baber/WOPTO huggingface dataset:
Patent GB-1501906-A (GB)
Title: N,n'-disubstituted sulphonyl hydrazines
IPC: C08J9/10
Filed: 1975-12-23
Abstract: 1501906 N,N<SP>1</SP>-disubstituted sulphonyl hydrazines UNIROYAL Inc 23 Dec 1975 [11 April 1975] 18435/75 Heading C2C [Also in Division C3] The invention comprises compounds of the formula wherein R is a hydrocarbyl radical, R<SP>1</SP> and R<SP>2</SP> are each -COOR<SP>3</SP> or -CONHR<SP>4</SP>, R<SP>3</SP> is a hydrocarbyl radical, R<SP>4</SP> is H or a hydrocarbyl radical and n is 1 or 2. N,N<SP>1</SP>-Dicarboxylate sulphonyl hydrazines may be obtained by (1) reacting a sulphinic acid of the formula  with an azodiester of the formula (2) reacting a sulphonyl hydrazide of the formula with a haloformate of the formula wherein X is Cl or Br, or (3) reacting a sulphonyl carbazate of the formula with a haloformate of the above formula. N - Carboxylate - N<SP>1</SP> - carbamyl sulphonyl hydrazines may be obtained by reacting a sulphonyl semicarbazide with a haloformate of the above formula. N-Carbamyl-N<SP>1</SP>-carboxylate sulphonyl hydrazines may be obtained by (1) reacting a sulphonyl carbazate of the above formula with an isocyanate of the formula wherein R<SP>4</SP> is a hydrocarbyl radical; or (2) reacting a sulphinic acid of the above formula with a 1-carboxylate-2-carbonamide-diimide of the formula which also produces isomeric N-carboxylate-N<SP>1</SP>- carbamyl sulphonyl hydrazines. N,N<SP>1</SP>-Dicarbamyl sulphonyl hydrazines may be obtained by reacting an azodicarbonamide of the formula with a sulphinic acid of the above formula. Bis-compounds of the formula may be obtained by reacting a sulphonyl hydrazide of the formula with a haloformate of the above formula. Other bis-compounds are obtained by analogous methods. The products are useful as blowing agents for gas-expandable polymers.
Patent GB-439980-A (GB)
Title: Improvements in electric cables
IPC: H01B7/02
Filed: 1934-06-22
Abstract: 439,980. Cables. CALLENDER'S CABLE & CONSTRUCTION CO., Ltd., and ROBINSON, D. M., Hamilton House, Victoria Embankment, London. June 22, 1934, No. 18437. [Class 36] To prevent breakdown of the innermost layers of dielectric in a high tension cable having an impregnated fibrous dielectric, the conductor is formed with a smooth non- re-entrant surface and a thin continuous sheath of homogeous insulating material impervious to the impregnating compound is interposed between the conductor and the impregnated dielectric. The impervious sheath is built up of one or more helical lappings of strip of thickness not exceeding 2 mils and may consist of cellulose esters or ethers, polystyrenes, or oil-resisting rubber-like compounds, such as olefine polysulphide compounds. The smoothing of the surface of the conductor may be effected by building it, or the outer part of it, from wires of a section appropriate to give a continuous cylindrical form. Alternatively a conductor formed of stranded round wires may be lapped with metal tape or metallized paper, or provided with an extruded lead sheath ; or the inner surface of the impervious layer may be metallized. In the construction shown, a stranded conductor 11 is enclosed in a tubular metal sheath 18 over which is applied the thin impervious insulating sheath 15 and a thick body of impregnated paper insulation 13. A small gap is left between adjacent turns of the strip forming the sheath 15 and the turns in adjacent layers of the strip are staggered. To prevent breakdown of the outer layers of the insulation 13, a thin impervious insulating sheath 16, similar to the sheath 15, is disposed between the outer surface of the insulation 13 and the usual metallized layer 17 which surrounds the insulation. Specifications 175,753, [Class 36], and 407,718 are referred to.
