baber/WOPTO huggingface dataset:
Patent GB-144336-A (GB)
Title: Improvements in or relating to the production of water-soluble dyes
IPC: C09B61/00
Filed: 1918-12-13
Abstract: Water-soluble dye preparations are obtained from animal or vegetable dye-yielding matters by extracting the raw material with organic solvents, evaporating the extract to a syrup or paste and fusing the product with a water-soluble metallic salt or solid organic acid. The same parent material may be extracted successively with more than one organic solvent, or first with organic solvent and then with water, to obtain different extracts for treatment.  According to examples, there are obtained:-a bluish-red dye for wool or silk by fusing an alcohol extract of cudbear with alum; a scarlet wool dye by fusing a pyridine extract of cochineal with cream of tartar; a reddish-mauve wool dye by fusing the same extract with alum; a blue wool dye by fusing an alcohol extract of turmeric with potassium ferricyanide; a navy-blue dye for wool or silk by fusing an alcohol extract of logwood with copper sulphate; a yellow or yellowish-red wool dye by fusing an alcohol extract of madder with alum; purple silk dyes by fusing an acetone or pyridine extract of madder with alum. Other specified materials are:-as raw materials, Brazil wood or sanderswood; as solvent, amyl acetate; as fusion reagents, aluminium or ferric acetate, stannous chloride, potassium bichromate, or tartaric, citric, or oxalic acid.
Patent GB-1436763-A (GB)
Title: Lubricating oil compositions and copolymers for use therein
IPC: C10N30/02
Filed: 1973-05-02
Abstract: 1436763 Two-block copolymers SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 2 May 1973 [4 May 1972] 20817/73 Heading C3P [Also in Division C5] A copolymer having the formula A-B wherein A is a hydrogenated polymer block of a conjugated diene and B is a polymer block of a monoalkanyl pyridine, a(meth)acrylate, a methacrylonitrile, or an alphaolefin oxide or a hydrogenation product of such a block, is obtainable by the usual two-stage sequential polymerization using one alkyl lithium initiator, followed by hydrogenation. Desirably the diene block if derived from butadiene, has a substantial 1,2-content prior to hydrogenation. In examples, butadiene-2-vinyl-pyridine, -methacylonitrile, -ethylene oxide and isoprene-2- vinyl pyridene block copolymers are prepared using alkyl lithium initiators in hydrocarbon or hydrocarbon ether solvents, with addition of KO-t-Bu in the ethylene oxide step. The polymers are hydrogenated using nickel dioctoate or nickel acetylacetonate together with aluminium triethyl or trisobutyl, the polymers containing vinyl pyridine units being first treated with boron-trifluoride to prevent catalyst inactivation. The copolymers are useful as lube oil additives.
Patent GB-235428-A (GB)
Title: Process for the manufacture of water gas
IPC: C10J1/213
Filed: 1924-09-03
Abstract: 235,428. Holden, T. F. Sept. 3, 1924. Drawings to Specification. Producers.-In the generation of carburetted water gas, the gas from a series of up and down runs is passed through an economizing chamber formed in the side of a carburettor to a primary mixing chamber where the gas is divided into one or more streams by a wall which preheats the carburetting liquid. The apparatus used is described in Specification 235,427, [Class 55 (ii), Gas manufacture &c.].
Patent GB-867380-A (GB)
Title: Improvements in and relating to twin windscreen wipers for motor vehicles
IPC: B60S1/18
Filed: 1958-06-30
Abstract: 867,380. Windscreen wipers. BOSCH G.m.b.H., ROBERT. June 30, 1958 [Feb. 10, 1958], No. 20874/58. Class 138(1). A twin windscreen wiper is driven by a cable 9 from a continuously rotating crank 10, the cable passing round pulleys 1 and 2 mounted on the wiper shafts so as to cross itself once near each pulley, the arrangement being such that the wipers are simultaneously moved in the same direction.
