baber/WOPTO huggingface dataset:
Patent GB-1349364-A (GB)
Title: Flame resistant composition
IPC: C08K5/03
Filed: 1971-04-27
Abstract: 1349364 Flame resistant compositions UNIROYAL Inc 27 April 1971 [22 May 1970] 11581/71 Headings C3R and C3G A flame resistant composition comprises (A) a terpolymer of an acrylic monomer, butadiene, and styrene or a styrene-type compound, (B) a linear thermoplastic polyarylene polyether polysulphone and (C) hexabromobenzene or hexabromodiphenylether, and optionally (4) antimony oxide. A preferred blend comprises 30-70 p.b.w. of (A), 70-30 p.b.w. of (B), 4-14 p.b.w. of (C), or a mixture of 4-7À5 p.b.w. of (C) and 1À5-5 p.b.w. of (D). The terpolymer is preferably an acrylonitrile-butadiene-styrene (ABS) gum plastic. A styrene-type monomer such as alpha-methyl styrene, and another acrylic monomer such as methacrylonitrile, ethyl acrylate or methyl methacrylate may be substituted for some or all of the styrene and acrylonitrile, respectively. Preferred polysulphones have recurring units of the formula where R is a direct bond, or a divalent radical such as -CO-, -O-, -S-, -S-S-, -SO 2 -, or alkylene, alkylidene, cycloaliphatic radicals or the halogen, alkyl or aryl-substituted derivatives thereof, and R<SP>1</SP> is a -SO 2 -, -CO-, vinyl, sulphoxide, azo, saturated fluorocarbon, organic phosphine oxide or ethylidene group, and Y and Y 1  are halogen, C 1-4  alkyl or C 1-4  alkoxy groups, and r and z are integers from 0-4. The ABS gum plastic may be a graft copolymer or a physical blend type or a combination of the two. The graft copolymer may be obtained by graft polymerizing styrene and aorylonitrile on a polybutadiene or a butadienestyrene oopolymer rubber spine. The physical blend type may be a mixture of butadieneacrylonitrile rubber with separately prepared styrene-acrylonitrile resin. In the examples the polysulphone used in the compositions has the recurring unit of the formula and the ABS used is a blend of a graft copolymer of styrene and acrylonitrile on a poly(butadieneco-styrene) rubber spine, and a separately prepared α-methyl styrene-acrylonitrile resin.
Patent GB-256319-A (GB)
Title: Improvements in or relating to vacuum cleaners
IPC: A47L9/10
Filed: 1925-05-04
Abstract: 256,319. Schlander, L., and Janzer, C. May 4, 1925. Hook fastenings; clips, band.-An air-filter bag is secured to the top of a dust receiving vessel by a steel band, one end of which carries a lever 6<a>, Fig. 2, connected by a spring 6e with ears 6<d> on the other end. The vessel is secured to the flanged platform of a tripod stand by pivoted latches 13, Fig. 3, carried by levers 14 on the stand and engaging lugs 12 on the vessel.
Patent GB-855018-A (GB)
Title: Improvements in or relating to displacement transducers
Inventor: FLECK WILLIAM
IPC: G08C19/06
Filed: 1958-04-11
Abstract: 855,018. Displacement transducers. SHORT BROS. & HARLAND Ltd. April 1, 1959 [April 11, 1958], No. 11609/58. Class 40 (1). A displacement transducer comprises a differential transformer provided with two subsidiary magnetic flux paths of adjustable reluctance in order that the flux in the main flux paths of the transducer may be varied to provide zero setting or sensitivity adjustment. Fig. 1 shows an E-type differential transformer provided with subsidiary flux paths O 1 , O 2 . Fig. 2a shows a modified armature to replace A in Fig. 1 to respond to rotational movement. Fig. 5 shows an alternative form of rotational transducer while Fig. 6 shows a further alternative form in which a core A of semicircular cross - section rotates inside coil SW between U-shaped cores carrying coils PW 1  and PW 2 . In these embodiments, Figs. 5 and 6, the primary winding is split and the secondary winding therefore has no induced E.M.F. when the transformer is in its balanced condition, in contrast to systems using a split secondary where equal E.M.F.'s are induced in the secondary winding which cancel out in the external circuitry and which therefore require components of a higher rating in the external circuit. Fig. 2 shows a differential transformer connected to a transistor demodulator circuit whereby a unidirectional output is derived from the A.C. input, reference voltages for the demodulator being derived from coils C 1 , D 1 , and C 2 , D 2 , wound on the same limbs as the primary winding PW 1  and PW 2 . Also described is a further alternative system of windings in which the primary winding is wound on the centre limb of an E-type transformer and the secondary is wound in 4 parts, each half of the winding having a section on each of the outer limbs of the core so that in balance the voltages induced cancel in the secondary winding rather than the external circuitry.