Patent GB-623398-A (GB)
Title: Improvements in or relating to electric discharge-tube circuits
IPC: H03B5/18
Filed: 1946-06-19
Abstract: 623,398. Thermionic valves. PHILIPS LAMPS, Ltd. June 19, 1946, No. 18445. Convention date, April 17, 1942. [Class 39 (i)] [Also in Group XL (c)] In a push-pull amplifier or oscillator for ultra-high-frequencies, tubular parallel conductors placed over the insulating walls of triode valves 1, 2 having cylindrical anodes form a capacitively coupled output circuit minimizing H.F. losses, heating of the anode lead-in seals and neutralizing adjustments when valves are replaced. Adjustable conductors 23, Figs. 4, 5 (not shown), facing the tubes 10 form neutralizing condensers. The lead-ins 13 to the anodes 6 are by way of chokes 12. Similar tubes 9 mounted over the valve bases are connected by rings 17 and conductors to the grids 6. The cathodes 18 are connected to base pins 19 symmetrically connected by straps 16. A plate 22 screens the conductors 9 and 10.
Patent GB-1412697-A (GB)
Title: Aluminothermic production of magnesium and an oxidic slag containing recoverable alumina
IPC: C22B5/04
Filed: 1973-04-17
Abstract: 1412697 Producing magnesium and alumina J M AVERY 17 April 1973 [18 April 1972] 18475/73 Heading C1A [Also in Division C7] Magnesium is produced by charging an oxide mixture comprising magnesium oxide and calcium oxide and a metallic reducing agent comprising at least 85% aluminium into a reactor and maintaing therein a molten calcium aluminate slag, removing when the magnesium oxide content of the slag is less than 5% by weight slag comprising from 35 to 65% by weight Al 2 O 3 , 35-55% CaO and from 0 to 10% SiO 2 , evolving magnesium vapour from the reactor to a condenser and condensing and recovering the mangesium. The slag produced may be self-disintegrating upon slow cooling or may be ground, the resulting powder being leached with sodium carbonate for one or two hours at 70 C. to produce calcium carbonate and sodium aluminate which is carbonated to produce aluminium hydroxide which may be calcined and used as cell feed alumina or may be subjected to a desilication step before use as cell feed alumina. The aluminium so formed may be recycled as a reducing agent. The so formed calcium carbonate may be calcined to produce CO 2  for use in the carbonation process and CaO which is recycled.
Patent GB-1150436-A (GB)
Title: Oscillator Circuit for the Measurement of Capacitance Differences
Inventor: BJEREDE BJOERN ERIK
IPC: G01R27/26
Filed: 1966-04-27
Abstract: 1,150,436. Capacitance measurement. B.E. BJEREDE. April 27, 1966 [April 27, 1965], No.18477/66. Heading G1U. [Also in Division H3] Capacitance change is measured by means of an R. C. connected oscillator circuit, the variable capacitance to be measured being connected in parallel with the oscillator feedback path. To measure changes in the difference between two capacitances 4 and 5 each is connected between a  respective one of two opposite polarity outputs of an amplifier 1 and the amplifier input, in parallel with a feedback path 6. A potential divider 8 controls the amount of feedback. The oscillator frequency changes in correspondence with change in the difference between the capacitances 4 and 5 and may be indicated by a counter.