Patent GB-373842-A (GB)
Title: Improvements in valves for controlling the flow of liquid or gas out of or into receptacles
IPC: B67D3/04
Filed: 1931-07-22
Abstract: 373,842. Multiple-way plug cocks. SCOTT, W. and SCOTT, J. W., Oaklands, Church Lane, Handsworth Wood, Birming- ham. July 22, 1931, No. 20899. [Class 135.] A multiple-way plug cock for controlling the flow of beer &c. from or into casks &c. and venting the same, comprises a rotary plug 15 having an L-shaped discharge port 14 drawing liquid through a slit strainer 10, 11 to a swivelling discharge tube or spout 28, the whole of the tap including the casing 1, handle 22, and spout 28 being adapted to lie within the space protected by the chine of the cask. The plug is also provided with a two-diameter vent passage 17, 19 adapted to register, in the fullyopen position of the cock, with the atmospheric vent hole 12 and the vent pipe 9 leading into the cask &c. In the initial act of opening the cock, but short of the position for liquid flow, excess gas pressure within the cask &c, can, if necessary, be vented to atmosphere through an angle side branch 33 of the vent passage 17, 19, and through the ducts 20, 21, and hollow handle 22 when the piston 26 and plunger 25 have been removed by unscrewing the plug 24. Alternatively, gas under pressure can be forced into the cask &c. by the same route. Or again, the piston 26 can be used as a pump to dislodge liquid or solid matter from the inner end of the vent pipe 9. The plug passages 14 and 17, 19 are so disposed that after the first initial opening position referred to above a restricted flow can be obtained without venting at the vent hole 12. In the closed position of the cock the discharge port 14 vents the spout 28 to atmosphere through a vent port 13 in the cock casing. The plug 15 may be formed with a ribbed metal core on to which vulcanite or other similar hard material is moulded, and the valve seating may be coated with vulcanite. The cock is mounted on a back-plate 3 with soft packing 5. Specification 221,096, [Class 135, Valves &c.], is referred to.
Patent GB-394823-A (GB)
Title: Improvements in or relating to the manufacture of needles for gramophones or the like sound-reproducing or sound-recording apparatus
IPC: G11B3/48
Filed: 1932-07-25
Abstract: 394,823. Gramophone needles. JORDAN, J. F., Trelawney, Clapham, near Worthing, Sussex. July 25, 1932, No. 20968. [Class 40 (ii).] Needles for gramophones and the like are made of burnt clay, preferably by drying to a plastic condition a colloidal suspension obtained by washing out the coarser ingredients, drying further, and heating to a sintering temperature for about ten to twelve hours. An analysis of a kind of clay suitable for the purpose is given. The needles may be of various shapes, two examples being shown. A metal or rubber band 11 may be provided near the end that is to be gripped by the clamping screw, to prevent fracture.
Patent GB-440499-A (GB)
Title: Improved apparatus suitable for transporting electric cables
IPC: B65H49/32
Filed: 1934-07-19
Abstract: 440,499. Cable drums. OKONITECALLENDER CABLE CO., Inc., 730, 21st Avenue, Paterson, New Jersey, U.S.A. July 19, 1934, No. 21119. Convention date, July 19, 1933. [Class 99 (ii)] [See also Group XXXVI] An unsheathed impregnated cable 26, Fig. 1, is transported on a drum 1 filled with insulating liquid 27 and having a removable cover member 24 which is secured to the rims of the end members 23 of the drum in a fluid-tight manner. The drum is mounted on an axle 29 provided with wheels 30 of larger diameter than the drum. The right hand wheel is rigidly fixed to the axle, but the left hand one is loose on the axle so that the wheels and shaft may be readily detached from the drum when desired. As shown in Fig. 3 the end members 31 of the drum have flanged rims 32 and the cover member 33 comprises two semi-cylindrical plates which are secured together by bolts 35. A fluid-tight joint between the cover 33 and the rims 32 is obtained by compressing packing 40 between the edges of the cover member and packing rings 36 which embrace the rims 32 and which are drawn together by bolts 41. According to the Specification as open to inspection under Sect. 91, the cable may be coiled on an open drum 8, Fig. 1 (Cancelled), which is rotatably mounted in an oil-filled closed cylindrical drum 4. Means may be provided exteriorly of the drum 4 for rotating the drum 8. This subject-matter does not appear in Specification as accepted.
