baber/WOPTO huggingface dataset:
Patent GB-802426-A (GB)
Title: Production of carbon disulphide
Filed: 1956-06-05
Abstract: <PICT:0802426/III/1> In the production of carbon disulphide by the catalytic or non-catalytic interaction of sulphur and a hydrocarbon gas at a temperature of 450-700 DEG  C., substantially pure sulphur obtained from natural sulphur containing a substantial amount of carbonaceous impurity is used.  The natural sulphur preferably contains a maximum of 0.06 per cent as carbonaceous material.  An excess of 4-10 per cent of sulphur may be employed.  The purified sulphur may be used alone or together with unpurified sulphur. The purified sulphur may be obtained by ordinary distillation, by recovery of excess sulphur used in the production of carbon disulphide using purified or unpurified sulphur, or by conversion of by-product hydrogen sulphide obtained in the production of carbon disulphide using purified or unpurified sulphur. By-product hydrogen sulphide may be converted to sulphur by partial oxidation, or by reaction with sulphur dioxide obtained by the oxidation of by-product hydrogen sulphide or unpurified sulphur.  A reactor may be fed initially only with unpurified sulphur and purified sulphur recovered after the reaction may be recycled to the same reactor in admixture with further unpurified sulphur.  Alternatively, the purified sulphur may be recycled in whole or in part to a further reactor.  Two reactors may be employed in parallel with common sulphur recovery means.  The recovered sulphur may be recycled in such a manner that one reactor is fed only with purified sulphur or a mixture of purified and unpurified sulphur containing more than 50 per cent of purified sulphur and the other reactor is fed only with unpurified sulphur or a mixture of purified and unpurified sulphur containing more than 50 per cent of unpurified sulphur.  The sulphur feed of the first and second reactors may be periodically reversed.  As shown, in a process using two reactors crude sulphur from line 7 and chemically recovered sulphur from both reactors from line 29 may be fed via mixing and storage vessel 8 and line 10 to one reactor, and sulphur from storage vessel and line 8a and recycled excess sulphur from both reactors from line 16 fed via mixing and storage vessel 32 and line 10a to the other reactor.  Chemically recovered sulphur from line 29a may alternatively be passed direct to storage vessel 32. Specification 802,425 is referred to.
Patent GB-173926-A (GB)
Abstract: 173,926. Birmingham Small Arms Co., Ltd., and Baylay, W. L. Nov. 1, 1920. Japanning.-Cycle and other parts are coated electrolytically with zinc and, after cleaning, are then enamelled with a thin coating of a highly elastic enamel, for example, one containing rubber. They are then stoved.
Patent GB-1052323-A (GB)
IPC: C08L77/00
Filed: 1965-04-26
Abstract: 1,052,323. Fibres made from polymer blends, polyamide compositions. KURASHIKI RAYON KABUSHIKI KAISHA. April 26, 1965 [June 11, 1964], No. 17428/65. Headings C3G, C3P and C3R. Fibres are made by melt spinning a blend of a polyamide, a styrene polymer and a graft polymer of polyamide and polystyrene. Polyamides specified include nylon-6, nylon-66, copolyamides and polyesteramides. Styrene polymers specified are polystyrene and copolymers of at least 60% styrene with vinyl chloride, acrylonitrile, ethylene, propylene and butadiene. The graft polymers may be made either by polymerizing styrene in the presence of a polyamide, preferably one which has been pre-irradiated with gamma rays, or by polymerizing a lactam, e.g. caprolactam, in the presence of a styrene-acrylic acid copolymer. The amount of grafted material in the polymer may be 30-120%. 0À1-10% of the polymer may be used.