Patent GB-1415855-A (GB)
Title: Snap-action electric switches
IPC: H01H1/06
Filed: 1972-03-13
Abstract: 1415855 Retractive switches; contact arms BURGESS MICRO SWITCH CO Ltd 9 Feb 1973 [13 March 1972] 11633/72 Heading H1N A snap-action switch, Fig. 3, includes a movable contact arm 6, such as Fig. 1 or 2, which is pivoted at one end to an anchor terminal 4 and has a plurality of elements at its other end adapted for make or break with fixed contact members 22, 24 upon depression of an actuator button 20 which deflects a tension spring 12 to give a retractive changeover snap action. The elements at the free end of the arm may be formed by photographic etching and may be offset to opposed sides of the central plane of the arm by bowing, typically as Fig. 2, or bending (Fig. 5, not shown) and such offsets may be variously arranged including one (Fig. 6, not shown) in which the outward extent of the offset is greatest at the central element and reduces towards the side edges. The free ends of the fixed contacts co-operating with the multielements of the contact arm may also be shaped in a prescribed manner with the object of improving conductivity and lessening contact bounce e.g. by being bent down so as to provide edge engagement with the elements. In another embodiment (Fig. 4, not shown) the elements are coplanar with the contact arm and the associated fixed contacts have their ends pre-shaped, generally convex towards the arm, with partspherical, or V-shape sections.
Patent GB-115754-A (GB)
Title: Improvements in or relating to Apparatus for Closing or Covering Leaks or Fractures in the Hulls of Vessels.
Inventor: KOLESAR FRANK
IPC: B63B43/16
Filed: 1917-08-14
Abstract: 115,754. Kolesar, F. Aug. 14, 1917. Breach mats; rafts.-Breach mats are constructed of a number of parallel battens 1, Fig. 1, of wood arranged in contact and fitting into each other so as to form a flexible watertight mat. Preferably, a rounded bead is formed on one edge of each batten and fits into a corresponding depression on the adjacent batten, leaving a series of parallel grooves on the inner face of the mat, which allow the mat to be rolled up. The battens are strung together by means of ropes 3 passing through transverse holes in the battens, and to the ends of which are attached ropes 6, Fig. 3, adapted to be passed completely round the vessel and to be tightened by winches or by hand. Additional eyes 1<x> are provided on the edges of the mat for the attachment of additional securing-ropes. The inner face of the mat is lined with a preferably seamed blanket 7, which is prevented from moving relatively to the battens by the grooves 8<1> and by other grooves 8 cut in the battens parallel to the ropes 3. The mat is normally rolled up and carried on a drum 9, Fig. 7, mounted on a truck 12, which can, readily be wheeled to any part of the vessel. The truck carries a number of bars 14, 15 and a roller 16, which can be fitted together as shown in Fig. 8 to form a framework 13 adapted to project outboard, as shown in Fig. 3, to guide the mat. The drum 9 is built up of two sections 9<1>, 9<2> having undercut recesses 28, Fig. 9, into which is keyed a shaft 29 connecting the sections and forming the axle of the drum. By detaching the drum and lashing the sections 9<1>, 9<2> together with the mat and bars 14 to the truck, as shown in Fig. 9, the truck and mat can be employed as a raft, the hand-rails 31 being normally carried on hooks 32 on the edge of the truck. Battens may be arranged across the breach to form an initial support for the mat, the upper edge of the mat may be secured by additional bars pressed against the outer face of the mat by means of screw bolts, and the mat when in position may be covered by a tarpaulin.