Patent GB-658323-A (GB)
Title: Improvements in or relating to devices for indicating the wear of drilling bits
IPC: G01S7/06
Filed: 1949-08-15
Abstract: 658.323. Drill bits. STANDARD OIL DEVELOPMENT CO. Aug. 15, 1949, No. 21157. Convention date, Dec. 22, 1948. [Class 85] A drill bit in which means are provided to in dicate when the cutting blades have been worn to a certain extent by the means causing a sudden drop of pressure in the drilling fluid. The means comprise one or more ducts 22 additional to those normally passing through the body 10 of the bit for the passage of the drilling fluid. Each duct 22 is normally closed by a plug 24 which is maintained therein against the outward pressure of the drilling fluid by a rod 30 one end of which passes through a passage 29 in a stud 28 on the body 10 whilst the other end is tack welded to the back of the blade 11 at the point to which it is permissible for the blade to be worn. When the blade and the weld have been worn away the rod drops and the plug is forced out of the duct so that the resultant drop in the pressure of the drill mud, which can be observed, indicates the need for replacing the bit.
Patent GB-463104-A (GB)
Title: Improvements in sewing machines
IPC: D05B27/18
Filed: 1936-07-31
Abstract: 463,104. Sewing-machines. UNION SPECIAL MACHINE CO. July 31, 1936, No. 21181. Convention date, May 21. [Class 112] In a cup-feed type of machine for uniting a number of fabrics by an overedge seam, as described in Specification 397,332, and comprising feed cups 3, 4, a horizontally - reciprocating needle 25, an oscillating and reciprocating looper 31, and an oscillating loop spreader 45, the spreader is converted into a supplemental looper for a third thread 67 to form a thin-thread seam by providing it with guide eyes 63, 64, while its function of spreading the looper thread 57 is effected by a hook 68. The needle bar 26 is reciprocated in an oil-tight bushing 27 by a crank 30 on the drive shaft 23, the looper bar 33 is reciprocated and oscillated in oiltight bushings 34, 35 by mechanism 40-44 and 37-39 respectively, and the supplemental looper bar 46 is oscillated in an oil-tight bushing 47 by eccentric rod 49 and crank arm 48. The stitch tongue 50 is supported above the needle by an arm 51 on an adjustable bracket 52. The needle thread 53 passes from the tension device under a guide finger and through a guide eye 56 on the needle bar. The looper thread 57 passes from a tension device through a fixed eye 59, spring take-up 60, fixed eye 61, and guide-eye 62 on the end of the looper bar. The third thread 67 passes from a tension device through a fixed eye 70, over a guide finger 71, and through the eye 62. The shaft 5 of the feed-cup 3 is in two parts 5a, 5b, the part 5b being journalled in a bracket 9 fulcrumed at 10 so that the cup 3 can be swung away from the cup 4. The shafts 5, 6 are connected by gear wheels 12, 13, and the shaft 6 is intermittently rotated through a rotary clutch 15, by a rod 16 adjustably pivoted at 17 to an arm 18 on a shaft 19 rocked by an eccentric rod 21 and arm 20.