Patent GB-526096-A (GB)
Title: Improvements in bevel gear wheels and in the process of producing same
IPC: B23F9/08
Filed: 1938-06-11
Abstract: 526,096. Gear-cutting. BEGER, E. R., and PREIS, G. W. June 11, 1938, No. 17429. Convention date, June 12, 1937. [Class 83 (iii)] [Also in Group XXIV] Mating bevel gears having non-radial teeth are produced by a cutter which, in the case of one of the gears, operates tangentially with respect to the blank in a plane tilted in one direction with respect to a plane perpendicular to the axis of the gear and, in the case of the other gear, operates in a plane tilted in the opposite direction. The effect is to give one wheel 2, Fig. 1, teeth increasing in height from the major to the minor diameter, and the other wheel 5 teeth decreasing in height from the major to the minor diameter. The hob 8 which is usually set with its periphery parallel to the plane 9, Fig. 5, is, according to the invention, tilted to an angle a or α<SP>1</SP>, Fig. 4, to such plane. The tooth flank contours so produced are such that the concave flanks 19 of the teeth 21, Fig. 6, are more strongly curved than the convex flanks 20 and, vice versa, in the case of the teeth 17 where the convex flanks 16 are more strongly curved than the concave flanks 15. The tilting of the hob also places the tooth flanks 23, 24, Fig. 7, in an altered angular position relative to the plane 9. For an adjustment according to Fig. 5, the flank 23 has an angle #, equal to #-α and the flank 24 an angle # 2  equal to # + α. Conversely, with the adjustment according to Fig. 4, the angle # 4  is equal to # + α, and the angle # 3  to # - α.
Patent GB-116647-A (GB)
Title: Improvements in Mechanical Underfeed Stokers.
Inventor: VASSILIADI HECTOR
IPC: F23K3/10
Filed: 1917-11-26
Abstract: 116,647. Vassiliadi, H. Nov. 26, 1917. Mechanical stoking; grates; ashes, removing.-In a mechanically - operated furnace, fresh fuel is fed into the bed beneath a superincumbent layer of burning fuel by an endless grate formed of tilting elements 1, and the burning fuel is gradually transferred from the back of the furnace to the front by reciprocating rakes 21. Each elerrent 1 extends the full width of the grate, and is formed with perforated plane and curved surfaces 2, 3, respectively, the elements being linked together by chains 11. connected by rods 6 passing through the elements. A second rod 7 passes through each element, and both rods are extended to engage grooves or guides in the side walls of the other casing. On the upper run of the chain these guides are so arranged relatively to one another that beneath the feed hopper 14 V-shaped recesses 18 are formed between adjacent elements, which recesses are gradually reduced as the grate advances, until at the fire-bridge 5 the plane surfaces 2 are again in alinement. The rakes 21 extend across the width of the furnace and are mounted on trunnion bearings 54, Fig. 4, in reciprocating air boxes 22 carried by the side casings of the stoker. Each rake is of the section shown in Fig. 5 and consists of an outer casing 48 and an inner tube 49 from which air is delivered to the furnace through a slot 53. During their wording stroke towards the front of the furnace, the rakes are held vertically, but on the return stroke, they are fitted to clear the fuel bed. The operating-mechanism comprises a pair of bars 25 projecting into the boxes 22 and free to move relatively thereto for a short distance under control of stops 29, 30, Fig. 7. Outside the boxes these bars have racks on their upper and lower surfaces engaged by pinions driven from a shaft through clutches, which are automatically thrown in and out to provide the required reciprocation. Within the boxes the bars have racks on their upper surfaces only engaging teeth 27 on the trunnion bearings 54 of the rakes. During the period in which the bars 25 move independently of the air boxes, the rakes are tilted into operative or idle position, and when the stops 29, 30 butt against the ends of the air boxes, the rakes and boxes are reciprocated together. The two trunnion bearings of each rake are secured together by rods 57 and are held in air and water tight contact with the inner tube 49 and the ends of the rakes. Cooling water is supplied or exhausted through pipes 59 in the air boxes connected by tubes 61, 62 with the space between the outer shell 48 of the rake and the inner tube 49. A gland 64 allows free rotation of the tube 61. Ashes &c. are discharged at the front of the furnace through a breeches pipe 66.