Patent GB-811646-A (GB)
Title: Process for recovering -e-caprolactam from waste lyes of the -e-caprolactam production
Inventor: SCHAFFLER ALFRED
Filed: 1956-04-17
Abstract: e -Caprolactam is recovered from waste lyes of the e -caprolactam production by reducing the water content by at least 50 per cent and extracting the concentrated lyes by means of a solvent which is immiscible with water, distilling off approximately 90 per cent of the solvent from the extract, lixiviating the residue to remove the lactam and evaporating the aqueous solution thus obtained.  The crude lactam so produced can be further treated in a known manner to produce pure lactam.  The solvent recovered in distilling off the extract and washing the evaporation residue is returned direct to the process which is carried out in a continuous manner. Trichlorethylene is a suitable solvent for the continuous process. In a method of operation shown diagrammatically, waste lye is forced continuously by a centrifugal pump into a circulation evaporator heated with steam at 16 atm. abs. and thereby concentrated to 50 to 60 per cent, and the thickened lye is passed to a sediment container wherein ammonium sulphate is precipitated.  A reciprocating pump conveys the lye via a Grafe meter to a mixing pump where the emulsification and extraction are carried out with trichloroethylene in a proportion of 1 : 4.  The mixture passes through a cooler to a separator where the residual lye is separated from the trichloroethylene-lactam extract.  The extract flows via a syphon into a settling tower to separate residual lye and then enters a cascade evaporator wherein 90 per cent of the trichloroethylene is evaporated.  The condensed solvent is returned by a centrifugal pump to the mixing pump.  The residue from the evaporator is passed to the top of a washing tower and the lactam contained therein dissolves in the condensate water flowing up the tower and passes out at the head of the tower as a 35 per cent aqueous solution.  The remaining 10 per cent of trichloroethylene is recovered from the foot of the washing tower and pumped back to the settling tower.  The aqueous lactam solution is passed into a device where it is heated with steam at 3 atm. abs. to expel the water and yield a crude lactam.  The latter is worked up into pure lactam by distillation in vacuum with the addition of acid or alkaline refining agents, e.g. sodium hydroxide. A detailed example is described.
Patent GB-173202-A (GB)
Title: A process and apparatus for packing sugar and the like
IPC: C13B45/02
Filed: 1921-04-25
Abstract: 173,202. Soc. Anon. Raffinerie Tirlemontoise. Dec. 22, 1920, [Convention date]. Packeting sugar &c. in receptacles.-Relates to a process and apparatus for packing sugar or similar material in the form of plates, rods, or cubes. The sugar &c. is pushed, in layers, into a container open above and below and having elastic walls, from which they are fed into boxes &c. A frame 4 is disposed on an extension 2 of the cutting table and carries containers 7 formed of elastic material 8. One wall 8<a> only may be elastic as shown in Fig. 7, or the walls may press only on the lowest layer of the sugar as shown in Fig. 9. In another form, the walls may be spring-urged. Below the containers is arranged a lifting and lowering'device comprising a table 10 supported on rods 9. The rods 9 are supported by pawls 14 adapted to be disengaged by a lever 15. The table may be raised by a belt 12. A frame 16 is placed on the table 10 and carries cartons, boxes, &c. 24 between the partitions 18 so as to register with and partly surround the containers 7 on the table being raised. Ledges 85 ensure registration. A movable frame 3 is then advanced to move the sugar &c. over the containers 7 and a block 20 on a lever 22 pivoted at 23 is moved into the position shown in Fig. 2 to force the sugar &c. through the container 7 into the boxes 24. The process is repeated until the boxes are filled. The block 20 is guided by the engagement of a bar 28 between guides 29. 29<a>, and is counterweighted at 27. A guide-plate 30 deflects the disintegrated sugar through a funnel 32 into a box 33.
Patent GB-795792-A (GB)
Title: Improvements in or relating to the treatment of arsenical and sulpho-arsenical ores
IPC: C22B3/00
Filed: 1956-04-18
Abstract: An arsenical or sulpho-arsenical ore and a calcined arsenical or sulpho-arsenical ore are treated successively in that order or simultaneously in an aqueous medium with chlorine whereby metals are solubilized as chlorides and arsenic is oxidized to arsenic acid. The quantity of calcined ore is such that the oxidized elements dissolve in the acid present in the aqueous medium (primarily as a result of hydrochloric acid formation in situ). In the exemplified embodiment, an ore containing cobalt, nickel, iron and gold in addition to arsenic was mixed with ferrous sulphate (to provide an Fe/As ratio of about 1 for the precipitation of arsenic as ferric arsenate at a later stage) and suspended in water and chlorine passed in at such a rate as to provide a temperature not above 80 DEG  C. to avoid arsenic trichloride formation.  The redox potential was maintained at 600 mV. as measured by platinum saturated calomel electrodes. Thereafter calcined ore was added and the temperature raised to 90-95 DEG  C. with addition of chlorine to establish and maintain the same redox potential.  Finally the gold was solubilized, ferric arsenate precipitated by reducing the pH and gold separated from the solution by absorption on active carbon, by the latter part of the procedure described in Specification 795,790.  The Fe/As ratio can alternatively be adjusted during or at the end of the chlorine treatment: in this case a ferric salt, e.g. ferric chloride, is added.  Specification 795,791 also is referred to.