Patent GB-1160645-A (GB)
Title: Process for the Production of Synthetic Resins
Inventor: WAAG THEODOR
IPC: C08J9/14
Filed: 1967-05-08
Abstract: 1,160,645. Foamed synthetic resins. FARBENFABRIK WOLFEN VEB. 8 May, 1967, No. 21219/67. Addition to 1,064,343. Headings C3C and C3R. A process of making foamed synthetic resins based on mono-, di- or trimethylol ketones or mixtures thereof comprises condensing and foaming the monomeric ketones or pre-condensates derived therefrom by mild heat treatment, in the presence of a finely-divided metal powder or flake, an alkali metal hydroxide with which the metal reacts to evolve a gas, and at least one compound which boils below 60‹ C. which is practically insoluble in the resin, the foaming being carried out without the external application of heat. A methylol-acetone compound is preferred, such as dimethylol acetone, which is used in the examples. The low-boiling compound is preferably a fluorinated hydrocarbon, e.g. Cl 3 CF or Cl 2 CHF, and the metal powder may be aluminium or aluminium bronze.
Patent GB-1426904-A (GB)
Title: Method and apparatus for the production of foamed material
IPC: B29C44/28
Filed: 1973-05-04
Abstract: 1426904 Moulding continuous foam webs VITA INTERNATIONAL Ltd 29 April 1974 [4 May 1973] 21229/73 Heading B5A Apparatus for continuous production of a polyether foam block comprises a stationary moulding unit defined by walls 11 and a base 10, and a channel conveyer 12 movable longitudinally through the moulding unit, the foamable mix being dispensed into and carried along by the conveyer 12; to ensure a flat top on the block, rotatable rollers 14 each having a helical thread 15 thereon are disposed at the sides of the moulding unit with part of the thread protruding through slots 18 into the mould cavity (as in Fig. 3) so that rotation of the rollers produces ripples in the flexible material of the channel 12, the alternate crests and valleys of the ripples moving in an upward direction to elevate the side regions of the foaming mass. A series of such rollers may be provided, and each roller may be movable into an inoperative position to enable mixtures of different foaming rates to be moulded. The conveyer 12 is formed from a folded strip of craft paper, or a polyethylene foil. In an alternative embodiment the ripples are caused by two conveyer belts one on each side of the moulding unit, each conveyer belt bearing spaced apart slots angularly disposed with respect to the edges of the belt, the belt being carried by a pair of rollers whose axes of rotation are parallel to the base of the moulding element. As the rollers rotate and the belts move, the slats press against the conveyer 12 to create ripples therein.
Patent GB-807204-A (GB)
Title: Improvements in or relating to process for polymerizing olefines
IPC: C08F2/00
Filed: 1956-07-10
Abstract: Hydrogen is added to the polymerization system wherein at least one ethylenically unsaturated hydrocarbon is contacted with a catalyst formed by mixing a compound of a metal from the group consisting of Groups IVa, Va, VIa and VIII of the Mendeleeff Periodic Table or manganese, with an organometallic compound of an alkali metal, alkaline earth metal, zinc, earth metals or the rare earth metals. Specified monomers are ethylene, propylene, butene-1, hexene-1, heptene-1, octene-1, octadecene-1, dodecene-1, isobutylene, cis-butene, diisobutylene, tert.-butylethylene, 4- and 5-methylheptenes-1, tetramethylethylene, styrene, alphamethylstyrene, vinylcyclohexane, hexadiene - 1 - 4,6 - methylheptadiene - 1,5, butadiene, isoprene, pentadiene-1,3, cyclopentadiene, cyclohexene, 4-vinylcyclohexene-1, beta-pinene and mixtures thereof.  Specified catalyst components are titanium and zirconium tetrachlorides, manganous, nickelous, ferrous and ferric chlorides, tetrabutyl titanate, zirconium acetylacetonate, vanadium oxyacetylacetonate, chromium acetylacetonate, butyl lithium, amyl sodium, phenyl sodium, dimethylmagnesium, diethylmagnesium, diethyl zinc, butylmagnesium chloride, phenyl magnesium bromide, triethyl - tripropyl - triisobutyl trioctyl - tridodecyl-, aluminium and others.  The polymerization may take place with or without an inert organic diluent. Specifications 789,781 and 795,182 are referred to.