Patent GB-145277-A (GB)
Title: Improvements in electric bell apparatus
IPC: G10K1/063
Filed: 1919-07-12
Abstract: 145,277. Davis, A. L. July 12, 1919. Bell-operating mechanism, electric.-An electric bell, suitable for use in aircraft or the like where explosive vapour is carried, has the make-andbreak contacts 3, 4 enclosed in an air-tight chamber, the open side of which is closed by a concentrically corrugated resilient diaphragm 2 carrying a reciprocating armature 5 guided by a stem 7 in the boss of a mushroom electro-magnet 8. The spring bell clapper 9 is mounted on the chamber by means of adjustable leaf springs 10 and a connecting-ring 11 pivotally connected to the armature stem at 14. The contact 3 is mounted ou a spring 15 on the diaphragm, and the contact 4 on an adjusting-screw 16 passing gas-tight through the chamber wall. Contact between the armature and the magnet poles is prevented by brass distance-pieces 17 and a washer 18.
Patent GB-581549-A (GB)
Title: Improvements relating to anodes for the electrodeposition of nickel
IPC: C25D17/10
Filed: 1944-09-13
Abstract: 581,549. Anodes for electrodeposition of nickel. MOND NICKEL CO., Ltd., and PFEIL, L. B. Sept. 13, 1944, No. 17504. [Class 41] A plating anode and at least the shank of its suspension hook are both made of electrodeposited nickel; the shank may be integral with the anode or a part thereof or may be united thereto by spot-welding. The actual hooks where not exposed to splashing may be of other metal, e.g., wrought nickel. The anode may comprise a number of laminas spotwelded together, the suspension hook being integral with an intermediate lamina ; the hook may be twisted so that the edges of the laminations are presented to the cathode. Projections may be provided on one member at the parts to be welded. The anode shown in Fig. 5 comprises two sheets 4 between which hooks 2 are mounted and secured by spot-welding. The plates 4. may be spot-welded to intermediate discs 8 of electrolytic nickel. In the anode shown in Fig. 6 the hooks 10 are formed by shearing from the edges of the sheet 1 ; one or more spot-welds may be made at the parts where there is double thickness of metal.
Patent GB-1075162-A (GB)
Title: Process of preparing purified lac
Inventor: WEISS MARVIN
IPC: C09F1/02
Filed: 1965-04-26
Abstract: A process for purifying lac comprises either suspending it in an aqueous alkaline solution which has an alkali metal or ammonium cation concentration such that the resulting lac salt is maintained as a solid phase, or dissolving it in an aqueous, alkaline, alkali metal or ammonium salt or hydroxide solution, and adjusting the alkali metal or ammonium cation concentration so as to precipitate the resulting lac salt as a solid phase, followed in either case by separating the purified lac salt from the residual liquid. The purified lac salt may then be dissolved in water, bleached, precipitated with acid and recovered.
Patent GB-1471596-A (GB)
Title: Method and means for profile finishing welded rails and the  like
IPC: B23K11/04
Filed: 1974-04-22
Abstract: 1471596 Joining rails; rolling; welding by pressure LONDON TRANSPORT EXECUTIVE 14 April 1975 [22 April 1974] 17513/74 Headings B3A B3M and B3R A method of profile finishing elongate steel members, such as rails, includes flash-butt welding the members together and hot rolling the weld to the profile of the elongate members by means of loaded rollers and without reheating the weld. The rolling apparatus comprises three pairs of profiled rolls, the end pairs of rolls la, 1b, 3a, 3b, being provided with means 27 for adjusting the gap between the rolls. The centre pair 2a, 2b are mounted in a loading frame comprising vertical tension bars (14), 15, Fig. 4 (not shown), and a cross-bar 16, while the spindle 17 of the roll 2a is additionally located in pressure equalizing links (21), 22, pivotally mounted on spaced vertical supports (23), 24, Fig. 3 (not shown). After the rails have been flash butt welded, excess metal may be stripped from the  weld and then the weld is passed through the apparatus while still hot. The rolling load is applied by an hydraulic power cylinder 13 and either the apparatus or the joint may be reciprocated to provide multi-pass rolling.
