baber/WOPTO huggingface dataset:
Patent GB-649021-A (GB)
Title: Production of stainless steel
IPC: C21C7/00
Filed: 1944-12-29
Abstract: A method of producing stainless steel of low sulphur content, i.e. less than 0.03 per cent, comprises forming a bath of stainless steel of low carbon content containing 10 to 35 per cent chromium and an excess of sulphur prepared by melting ordinary steel scrap with one or more of the chromium-containing materials, stainless steel scrap having a high sulphur content, high carbon ferrochrome, and chrome ore in which sulphur is present in objectionable quantity, and iron oxide, reducing the overlying slag to recover any chromium which it contains, withdrawing the slag and then preparing on the bath as a finishing step a non-carbonaceous sulphur-reactive slag consisting of burnt lime and a fluxing agent in sufficient amount to give a fluid slag and eliminate sulphur present in said bath.  In a preferred method burnt lime is used in amounts of from 55 to 75 pounds per ton of metal in said bath, and the fluxing agent comprises at least one of the substances fluorspar, ilmenite, rutile or titanite.  The desulphurization may be accelerated by rabbling the metal bath and/or the slag.  It is preferred to maintain the slag at a high temperature whilst preserving its iron oxide content until the carbon content of the bath is decreased to the desired value. U.S.A. Specification 1,954,400 is referred to.
Patent GB-468052-A (GB)
Title: Apparatus for treating gases intimately with liquids
IPC: B01F3/04
Filed: 1935-09-20
Abstract: 468,052. Treating gases with liquids. I. G. FARBENINDUSTRIE AKT. - GES. Sept. 20, 1935, No. 26146. Void. Convention date, Sept. 22, 1934. [Class 55 (ii)] In treating gases with liquids sprayed by vertical discs f rotating partially immersed in liquid and mounted on a shaft b supported at each end by metal plates i covering circular holes in the end walls c of the apparatus, the holes are large enough for withdrawal of the shaft and discs therethrough. Specification 468,051 is referred to.
Patent GB-336731-A (GB)
Title: A method of treating asbestos and other composition sheets or material
IPC: H01B3/06
Filed: 1929-08-29
Abstract: 336,731. Neville, R. C. Aug. 29, 1929. Waterproofing; impregnating compositions for electric insulation.-Sheets, panels, mouldings, or articles, made of asbestos, asbestos cement, cement, clay, china clay, &c. are impregnated with coal tar, tar oil, pitch &c. dried and immersed in a solution of formaldehyde and carbolic acid. The articles may first be dried in a heated chamber. As described, the articles are dipped, either after cooling or whilst still hot, in the tar &c. at 80‹ C. at atmospheric or at increased pressure. Immersion lasts 3 to 5 hours for material “ inch thick. The articles are then drained and allowed to cool, and dried in an air chamber at about 250‹ C. for about 4 hours. The articles are then immersed in a solution consisting of equal quantities of 40 per cent formaldehyde and carbolic acid, either cold or heated to 70‹ C. Finally the articles are heated in an air chamber to 230‹ C. for 3 to 12 hours. The articles produced are hard and impervious with high electrical and heat insulating properties, and are specially suitable for switchboards &c. According to the Provisional Specification, the impregnation with tar &c. is effected at 100-150‹ C. for 12 hours or more, the subsequent drying at 200‹ C., and the final baking at 135‹ C.
Patent GB-532845-A (GB)
Title: Improvements in or relating to snap-action thermostats
IPC: H01H37/54
Filed: 1939-09-21
Abstract: 532,845. Thermal switches. SHEPHERD, G. R. (Westinghouse Electric International Co.). Sept. 21, 1939, No. 26356. [Class 38 (v)] [Also in Group XIII] A bi-metallic member 14 is adjusted by an arm 18, pivoted to the casing, through an intermediate resilient member 16, bearing on a central strip 50 of the bi-metallic member through notches 58 and held in adjusted position by an extension 82 of the adjusting arm 18. One set of contacts 30 is connected to the casing. The other contacts 92 are borne on an assembly 22 mounted on the free end of the bi-metallic member 14, comprising a U-shaped bracket 24 associated with a heater 28. The member 14 is secured to the casing at the end 54 (Fig. 3) and has slots 48 or is built up from separate elements to form a similar structure to effect a snap action.