Patent GB-1214073-A (GB)
Title: Hydraulic valve section
IPC: F15B13/04
Filed: 1968-04-18
Abstract: 1,214,073. Valves. COMMERCIAL SHEARING & STAMPING CO. 18 April, 1968 [19 Sept., 1967], No. 18484/68. Heading F2V. An hydraulic valve section for attachment to other sections to form a multi-valve arrangement comprises a hollow spool 16 movable longitudinally in a bore 14 of a body having inlet ports 18, 19, outlet port 20, working ports 28, 30 and exhaust ports 34, 35. A branch port 22 is connected to a transverse bore 24 connected with the inlet source of pressure. A spring 40 biases the spool to the neutral position shown in which the inlets 18, 19 are connected to the outlet 20 and the working ports are blocked. Leftward movement of the spool into working position A blocks the open-centre to pressurize the inlet and connects the branch inlet 22 via radial holes 57 and 59 in the spool, check valve 60 and the spools longitudinal bore 52 to working port 28. Working port 30 is connected via groove 66 to exhaust 35. Movement to the right to working position B again blocks opencentre and connects inlet 18 to working port 30 via groove 66, working port 28 being connected via radial spool ports 57, 59, bore 52 and check valve 60 to exhaust 34 and via radial spool ports 57, 54 and bore 52 to exhaust 35. Further movement of the spool to the right to float position C interconnects the two working ports 28, 30 via bore 52 and radial spool ports 57, 54 which are both also connected via check valve 60 and a clearance 20 between the bore 14 and the spool to exhaust 34. The open-centre is again produced by grooves 66, 67 interconnecting inlets 18, 19 and outlet 20. Balls 46 engaged between annular shoulders 43, 44 of the spool lock the latter in the float position and are held between the shoulders by an inclined surface 48 of a spring-loaded sleeve 47. Check valve 39 can replenish fluid to the working ports in the float position to prevent cavitation. A relief valve 38 is connected between working port 28 and exhaust 34.
Patent GB-1139232-A (GB)
Title: Improvements relating to thermomagnetic recording
IPC: G03G5/16
Filed: 1966-04-27
Abstract: 1,139,232. Magnetic printing. E. I. DU PONT DE NEMOURS & CO. 27 April, 1966 [27 April, 1965; 17 June, 1965], No. 18497/66. Heading B6C. [Also in Divisions G5 and H1] A master record is placed in contact with a magnetizable blank which is then heated and cooled through; a temperature at least in the vicinity of its Curie. temperature, thereby recording on the blank an amplified copy of the signal on the master record. In the embodiments described, the copying blank is in the form of a tape carrying a magnetizable layer (containing chromium dioxide particles); or a succession of such layersof different Curie temperatures so that a signal may be repeatedly copied and amplified on a single tape. The master record may take the form of a tape (Figs. I and II), a rotating drum carrying, an array of magnetizable zones (Figs. IIIA, IIIB and IV), or an endless belt running on two rollers and in contact at one roller with a copying tape wrapped round a third roller which in turn makes contact with a second copying tape wrapped round a fourth roller. Heating of the copying blank is effected by radiant energy, such as a flash from a xenon arc lamp, or a beam from an infra-red heater directed at a moving copying tape at a point just before it engages the master record. The radiant energy falling on the copying blank may be modulated by an interposed grating or transparency. The recorded magnetic signal may be indicated visually by means of ferromagnetic powder.
Patent GB-740781-A (GB)
Title: Device for changing the position of coal-face conveyors
IPC: E21F13/08
Filed: 1953-07-03
Abstract: 740,781. Pushing-jacks. BEUKENBERG, H., [trading as MASCHINENFABRIK GLUCKAUF G. KLERNER]. July 3,1953 [Sept. 26, 1952], No. 18504/53. Class 78 (3). A double-acting hydraulic jack adapted to move a coal face conveyer comprises a cylinder 1 pivoted at 3 to the conveyer 2, and a pistonrod 4 pivoted at 9 to a ground-engaging foot 8 to which a reaction strut 10 is pivoted at 12. As shown, the ground contacting portion of the foot 8 is flat, but in a modification (not shown) it is curved and serrated. The jack may comprise either a single piston and cylinder unit or a pair of such units operating in parallel between the conveyer and strut. A ratchet bar pivoted at 22 to the piston-rod or rods and engaging a pawl 15 rigid with the cylinder or cylinders forms a feed stroke limiting device. A spring 13 urges the strut 10 upwardly.