Patent GB-363965-A (GB)
Title: Improvements in or relating to locking devices
IPC: B64D17/32
Filed: 1931-06-16
Abstract: 363,965. Fastenings for strap ends, LUNDHOLM AKTIEBOLAG, C. H., 4, Võstra Tradgardsgatan, Stockholm.-(Assignees of Kuhlemann, S. O. C. ; 49, Hornsgatan, Stockholm.) June 16, 1931, No. 17520. Convention date, June 16, 1930. [Class 44.] Locking devices for securing together the ends of straps, and particularly adapted for locking parachute harnesses, comprises means for releasing the strap ends by the rotation of a screw-threaded member. The strap ends, which are provided with metal covered eyes or the like, may be held by means of bolts 23 pressed by springs 25 against a baseplate 32 of a casing 10, which is provided with a flange 11 for attachment to the waist belt or the like of the harness. Rotation of a screw 13 operated by a handle 17 pivotally connected thereto raises a nut-like member 20 engaging a projection 24 of the bolt 23, and thus lifts the bolt against -the action of the spring 25 until the strap end is released. The bolts 23 are guided through openings in two parallel guide plates 28, 29 which are spaced apart by means of washers 30 through which screws 31 are passed securing the plates to the casing 10. The handle 17 is normally held out of operation by means of a spring catch 18 engaging an inwardly curved portion thereof. The invention may also be employed for locking together the ends of other kinds of straps, for example, trouser belts or harness for horses.
Patent GB-444170-A (GB)
Title: Improved apparatus for screening materials
IPC: B07B1/34
Filed: 1934-06-13
Abstract: 444,170. Sifting-apparatus. ARNOLD, C., 11, Southampton Buildings, Chancery Lane, London.-(Tyler Co., W. S.; 3615, Superior Avenue, Cleveland, Ohio, U.S.A.) June 13, 1934, No. 17522. [Class 117] In sieves of the kind comprising a freely floating resiliently supported sifting surface 4, Fig. 3, which is directly vibrated by electromagnetic or other devices 5, the supporting and tensioning means consist of studs 8 attached to the opposite edges of the sifting surface and passing through openings in the side frame members 3 large enough to permit bodily movement of the surface. The outer ends of the studs are secured by nuts 11 bearing against the ends of helical springs 13. In a modification, the springs may be omitted and the studs themselves made resilient. Fig. 5 shows a further modification in which the freely mounted sifting surface 23 has secured to by resilient or other strips 25 a second sifting surface 24 which is clamped at its edges to tensioning devices consisting of plates 26 fulcrummed on the side frames at their upper edges 28 and secured by draw bolts 29.
Patent GB-1392654-A (GB)
Title: Pressure regulator
IPC: F16L55/045
Filed: 1972-04-17
Abstract: 1392654 Pressure-regulating valves COMPTEURS SCHLUMBERGER 17 April 1972 [16 April 1971] 17646/72 Heading F2V A pressure regulator, preferably having a main valve member 15 controlled by a diaphragm 16, is provided with a damping device interconnecting the outlet 2 and the control chamber 1, the device comprising a tube 3 and a chamber 4 provided with a pair of check valves 5, 6 through one or the other of which fluid can flow between the chamber 1 and outlet 2 depending on whether the pressure at the outlet 2 falls or rises. The check valves are formed by elastic flaps 10, 12 or by spring-loaded balls. The chamber 4 may also have an aperture leading to the chamber 1 and provided with an elastic diaphragm having radial slits, Figs. 3 and 4 (not shown).