Patent GB-1392071-A (GB)
Title: Means and a method for reducing the risk of explosion during the cleaning of containers for explosive substances
IPC: B08B9/093
Filed: 1972-06-06
Abstract: 1392071 Preventing explosions in containers SALEN & WICANDER AB 6 June 1972 [4 Feb 1972] 26365/72 Heading ASA The risk of explosion during the cleaning of the cargo container of a ship or other container used for storing inflammable or explosive substances, the risk of explosion being due to the generation of static electricity on finely distributed liquid drops in the form of a liquid mist which are produced in the container when it is sprayed with cleaning fluid, is reduced by creating a temperature difference between the liquid mist and an additional substance in the container or cooled means disposed in the container whereby condensation nuclei having a lower temperature than the liquid mist are generated for the electrically charged liquid drops contained in the liquid mist. Carbon dioxide snow or water drops of a lower temperature than the liquid mist may be sprinkled into the container. The water drops may contain oil-dissolving chemicals or chemicals preventing the creation of selfigniting oxidation products in oil in the container. A cooling coil or other metal surface disposed in the container may be cooled to a lower temperature than the container atmosphere. The process may be carried out using apparatus having means for creating a temperature difference betwen the liquid mist and the additional substance or means adapted to be cooled in the container so that condensation nuclei having a lower temperature than the liquid mist are generated for the electrically charged liquid drops contained in the liquid mist. The aparatus may comprise means for sprinkling into the container water drops of a lower temperature than the liquid mist e.g. large water drops with low initial velocity, and may also comprise a spray-cleaning means for spraying heated sea water with or without chemicals used for the cleaning operation added thereto and a further sprinkler means for the generation of water containing condensation nuclei in the container and a means for supplying sea water of ambient temperature to the sprinkler means so as to create the temperature difference; means for sprinkling carbon dioxide snow; or a cooling coil or other metal surface in the container adapted to be cooled to a lower temperature than the container atmosphere. Means may be provided for indicating the state of the liquid mist so as to determine the moment of time when the risk of explosion is avoided.
Patent GB-658394-A (GB)
Title: Improvements in vehicle bumpers
IPC: B60R19/44
Filed: 1949-10-14
Abstract: 658,394. Vehicle collisionguards. KINSEY, G. Oct. 14, 1949, No. 26464. Convention date, Oct. 27, 1948. [Class 103(ii)] A vehicle bumper bar construction of the type employing upright resilient shock cushioning guards is characterized in that a resilient cushioning strip is interposed between said resilient guards and the bumper bar and is compressed by said resilient guards under impact to provide, through the deformation of contacting resilient surfaces, a shock absorbing cushioning effect therebetween. The bumper comprises two angle section members 1 secured together by vertical bolts 8 and each formed with a groove 4 to accommodate therebetween the tee-head extension 6 of a domed rubber section 5 fitted to the front face of the bumper. Rubber over-riding guards 10 are each attached to the forward face of the bumper by means of a frame 9 which comprises a channel section member having a rear wall 12 and side walls 11 each formed with a flange 13. The rear wall 12 is divided into two parts by a central cut-away portion and each side wall 11 is recessed at 14 and 15 to accommodate the vertical flanges of the bumper members 1 and the rounded head 7 of the rubber member 5 respectively. Hinge plates 17 are hinged to the walls 12 adjacent the cutaway portion to clamp the flanges of the bumper 1 within the recesses 14 and 15 and each plate is formed with an apertured lug 18 so that the plates may be secured together by bolts 19, which also pass through the rearwardly extending flanges of the members 1. The side faces of each rubber guard 10 are grooved to receive the flanges 13 and each guard is fitted with two tubes internally threaded to receive securing studs inserted through the side walls 11.
Patent GB-882242-A (GB)
Title: Improvements in or relating to baling machines
IPC: A01F15/10
Filed: 1956-08-30
Abstract: 882,242. Baling-machines. POWELL, W. N., POWELL, A. F., and ANDERTON, H. Nov. 29, 1957 [Aug. 30, 1956], No. 26492/56. Class 94(1). In a "pick-up" baling machine, the baling ram is reciprocated along an axis disposed substantially at right angles to the direction of movement of the machine i.e. parallel to the axis of the ground wheels. The machine shown comprises a "pick-up" 110, Figs. 1 and 2, a baling chamber 111 whose axis is parallel to that of the ground wheels 115, 116, a baling chamber extension 112 and a ram 114 reciprocable by a crank 141 in the chamber 111, the picked-up crop being fed in to the chamber 111 by an auger 120 and a forking device 121 to which a compound oscillatory motion is imparted by a crank 122. When the machine is being towed for operation, the swingable tow-bar 118 may be locked in the position shown in Fig. 5, so that the path of the tractor 117 is clear of the path of the "pick-up", but when the machine is being moved along a road, the tow-bar may be locked in the position 118<SP>1</SP>, Fig. 6, so that the path of the tractor is within the wheel base of the machine. The overall width of the machine may be reduced by swinging the pivoted sides 132, 133 of the extension 112 to the positions 132<SP>1</SP> and 133<SP>1</SP> shown in Fig. 6. Alternatively, the extension 112 may be swingable as a whole about a pivot bracket 131 for this purpose. The ram 114 is fitted with a cutter blade 151, which co-operates with a fixed blade 152 to shear off excess material fed to the baling chamber, and is provided with wheels running on guide rails of circular or polygonal, e.g. hexagonal cross-section. The twine knotters 129 are disposed on top of the chamber 111, and the tying needles 145 pass upwardly through the chamber and slots 147 formed in the ram 114. Operation of the knotters is initiated by a star wheel 130. The shafts operating the various parts of the machine are driven through gearing by a universally-jointed shaft 155 coupled to the tractor power take-off. Specification 882,243 is referred to.