Patent GB-146497-A (GB)
Title: An improved fore-body for motor cars with enclosed driver's seat
IPC: B60J1/20
Filed: 1920-07-05
Abstract: 146,497. Boulogne, A. Nov. 13, 1913, [Convention datel. Bodies.-In a motor-car with an enclosed driver's seat, the front uprights of the doors of the fore body are interrupted and the adjacent uprights usually forming parts of the body frame are dispensed with so as to provide a free field of sight to the driver. As shown, the door a, b, c, d, e, Fig. 1, is interrupted between a and e, and is secured to the lower part of the body by hinges f, g and to the top or hood at a by a pivot which may be of the type shown in Fig. 4. The glass front is in two parts hinged to the top and lower part respectively. Each door is provided with a slidable glass which, when raised, is held in place by the upright b, h the upright portion e, i, and at the top by the cross-bar a, b, it being possible, to open and close the door without lowering the glass.
Patent GB-795314-A (GB)
Title: Improvements relating to apparatus for drying textiles
IPC: F26B13/02
Filed: 1955-06-29
Abstract: 795,314. Drying fabrics. ADAMS, G. W. Sept. 28, 1956 [June 29, 1956], No. 18742/55. Class 34(1) Apparatus for drying textiles in long lengths comprises a chamber having superposed endless-band conveyers 11, Fig. 2, mounted on end rollers 12 driven by gearing. The conveyers 11 are made of, e.g. hessian and have a narrow edging 13 of stout rubber. Above and below the upper run of each conveyer are air casings 14, 15 each casing 15 having openings in its lower face and a side inlet ducting through which it receives hot air. The casings 14 are identical with the casings 15 but are fitted the opposite way up. Warm air directed downwards from a casing 15 is received by a casing 14 and returned to a fan and heater for recirculation. Each casing is divided by a plate 15b, Fig. 7, and is made with telescopically-adjustable wings 15c. The wings are attached to vertical rods 16 having worm wheels 17 operated by worms 18 mounted on upper and lower shafts 19, interconnected by a chain 21 and sprockets 22. When the shafts 19 are rotated by hand, the rods 16 move inwards and outwards as required. The web may be face to the drier by a roller formed of pivoted slots e.g. Fig. 4, the ends of the pivots moving in grooves 29a formed in end plates 29.
Patent GB-1275463-A (GB)
Title: Control system encoder
IPC: A63H30/04
Filed: 1969-04-11
Abstract: 1275463 Controlling model aircraft STAVELEY INDUSTRIES Ltd 10 July 1970 [11 April 1969] 18783/69 Heading B7W [Also in Division H3] A code pulse producing circuit e.g. for radio control of a model aircraft, comprises means which selectively switches the circuit to a second state or alternatively to its second state then to its first state and back to its second state, the time delay between switching being adjustable. As shown, the operation of switch S1 to position R switches transistor T2 off. In position L, T 2  is switched off via capacitor C2 until the latter has discharged through VR1 when it switches on again. The operation of the switch to R also switches off T1 but after a longer delay determined by R1 and VR1 it switches on again to switch off T2. Switching S1 from L to R or vice versa produces an additional on and off. Operation of switch Pb switches T2 off for a time which is short since R3, R4 is chosen so that only a small discharge is necessary. In model aircraft control the circuit is used to key a radio carrier or the modulation of the carrier. The control in the aircraft comprises a disc normally held by a first pawl in a neutral position but which, upon release of the pawl, rotates at a speed related to the timing of the control pulse sequence, to first, second or third positions where rotation is interrupted by a further pawl operated in accordance with the corresponding sequence. The three positions provide for left, right and climb control of the craft. The short pulse provides for control of the throttle at a disc position close to neutral.