Patent GB-746175-A (GB)
Title: Improvements in or relating to line time base circuits particularly for television receivers
Inventor: JONES EMLYN
IPC: H03K4/28
Filed: 1952-08-26
Abstract: 746,175. Saw-tooth generating circuits. MULLARD RADIO VALVE CO., Ltd. July 31, 1953 [Aug. 26, 1952], No. 21436/52. Class 40 (6). In a saw-tooth current generator of the type in which an efficiency diode and an H.T. boost capacitor are connected across its inductive output circuit a negative bias is applied to the control grid of the output valve which is reduced when the diode conducts by means dependent on the current therethrough. This prevents excessive screen grid current flowing during the period before the diode has warmed up sufficiently to provide the H.T. potential for the output valve anode. In the circuit shown, the negative bias is offset by a voltage fed to the grid from a resistor 8 and obtained from the boost capacitor 4 when it has charged. In a television receiver the negative bias may be obtained by rectifying a voltage appearing in the valve heater chain or derived from the frame time-base (Figs. 2 and 3, not shown). Alternatively, the negative voltage from a blocking oscillator driving the saw-tooth generator may be used. Specification 746,176 is referred to.
Patent GB-691071-A (GB)
Title: Improvements in and relating to apparatus for producing a unidirectional current dependent upon an alternating current
IPC: H02J13/00
Filed: 1950-08-30
Abstract: 691,071. Electric selective signalling. GENERAL ELECTRIC CO., Ltd., and WELLS, G. M. Aug. 8, 1951 [Aug. 30, 1950], No. 21454/50. Class 40 (i) [Also in Group XL(c)] A circuit arrangement for supplying a unidirectional current dependent upon an alternating current comprises a crystal triode and means for supplying the emitter of the crystal triode with a unidirectional signal produced by rectifying the A.C. The arrangement is applicable to ripple control apparatus, wherein a high frequency signal (e.g. 500 c.p.s.) is superimposed on the feeders of an electric supply system for control purposes. In the Figure a circuit comprising condensers 4, 5 and inductance 6 and resonant to the ripple control frequency is connected across wires 1 and 2 of an alternating current supply. The signal developed across a portion of inductance 6 is applied through rectifier 12, between the emitter and base electrodes of crystal triode 8. The collector current flows through an electro-magnetic relay 23 and is supplied from a full wave rectifier arrangement 19, 20 which is connected across the main supply. Under no signal conditions, relay 23 is not operated, but the presence of the ripple frequency results in the emitter potential being raised so that the collector current is sufficient to operate relay 23, which is used for control purposes.
Patent GB-1465877-A (GB)
Title: Safety indicator system and method for metal forming machines
IPC: F16P3/20
Filed: 1975-05-20
Abstract: 1465877 Machinery safety devices VERSON ALLSTEEL PRESS CO 20 May 1975 [1 July 1974] 21505/75 Heading F2J [Also in Division B3] A safety indicator suitable for a press brake 10 includes indicator lights 18 and 28 on control panels 16 and 22 which are operated by different people, the lights being on when the brake is energized and being in a flashing condition when one or more "run" buttons 16 or 25 is actuated. The lights remain in a flashing condition until all the "run" buttons are actuated within a given time delay (of, say, 5 seconds). The lights then remain on continuously to indicate that the machine is operating. The lights are switched off if all the buttons have not been operated during the time delay, and the indicating sequence can be repeated. The lights and a times unit may be of solid state construction, and audible units may supplement the visual indicators.
Patent GB-919546-A (GB)
Title: Twisted tooth lock washers
Inventor: BOYD THOMAS RONALD
IPC: F16B39/24
Filed: 1959-06-23
Abstract: 919,546. Lock-washers &c. ILLINOIS TOOL WORKS Inc. June 23, 1959, No. 21507/59. Class 89 (1). A lock-washer comprises a body 16 of substantially semi-circular cross-section opening axially in one direction, and formed with radial teeth 22 twisted to extend axially beyond the body in both directions. The body contains a resilient ring 18 of rubber-like material which may be bonded thereto. The washer is held captive on a screw 14 by rolling the threads after assembling the washer in the shank. In another arrangement, the ring has an inwardly projecting annulus to hold the washer on the shank.