Patent GB-1004916-A (GB)
Title: Fishing net
Inventor: LITZOW HEINZ
IPC: A01K74/00
Filed: 1964-06-26
Abstract: 1,004,916. Submarine fishing vessel. VOLKSWERFT STRALSUND VEB. June 26, 1964, No. 26552/64. Heading B7A. [Also in Division A1] A submarine fishing vessel supports a net 2 by means of spars 3 movable by hydraulically operated struts 4. The vessel has a propeller 8, guide mechanism 9 and hydroplane 11 and may be manned or automatically controlled. The spars 3 have buoyancy tanks 6.
Patent GB-1301960-A (GB)
IPC: B23Q16/00
Filed: 1971-04-19
Abstract: 1301960 Gauging; machine tool details BAYER INDUSTRIES Inc 19 April 1971 [9 April 1970] 26571/71 Heading B3B In a machine tool there is provided a position locating means 37 for a work holding table 31. The table 31 moves longitudinally on a table carriage which is movable substantially at right angles to the movement of the table 31 to position a workpiece relative to a tool spindle axis 56. A position locating means 37 is provided for both movements. Gauging.-To accurately position the table 31 there is provided an engaging member 28 (Fig. 15) carried by the table 31; a stop means 30 supported on a relatively stationary port, e.g. a frame of the table carriage 33; a position locating carriage 32 movably mounted between said member 28 and stop means 30; first and second precision dimensioned members in the form of pins 34 and 36 supported on said carriage 32 to be accumulatively engaged between said member 28 and stop means 30; and a receiver 60 in said carriage 32 having a plurality of first and second openings 42, 44 (Fig. 14) adopted to receive said pins 34, 36, said pins being provided in sets having diameters varied in precise steps. The pins 34, 36 are automatically inserted into pre-determined holes 42, 44 to provide a required end stop position for the table 31. The holes 44 are inclined to the holes 42 to sub-divide into smaller increments the distance between a hole 44a and a hole 44b. The pins 34, 36 are automatically inserted into the receiver 60 by a device comprising a pin-holding plate 106 (Figs. 2 and 4) having a plurality of station areas provided with openings 220, 222, corresponding to the openings 42, 44, and adapted to carry some of said pins 34, 36, the plate 106 being vertically movably located above the receiver 60 and also being indexably rotatable to carry selected pins 34, 36 into position over said openings 42, 44 and to lower them therein. Indexing.-The plate 106 together with other plates 104, 102 are raised by a fluid pressure cylinder 110 and rotated by motor driven belt (170) (Fig. 7, not shown) engaging a pulley 145 (Fig. 4). At a required station a pin 180 engages a spring biased lever mounted detent (178)(Fig. 5, not shown) which is released by a solenoid device (214). Automatic tool change.-(Figs. 17-19, not shown). A rotary tool turret 35 is mounted adjacent tool spindle axis 56. The turret moves relative to a stationary bank of micro-switches, selected ones of which are operated by pins (368) which are inserted in required holes 366. Machine tool details.-An end stop to which the stop means 30 is attached may include fluid pressure damping means (Fig. 8, not shown) mounted in a block 326 at the end of the frame of the table carriage and movable along a track 321 as the said carriage moves. The table 31 and table carriage (33) (Figs. 20, 21, not shown) are moved by pressure cylinders 54, 55 and (290), (294) (Fig. 27, not shown) respectively.