Patent GB-427518-A (GB)
Title: Improvements in colour photography
IPC: G03C7/407
Filed: 1933-09-21
Abstract: 427,518. Colour photography. KODAK, Ltd., Kodak House, Kingsway, London.- (Assignees of Mannes, L. D., and Godowsky, L. ; Kodak Park, Rochester, New York, U.S.A.) Sept. 21, 1933, No. 18934/34. Convention date, Sept. 21, 1932. Divided out of 427,472. [Class 98 (ii)] Relates to the differential processing of superimposed layers containing different colour-sensation records on the same side of a single support by restricted penetration of a bleaching bath or a developing bath and consists in controlling the penetration by the use of water-soluble loading-agents, by the provision of a gelatine layer between the emulsion layers, and by the use of stop baths. Thus a film comprising two emulsion layers separated by a gelatine layer, colour-developed to a minus-green, as described in Specifications 427,516 and 427,520, is subjected to the action of a chromic acid-bromide bleach bath loaded with methanol and the action is terminated by the use of a stop bath consisting of ammonia with or without sulphite and methanol. In an alternative method, wherein a two-layer film is exposed, developed, fixed and bleached, as described in Specification 427,472, the upper layer only is redeveloped by an hydroquinone or amidol developer loaded with sodium sulphate and development is arrested by immersion in an acetic acid stop bath maintained at a very low temperature, e.g. 0-5‹ C. After colour - developing the lower layer to a minus-green, the upper layer is bleached in a ferricyanide bath loaded with sodium sulphate and the action is arrested by a stop bath of hydroxylamine or hydrazine and ammonia. Specification 376,838 also is referred to.
Patent GB-1035435-A (GB)
Title: Device for separating dust from a gaseous fluid and method of constructing same
IPC: B01D45/16
Filed: 1964-05-07
Abstract: 1,035,435. Separating solid particles from gas stream. FARR CO. May 7,1964 [Feb. 28, 1964], No. 19131/64. Heading B1T. Dust particles are separated from gas by curved blades which cause a reversal of the direction of gas flow while the particles are maintained on a straight path by inertial effects. As shown, Fig. 6, the dust carrying air enters the device at 25 and is reversed in directions upon entering through the openings 24, the passages 23 between the blades 30. The dust continues to move in the direction 25 towards the slot 22 through which it is carried by a small portion of the inlet air. Clean air emerges at the openings 35. The blades are profiled to minimise turbulence. In an alternative form, Fig. 8, the blades are assembled along a spiral curve, the contaminated air enters at 52 while clean air and dust emerge at 56 and 55 respectively.
Patent GB-876737-A (GB)
Title: Purification of solid polymers
IPC: C08F6/02
Filed: 1958-06-16
Abstract: Residues of a Ziegler-type catalyst are removed from a solid polymer of an olefinic monomer by countercurrent extraction of a slurry of the polymer (in an organic liquid in which the polymer is not more than sparingly soluble) with a liquid which is a solvent for the residues of the catalyst but which, under the extraction conditions, does not extract the polymer from the organic liquid and which is not more than partially miscible with the organic liquid in which the polymer is slurried and withdrawing, as separate phases, a slurry comprising the organic liquid and the polymer and a solution of catalyst residues in the solvent therefore.  The polymer may be derived from ethylene, propene, butene, butadiene, styrene, pentene, vinylcyclohexene, isoprene or an alkylvinyl ether and may be a copolymer of these. The preferred solvents are alcohols and phenols, which may be diluted with water, and aqueous media may also be used. The alcohol solvent may be mono-, di- or tri-hydric.  The liquid slurrying medium may be a hydrocarbon, a halogenated hydrocarbon or an ether and it is preferred to use a solvent with a greater density than the slurrying medium.  Water may be used as the solvent and a wetting agent may be added or dilute acid may be used.  An apparatus for the continuous polymerization and extraction of the product from a gaseous monomer is described. Specifications 795,370, 799,392, 799,823, 801,031 and 842,872 are referred to.