Patent GB-516331-A (GB)
Title: Improvements in or relating to automatic temperature-controlled electrically-heated appliances
IPC: D06F75/26
Filed: 1938-07-21
Abstract: 516,331. Thermal switches. GREEN (GEEGEE), Ltd., G., and GREEN, G. E. July 21, 1938, No. 21636. [Class 38 (v)] [Also in Group XIII] A switch 22, of the kind described in Specification 419,917, is actuated by contact of an inclined surface 30 with a press button 24, due to the difference in thermal expansion of an aluminium sole plate 10 and an iron pressure plate 12 enclosing the heating element 11 of an electric iron. The surface 30 forms part of a slider 26 which is adjustable by member 29 to set the .temperature at which the switch is actuated to cut off the current supply to the iron. Specification 495,776, also is referred to.
Patent GB-216580-A (GB)
Abstract: 216,580. Marks, E. C. R., (American Smelting & Refining Co.). Feb. 28, 1923. Dry processes of extracting tin; alloys; agglomerating processes.-Tin-bearing material containing iron and other metals and not more than 0.5 per cent of sulphur is smelted in a blast furnace to reduce a portion of the tin and to produce a slag containing iron and tin, and this slag, while still molten, is subjected to a further smelting to reduce a further portion of the tin and to produce an iron-tin alloy. Excess of sulphur in the ore is removed by roasting, the roasted ore is mixed with a binder such as a slag or silica, and with a flux such as limestone, fine coal is added, and the mixture is sintered. The sintered product is mixed with iron-tin alloy from a previous operation of the process, and with carbonaceous material, and with or without silicious fluxes, limestone, and slag, and the mixture is subjected to the primary smelting operation with production of a slag. This, while still molten, is mixed with fine coal and a flux such as limestone and subjected to the second smelting operation to produce the iron-tin alloy.
Patent GB-1510506-A (GB)
Title: Production of plastics drain pipe
IPC: B29C49/00
Filed: 1975-05-20
Abstract: 1510506 Perforating corrugated pipes F KIRCHNER and H KIRCHNER [trading as FRANKISCHE ISOLIERROHR - UND METALLWAREN - WERKE GEB KIRCHNER] 20 May 1975 [21 May 1974] 21675/75 Heading B5A A plastics drainage pipe, which has transverse corrugations provided with water entry holes around its periphery in the exterior valleys of the corrugations is made by extruding a plastics tube into a moving mould cavity defined by the co-operation, along part of their path of travel, of two or more chains of moulds parts 3, 3<SP>1</SP>, Fig. 2, which move along endless paths, the tube being urged by internal air pressure against the cavity comprising a ribbed surface defining the corrugations, and having projections 10 defining bosses in the pipe, which are then cut off to form the drain holes by cutting means located within the pipe and rotating about an axis co-axial with the pipe. The cutting means may be located downstream of, or within the mould cavity as in Fig. 2, where it comprises a ring knife 7 rotated by means (not shown) and having axially directed cutting edges 25, carried by a die extrusion which is perforated along its length, for admission of the pipe internal air pressure which is maintained by the knife 20, as well as by a guide 6. The knife 7 comprises 4 circumferentially spaced blades which are radially expansibly adjustable into their cutting position upon displacement of the knife 7 over a core 17, and against Belville springs 27, by an adjusting nut 23. Cutting of the bosses, e.g. downstream of the mould cavity, may alternatively be effected, Fig. 4, by the cutting edges 42 of blades 41, 411 which are carried for rotation by a shaft 39 rotated by a compressed air driven turbine 31, the blades being slidably or pivotally mounted for centrifugal outward displacement into their cutting positions, against spring means. The cutting means may also comprise knife assemblies having cutting edges at an angle to the radial direction, and radially adjustably mounted on a wheel.