating in an arsenic-free atmosphere to diffuse the impurity into the surface. The layer of silicon acts as a barrier to prevent oxygen diffusion. An epitaxial layer 31 of N-type GaAs is grown on a substrate 32 of N<SP>+</SP> -type GaAs and covered with a silica layer (33, Figs. 3b and 3c, not shown) provided with a window therein. A layer (34) of Zn or Mg doped Si is deposited by sputtering over the oxide film and the window and then heated to give a diffused P-type base region (35). The silica and silicon layers are replaced by another silica layer 36 having a window therein for an emitter region. A pure layer of silicon (37, Figs. 3d and 3e, not shown) is deposited over the silica and the structure heated in an arsenic atmosphere to give a diffused N-type emitter region 38. The silicon in contact with the gallium arsenide recrystallizes and an N<SP>+</SP>-type contact is formed on the emitter region. Alternatively the silicon layer (37) may be doped with As, Sb or P. The silicon layer is partially removed to leave an emitter contact 39. Ohmic contacts 40, 41 and 42 are provided for the device. The silicon layer containing Zn and Mg may be replaced by one containing Be, Cd or Mn, whilst the donor impurity may be Sn. Using similar techniques, a mesa or planar diode may be formed (Figs. la to Id and 2a to 2d, respectively, not shown) which may be suitable for varactor or avalanche oscillators. A plurality of devices may be formed in one slice and subsequently divided. The doped Si layer may be deposited by R.F. electric discharge in a low pressure atmosphere of SiH 4  and Zn or Mg vapour.
Patent GB-1013421-A (GB)
Title: Connector for circuit boards
Inventor: GREASLEY ERIC ARTHUR
IPC: H01R12/50
Filed: 1963-01-16
Abstract: 1,013,421. Two-part couplings. PRESSAC Ltd. Jan. 15, 1964 [Jan. 16, 1963], No. 1919/63. Heading H2E. The contact member of the edge connector for printed circuit boards disclosed in Specification 1,001,221, which has outer fixing prongs 1, Fig. 5, by which it is secured to the connector body and inner prongs 7 for engaging an edge contact of an inserted printed circuit board, is modified to enable the member to be used in a variety of ways. The member may have " snap-in " fingers 9 for engagement in a hole 10 of a baseboard, or a supporting lug or earth bracket 5, Fig. 2, and the inner prongs may be absent, or replaced by a blade 4 which may either co-operate with a notch in the circuit board to ensure correct positioning of the controls or act as an end stop for the circuit board. Fig. 9 shows a double member for joining two connector blocks end on, the members being bent up at right angles to the fixing portion 13, the lugs of which may be replaced by "snapin " fingers (Fig. 10, not shown). Tags for solderless crimped connections may be prog vided.
Patent GB-588093-A (GB)
Title: Improvements in apparatus for testing the physical qualities of materials
IPC: G01N3/16
Filed: 1944-02-02
Abstract: 588,093. Testing physical qualities. KEINATH, G. Feb. 2, 1944, No. 1934. Convention date, April 10, 1943. [Class 37] [Also in Groups XIX and XXXVIII] The reaction of materials under stress is tested by subjecting a specimen piece and a standard piece of the same or different material to the same stress, and measuring the differential value of the respective deformations by means of variable impedances responsive to the deformations arranged in a balanceable electric network of the Wheatstone bridge type. The specimen X to be tested is supported in a frame in line with a standard piece S preferably of larger cross-section, having its upper end screwed into a holder 5 which is attached to a threaded shaft 6 carrying a nut adapted to be turned by worm 10 and Worm-wheel 9 so as to raise or lower the shaft 6 and exert stress accordingly. The amount of stress is indicated by the axial position of a stylus 53 mounted on a screw 55 driven by the motor 40 which drives the worm 10. Gauge points 26, 22 resting firmly on the specimen X are carried respectively by an armature 24 and a core 20 having an inductance coil 23, so that a variation in the length 26-22 causes a corresponding variation in the impedance of coil 23. Corresponding gauge points 36, 32, coil 33 &c. are provided for the standard piece S, and the coils 23, 33 are arranged as shown in Fig. 3, in a network including a relay 71 and a rheostat 81 having its rotating arm 82 on the shaft 83 that drives the recorder drum 51. Whenever the arm 82 reaches a position of " balance " for the branch 70, no current passes through the relay 71 and a contact member 72 drops temporarily and connects contacts 74, thus completing a pilot circuit through stylus 53 and drum 51, and making a mark on the drum chart 57 indicative of the differential deformation then obtaining under the stress indicated by the axial position of the stylus. The recording chart may be marked by other means, for example by controlling electrically the ink supply to a stylus or by a puncturing discharge through suitable paper. Strain-stress hysteresis loops may be recorded on the chart. A record may also be obtained for determining the yield strength. The device may be applied for compression, torsion and vibration tests, and in place of variable inductances, variable voltages, capacitative strain gauges, or magnetostrictive devices may be used.
Patent GB-284694-A (GB)
Title: Improvements in or relating to presses for the treatment of moist materials
IPC: B30B9/12
Filed: 1928-01-20
Abstract: 284,694. Krupp Grusonwerk Akt.- Ges., F. Feb. 5, 1927, [Convention date]. Extrusion presses.-The pressing chambers of a worm press comprises a series of compartments 2 - - 5 of progressively reduced diameters connected by tapering passages 6, 7, 8, the oblique internal surfaces of which have a damming action on the material passing from one compartment to the next. The walls of the tapering passages may be adapted to act as strainers and the thread of the worm may be interrupted at the passages. Specification 182,171, [Class 91, Oils &c.], is referred to.
Patent GB-1302979-A (GB)
IPC: C08F14/06
Filed: 1971-01-14
Abstract: 1302979 Polymerizing vinyl chloride CESKOSLOVENSKA AKADEMIE VED 14 Jan 1971 [21 Jan 1970] 1949/71 Heading C3P Heat stable, fibre-forming vinyl chloride polymers are prepared by polymerizing vinyl chloride at - 20 to + 30‹ C. in the presence of a catalyst comprising a complex of an alkyl lithium with an organometallic compound of a Group IV metal or an alkoxide of a Group I to III metal, optionally together with an electrondonor selected from amines, pyridines, ethers, alcohols, ketones and esters. Preferred lithium compounds are ethyl and butyl lithiums. Preferred complexing agents are dicyclopentadienyl titanium dichloride and organotin and organolead compounds. Examples describe the polymerization of vinyl chloride in the presence of complexes of dicyclopentadienyl titanium dichloride and (1) ethyllithium in benzene, (2) nbutyl lithium in heptane, (3) t-butyl lithium in heptane, (4) and (5) ethyl lithium and tetrahydrofuran in benzene and (6) t-butyl lithium and tetraphenyltin in benzene.