Patent GB-1140630-A (GB)
Title: Improvements relating to synchronising clutches for change-speed gearing
IPC: F16D23/06
Filed: 1967-04-26
Abstract: 1,140,630. Positive clutches. DAIMLERBENZ A.G. 26 April, 1967 [30 April, 1966], No. 19171/67. Heading F2C. Synchronous engagement of positive clutches for selectively connecting either of two freely mounted gears 15, 16 to a shaft 11, e.g. in a motor vehicle change-speed gear, is facilitated by balk rings 24, 25 held together by spring clips 26 and having axial projections (42), Fig. 5 (not shown) passing through slots (39), Fig. 4 (not shown), in a shift sleeve 19 splined on a carrier 18 on the shaft 11. Axial movement of the sleeve 19, e.g. to the left, by a shift fork 23, brings the ring 24 into engagement with a frusto-conical friction surface 33 on a ring 31 shrunk on the gear 15, rotating the ring 24 relative to the sleeve 19 to bring balk surfaces (45) on projections (42) into engagement with similar surfaces (40) on the ends of slots (39) inhibiting further movement of the sleeve 19 On synchronism being achieved, the sleeve may be moved against the action of a spring ring 27 carried by the sleeve and radially abutting a groove 30 in balk rings 24, 25, to engage splines 20 on the sleeve 19 with dog teeth 21 on the gear 15. The sleeve 19 is formed from two ring parts which may be shrunk or welded together, the outer ring part being formed with notches on its inner periphery to form, with the inner ring part, the slots (39). 1,140,633. Valves. DIENES WERKE FUR MASCHINENTEILE G.m.b.H. 1 May, 1967, No. 20048/67. Heading F2V. The valve plate of a compressor check valve has arms 1 bent out of the plane thereof and clamped at their free ends 2 between a seat and a guard. Clamping rings formed integral with or separate from the seat and guard are positioned between the latter and are provided with conical or spherical projections or with ball bearings or prismatic wedges whereby point or line contact with the ends 2 is achieved. Portions 5 of the arms co-operate with the inner ports of the seat. The arms may be bent to different extents to avoid tilting of the valve plate. In a modification, the valve plate is rectangular with parallel slots and the arms are located parallel to two opposite sides of the plate and to the slots.
Patent GB-516580-A (GB)
Title: Improvements in amusement devices
IPC: A63G31/00
Filed: 1938-06-28
Abstract: 516,580. Amusement apparatus. KING, H. J. June 28, 1938, No. 19195. [Class 132 (i)] An amusement device comprises a body 10 mounted so as to rotate on trunnions 11 and 11a about a horizontal axis, and containing a turntable 17 rotating about an axis 15 at right angles to the horizontal axis. The turntable 17 bearing seats 17a is caused to rotate around its axis 15 while simultaneously the body 10 rotates on its trunnions 11 and 11a. Trunnion 11 is hollow to permit the passage of a shaft 25 which drives the turntable ,17 through bevel gearing 30 and 31 and belt drive 34. A member 45 and 48 controlling a turntable brake 20a passes through the other trunnion 11a.
Patent GB-341381-A (GB)
IPC: B61F17/20
Filed: 1930-06-24
Abstract: 341,381. Axle-boxes. FALZ, E., 25, L÷ns Strasse, Hanover, Germany. June 24, 1930, No. 19246. Convention date, June 24, 1929. [Classes 12 (i), 12 (ii), and 12 (iii).] Lubricant conveyed by mechanical means ;dust, excluding.-Inanaxle-box provided with a closed bush c, the upper part of which is grooveless while the lower part is provided with a recess e which does not extend to the ends, oil thrown or scraped from a disc l dipping into a well at the bottom of the box and secured to the journal by a nut x is guided by ribs h, i into recesses g in the sides of the box, whence it passes into the recess e through passages f below the axis of the bearing. At slow speeds, oil carried up by the disc flows through radial grooves k therein into a space m formed by bevelling the end of the upper half of the bush, and thence through passages n at the ends of the space into the recesses g. Dust is excluded from the box by packing s held by a sheet-metal flanged ring t secured to the box. According to the Specification as open to inspection under Sect. 91 (3) (a) the disc l may be replaced by scoops or vanes, and the nut x may be locked by the means shown in Fig. 4 (Cancelled). This subject-matter does not appear in the Specification as accepted.