Patent GB-365480-A (GB)
Title: Improvements in and relating to signs
IPC: G09F13/26
Filed: 1931-06-19
Abstract: 365,480. Electric discharge tube signs. JAMES, G. S., 6430, North Mozart Street, Chicago, U.S.A. June 19, 1931, No. 17805. Convention date, Oct. 18, 1930. [Class 3 (ii).] In a sign of the type comprising a glass plate illuminated through its edge, the illuminating means comprises an electric discharge tube located in a groove formed in one face of the plate. As shown, two plates 11 are provided with adjacent semicircular grooves 12 in which the discharge tube 13, which forms a rectangular frame round the legend, is accommodated. The grooves are preferably formed by sand-blasting, so that their inner surfaces are mat and the light reaching the eye directly is diffused. The legend 15, which may be provided with a coloured felt background 16, may be formed by sand-blasting, by sticking ground glass characters to the rear of the plate 11, or by writing on it with a china pencil. The tube 12 terminates in a hollow base which contains the transformer and any other necessary equipment, and is provided at its sides with upright extensions 17 within which are arranged channel members 18 for clamping the plates together. Clamping members are also provided at the top of the plates and these are held in position by a wire 20 which is threaded through them and is passed round plates and secured in the hollow base.
Patent GB-516010-A (GB)
Title: Improved method and means for adjusting the level of a screed in the laying of concrete and the like
IPC: E01C19/50
Filed: 1938-06-17
Abstract: 516,010. Moulds for concrete roadways. ELGOOD, F. E. June 17, 1938, No. 18011. [Class 20 (ii)] The level of a screed for use in roadmaking is adjusted by securing eye-bolts B to the screed and providing each eye-bolt with a thumb-screw b' whereby it may be clamped in the desired position on to a ground peg D. A curved bearing surface b<5> may also be provided on the eye of each bolt opposite to the thumb screw. For a wooden screed, Fig. 2, the bolt is secured by a nut b<2> fitting on to a screwed extension thereof, whereas for a metal screed, Fig. 3, a filling piece of wood a<1> is used and the nut b<6> is brazed to the screed.
Patent GB-438534-A (GB)
Title: Improvements in means for improving the power factor of alternating current installations incorporating polyphase motors
IPC: H02P1/32
Filed: 1934-06-19
Abstract: 438,534. Control of A.C. motors. ENGLISH ELECTRIC CO., Ltd., 28, Kingsway, London, ROBERTS, L., and BALL, R. D., Phoenix Works, Bradford, Yorkshire. June 19, 1934, No. 18120. [Class 38 (iii)] A polyphase electrical installation comprises a polyphase electric motor, a star-delta starter 7, and power factor correcting condensers 1, 2, 3 connected across the terminals of the starter on the motor side thereof so that the condensers are connected in star or in delta directly across the supply mains in parallel with the motor windings 6. The object is to avoid opening the condenser circuit when the starter 7 or the switch 8 is actuated. The condensers are preferably of the paper dielectric type and may be incorporated in a unit 4 directly beside the starter-delta starter or they may be disposed separately or as a unit inside the starter.
Patent GB-826730-A (GB)
Title: Electric resistance elements
Inventor: BULGIN DOUGLAS
IPC: H01C7/00
Filed: 1955-06-23
Abstract: 826,730. Strain gauges. DUNLOP RUBBER CO. Ltd. June 19, 1956 [June 23, 1955], No. 18138/55. Class 40 (1). [Also in Group XXXVI] A resistance strain gauge comprises a rubber tube 1 filled with a powdered conducting material, e.g. carbon, gold, tungsten or small particles of rubber coated with a conductive layer, a metallic plug 3 being added at each end. The conductive filling 2 may be mixed with free carbon particles, or talc, or silicone treated materials to enhance the free flowing properties.