Patent GB-1329483-A (GB)
Title: Preparation of hydroquinone
IPC: C25B3/23
Filed: 1971-04-19
Abstract: 1329483 Hydroquinone UNION CARBIDE CORP 19 April 1971 [9 April 1970] 26592/71 Heading C2C The invention comprises a method of preparing hydroquinone from phenol by (a) electrolysing an aqueous solution containing 0À5-4% by weight phenol and 1-5% sulphuric acid at 25-100 C., a pH of less than 4, an anode D.C. potential of at least +0À9 volts with reference to a saturated calomel electrode, a cathode D.C. potential more negative than +0À4 volts with reference to a saturated calomel electrode, and a current density of at least 4 amperes per square decimetre until up to 50% by weight phenol has been electrolysed to hydroquinone and (b) treating the electrolysed solution with sufficient reducing agent to convert p-benzoquinone to hydroquinone, (c) removing tars and colour bodies, (d) vacuum distilling at a pot temperature of 45-65 C. and a pressure of 70 to about 200 ml of mercury until the volume of electrolysed aqueous solution is  to 1/10 of the original volume, (e) allowing the distilled pot residue to cool until hydroquinone crystallizes out of solution and (f) recovering the crystallized hydroquinone.
Patent GB-830189-A (GB)
Title: Improvements in and relating to mordants for soluble compounds of acid character
Inventor: HART RENE MAURICE
IPC: G03C1/835
Filed: 1957-08-23
Abstract: Polymers and copolymers having recurring units of structure <FORM:0830189/IV (a)/1> wherein R represents an alkyl or aralkyl radical, are made by reaction of an alkali hypo-halogenite in alcoholic or aqueous-alcoholic medium with polyacrylamide, or by conversion of vinylisocyanates with alcohols and subsequent polymerization of the resulting carbamates, and such polymers and copolymers are subjected to solvolysis to make compounds for use as mordants for acid dyes in colloid compositions (see Group XX).  Thus polyacrylamide suspended in methanol and aqueous sodium hypochlorite is left for 3 hours at room temperature whereafter the polymer dissolves, the reaction product is separated by acidifying with hydrochloric acid, and the solvolysis (hydrolysis) of such is effected by refluxing in aqueous hydrochloric acid and precipitation with acetone.  A copolymer of benzyl-(N-vinyl)-carbamate and vinyl acetate prepared by heating the monomers with azo-bis isobutronitrile in benzene, and of vinyl isocyanate with alcohol are subjected to solvolysis similarly, and also by heating with hydrobromic or hydrochloric acid in glacial acetic acid, and the precipitated compound is washed with acetone.
Patent GB-1517701-A (GB)
Title: Gas/liquid contact apparatus
IPC: B01J19/32
Filed: 1975-06-24
Abstract: 1517701 Gas/liquid contact E H G PERCEVAUT and C BELIN 24 June 1975 [25 June 1974] 26722/75 Heading B1R [Also in Division F4] A gas/liquid contact apparatus comprises channels 7, 8, 9 for the passage of gas and liquid in different directions defined by opposed panels counter folded to form cells 16 separated by neck regions 17. A heat exchange fluid may be passed through channels 10, 11, 12 and 13.
Patent GB-1184303-A (GB)
Title: Improvements in or relating to Data Transmission Systems
Inventor: VOGL HERBERT
IPC: H04L25/02
Filed: 1968-06-05
Abstract: 1,184,303. Telegraphy. SIEMENS A.G. 5 June, 1968, No. 26759/68. Addition to 1,092,490. Heading H4P. In a digital transmission system a number of filler signals, e.g. Carriage Return signals, are inserted whenever a certain function signal, e.g. CR, appears in the message to be transmitted and are deleted at the receiver. Parallel-bit data from a keyboard Ta passes to a transmitter S and to a unit ES, Fig. 2 (not shown), which detects the presence of a CR signal. Each new signal from the keyboard is accompanied by a signal on FA which normally passes via ES to line FA<SP>*</SP> which controls transmitter S. Transmitter S acknowledges FA<SP>*</SP> by a signal on FB, which passes via ES and FB<SP>*</SP> to the keyboard which can then produce another parallel-bit signal. If a CR signal occurs, ES prevents signals from appearing on FB<SP>*</SP> and consequently the CR signal remains on the keyboard output. Also, FB is now shorted to FA<SP>*</SP> so that acknowledgment on FB causes a signal on FA<SP>*</SP> so that S transmits again the signal held at T. When ES has counted a set number of signals on FA<SP>*</SP>, i.e. when that number of CR signals has been repeated, it returns itself to the normal state and the message proceeds from the keyboard. Receiver E passes parallel-bit data to punch unit L and to unit AS. A signal on FB occurs whenever E receives a signal, AS in turn emitting a signal on FB<SP>*</SP> which controls punch L if two or more consecutive CR signals are detected by AS, line FB<SP>*</SP> is blocked during the second and subsequent such signals so that the punch will record only the first CR. FB<SP>*</SP> is unblocked as soon as the absence of a CR is detected by AS.