Patent GB-331076-A (GB)
Title: Improvement in curtain suspension devices
IPC: A47H15/02
Filed: 1929-06-13
Abstract: 331,076. Smith & Davis, Ltd., Smith, H. F., and Davis, F. L. June 13, 1929. Curtains, suspending.-A channel-sectioned rail 1 has grooved rollers 9 running on its inturned edges 2 bearing dependent cranked arms 23 formed with loops 24 or hooks lying in a plane parallel to that of the roller. Two rollers may be mounted in tandem on a common cranked arm and the upper ends of the arms may be inserted axially in the rollers or formed with an eye to encircle axial studs 25 thereon. Specifications 236,704 and 252,813 are referred to.
Patent GB-879952-A (GB)
Title: Improvements in or relating to magnetic storage circuit-arrangements
IPC: G11C11/20
Filed: 1958-06-06
Abstract: 879,952. Magnetic information-storage devices. PHILIPS ELECTRICAL INDUSTRIES Ltd. June 6, 1958 [June 8, 1957], No. 18144/58. Class 40 (9). A dynamic storage circuit with memory properties in the event of failure of an alternating pulse supply G comprises a pair of cores A, B having rectangular hysteresis characteristics, the cores being set to like remanent states representing binary one or to opposite remanent states representing binary zero by a respective positive or negative pulse applied between a terminal SET and earth. A positive pulse passes over rectifier G1 to the windings WA1, WB on the cores, and successive constant current pulses from the alternating pulse generator repeatedly reverse the core magnetizations so that output pulses are obtained at a terminal S1. A negative pulse is applied to windings WA2 and WB by way of a rectifier G2, and since the cores are brought to opposite remanent states in this case, they remain in this condition as each winding WA 1 , WA 2  in turn provides a short-circuit path for the alternating pulses. No output is then obtained from terminal S1. The output may alternatively be taken across a current-limiting resistor R or from an auxiliary winding on one of the cores.
Patent GB-1262336-A (GB)
Title: Data keyboard by plastic moulding
Inventor: PURDY HAYDN VICTOR
IPC: H04L13/16
Filed: 1969-04-09
Abstract: 1,262,336. Typewriters. H. V. PURDY, and R. C. McINTOSH. 9 April, 1970 [9 April, 1969], No. 18171/69. Heading B6F. Keyboard construction.-Each plastic keylever 1 has moulded into it one end of an elastic electrical conductor wire or strip 5 (which acts as a key-return spring), one end of an electrically conductive pin 6, and a conductor 7 electrically connecting the strip 5 and pin 6. The key-lever 1 is pivoted, without lateral restraint, on a common pivot-rod (9, Fig. 2). The rod (9) can have a flat (10) which enables the key-lever to be slotted on to the bar at an angular position outside the operational angle of swing. The rod (9) is supported at regular intervals (e.g. every 16 key-levers) by key-board brackets 11, Fig. 1, and (Fig. 2), which are bolted to the machine frame. A tensioning bar 17 (which acts as a common terminal for the key-lever circuits 5, 6, 7) is selectively positioned between two vertical pegs 16 in apertures 15 in the key brackets 11, so as to tension the strips 5 to act as key-return springs. An electrical contact assembly is supported below the key-levers on platforms 18 and 19 of the brackets 11, and has three main parts: (1) a printed circuit board 20 for generating binary codes; (2) a contact comb consisting of a plurality of L- shaped metal wires moulded into a plastics block 21 with short tines 22 extending downwards into contact with the printed circuit board 20, and long tines 23 extending longitudinally beneath the key-levers 1; and (3) a plastics slotted guide 30 for constraining the lateral and vertical movement of the assembled key-levers. Depressing a key 81, 82, 83 or 84 (which may be integrally moulded to the keylever) causes the pin 6 of that key-lever to move downwards and into contact with the long tines 23 of two adjacent L-shaped contact wires, thereby completing two circuits to the printed circuit board. A vertical separating comb (not illustrated) of plastics material can be provided midway along the upper part of the key-levers. The support arms at each end of the comb are pivoted to the pivot-rod (9) so that comb can be raised to permit insertion and withdrawal of individual keys. A tape interlock is provided.