Patent GB-264769-A (GB)
Title: Improvements in cranes
IPC: B66C23/10
Filed: 1926-10-26
Abstract: 264,769. Eisenwerk vorm. Nagel & Kaemp Akt.-Ges., and Koch, C. B. Oct. 26, 1926. Jib cranes.-To ensure approximately horizontal travel of the load in luffing, the hoisting rope O is passed over a single compensating pulley k which slides in guides i on the rear part of the jib under the control of a rope l anchored at n and passing over a sheave or step-pulley m on the tail of the jib. The jib is luffed by a motor h and screwed rod, chain, or rope g.
Patent GB-998566-A (GB)
Title: Improvements in or relating to the production of polyolefin extrusion coated packaging materials
IPC: B29C48/08
Filed: 1963-07-08
Abstract: 998,566. Laminates and laminating. MILPRINT Inc. July 8, 1963 [July 11, 1962], No. 26913/63. Heading B5N. A process for applying an extruded film of a polyolefin to a substrate to form packaging material is characterized by the following features: (a) the polyolefin is extruded at a non-oxidizing temperature above its softening temperature and cooled prior to laminating to a film forming temperature below its softening temperature, (b) that surface of the extruded film which will be in contact with the substrate is oxidized prior to lamination, e.g. by corona discharge or flaming; and (c) the surface of the substrate to be contacted by the film is coated with an adhesion promoting material. As shown, a web of substrate material 2 is coated with adhesion promoter at 3 and dried in an oven at 7. It then passes to the nip of a watercooled chill roll 12 and rubber-covered back-up roll 14 which is in contact with a cooling roll 15. The polyolefin material is extruded from a barrel extruder 8 through a die 10 on to the chill roll where it is cooled below its softening temperature. It is then led, via rollers 21, 22 where its surface is oxidized by a corona discharge electrode 13, to the nip of the chill roll and back-up roll where it is laminated to the substrate. The adhesion promoting coating may be a polyester-urethane mixture wherein the polyester comprises a mixed ester of ethylene glycol and aromatic acids. In examples, (a) low density polyethylene films are applied to substrates known under the Registered Trade Marks " Mylar," " Saran," and " Cellophane," or to substrates of paper, nylon or high density polyethylene, (b) medium density polyethylene is applied to nylon, and high density polyethylene is applied to paper, (c) isotactic polypropylene is applied to orientated polypropylene. In each of the examples listed, extrusion temperatures of between 400-490 F. are employed.
Patent GB-1033938-A (GB)
Title: Process and apparatus for the manufacture of phosphorous oxychloride and/or phosphorous-chlorine-oxygen compounds of the general formula: pocl where n>1
IPC: C01B25/10
Filed: 1963-07-08
Abstract: POCl3 or mixtures of POCl3 with PnO2n- 1 Cln+2, n> 1, are made by reacting yellow P with Cl2 and O2 in a liquid medium in which it is at least partially soluble, the liquid medium consisting of POCl3 or a mixture of POCl3 with PnO2n- 1Cln+2 compounds.  The reaction may carried out at 50-140 DEG  C.  For the production of POCl3 alone, the stoichiometric amount of Cl2 and an amount 10-20% in excess of the stoichiometric amount of O2 are used.  POCl3 is separated from the reaction solution by distillation. PnO2n- 1Cln+2,n> 1, compounds are obtained, in addition to POCl3, by reducing the amount of Cl2 and increasing the amount of O2 used, e.g. 2Pyellow + 2Cl2 + 3/2 O2-->P2O3Cl4. These compounds may be separated from the reaction mixture in a second stage under reduced pressure.
Patent GB-228813-A (GB)
Title: Improved base-plate for grooved wheel, colliery haulage
IPC: B66D3/04
Filed: 1924-11-12
Abstract: 228,813. Aytoun, R. Nov. 12, 1924. Addition to 200,034. Guide rollers.-The base plate described in the parent Specification for mounting the guide wheels of colliery haulage systems is modified by the provision of two upstanding side ribs B, C instead of one central rib. The ribs project forward so far that a line joining their inner extremities passes within the periphery of the lower edge of the pulley, thereby preventing the rope from working down below the pulley.