Patent GB-399120-A (GB)
Title: Improvements relating to driving mechanism for belt conveyors
IPC: B65G23/34
Filed: 1933-04-24
Abstract: 399,120. Endless-belt conveyers. ANDERSON, A. and ANDERSON, BOYES, & CO., Ltd., Motherwell, Lanarkshire. April 24, 1933, No. 11876. [Class 78 (i).] The driving drum 1, Fig. 2, is embraced by a sleeve consisting of a series of co-axial beltengaging rings 5 composed of friction material such as rubber and formed with studs 6 which are so arranged that air tending to be trapped between the belt and the sleeve in the passage of the belt over the drum may escape through the gaps between the studs. The rings are retained in position by discs 7 united by bolts 8. The belt 10, Fig. 1, is nipped between the drum and a spring-urged jockey-roller 9 which is driven by gears 11 .. 14 so arranged that the peripheral speed of the roller is substantially identical with that of the drum.
Patent GB-1439729-A (GB)
Title: Ac contactor
IPC: H01H50/16
Filed: 1974-03-18
Abstract: 1439729 Electromagnetic contactors SPRECHER & SCHUH AG 18 March 1974 [3 July 1973] 11909/74 Heading H1N The magnetic circuit parts of an electromagnetic contactor comprise an E-shaped armature 9 and an E-shaped yoke and core member 2 with shading rings 18 on the outer limbs of the armature 9 for movement therewith and the pole faces of the armature 9 and member 2 engage only in regions 8, 13 surrounded by the shading rings. The gap 16 between the centre limbs 3, 10 is larger than the gaps 21 between the parts of the outer limbs which are not surrounded by the shading rings. Each "ring" is in the form of a stylized figure eight with its centre part in a shallow groove in the armature face and extending into groove 6 in the member 2. The grooves 6 are dimensioned to ensure that the ring part extending therein does not engage the member 2.
Patent GB-1372509-A (GB)
Title: Device for simulating the original shape of a distorted signal
IPC: A61B5/026
Filed: 1973-03-13
Abstract: 1372509 Measuring areas under peaks PHILIPS ELECTRONIC and ASSOCIATED INDUSTRIES Ltd 13 March 1973 [16 March 1972] 11971/73 Heading G1U [Also in Division G4] A device simulates an input signal which consists of a peak followed by a distorted exponential decay, e.g. of the type obtained in determining the heart minute volume by injecting an indicator and obtaining a dilution curve, the simulation consisting of forming an output signal by combining the initial peak of the input signal with an undistorted exponentially decaying signal generated in the device and having the appropriate initial magnitude and time constant. In Fig,1, the input signal is applied at 1 and is initially connected through switch 5 to an output 3 and hence, e.g. to an integrator 75. The input signal is also periodically applied through switching circuit 17 to capacitor 11 which is in an RC circuit of a signal generator 9. The voltage on capacitor 11 is amplified twice by amplifier 19 and compared with the input signal by differential amplifier 27 whose output is reversed in sign and integrated at 45. The output of integrator 45 is taken to terminal 15 of the signal generator whose time constant is thereby adjusted. When the peak of the input signal is reached the output of amplifier 27 will be zero. When this point is reached switches 5, 71, 73, 74 change their positions automatically or manually. Capacitor 11 discharges since switch 73 is open and the switch 5 in its new position connects the output of amplifier 19 to the output 3. Switch 74 earths the input of integrator 45 and the time constant of signal generator 19 is therefore held constant. Switch 71 opens and a capacitor 67 therefore holds the input voltage at the time the switch opens. This voltage is compared in 63 with the output of amplifier 19. It is shown that when these two inputs of 63 are equal the integration operation in 75 should cease to give the correct result and a relay 69 is therefore provided to earth output 3 when this condition is realised.
Patent GB-1507607-A (GB)
Title: Aerial atomiser
IPC: B64D1/18
Filed: 1977-03-08
Abstract: 1507607 Crop spraying from aircraft CIBA - GEIGY AG 8 March 1977 [25 March 1976] 11975/76 Heading AID [Also in Division B2] An atomizer for mounting on an aircraft for the aerial spraying of crops comprises two aerofoils 10, 12 positioned to provide a Venturi between them and, positioned between the aerofoils, a feed tube 14 having mounted thereon a plurality of nozzles for forming a thin sheet of liquid in the plane of the Venturi, said liquid being atomised by high velocity air moving through the Venturi on both sides of the liquid sheet. The aerofoils are adjustably mounted on end plates (18, 20) Fig. 5 (not shown) so that the Venturi geometry may be altered to control the droplet size. The feed tube 14, Fig. 4, is aerodynamically shaped and the nozzles 16 have flattened tips to produce fan-shaped jets of liquid; both the feed tube and the nozzles may be made from brass tubing. The spacing of the nozzles increases towards the ends of the tube. In a modification, Fig. 6 (not shown), a further aerofoil (23) is mounted between the aerofoils 10, 12 providing a double Venturi with a set of nozzles positioned between each adjacent pair of aerofoils.
Patent GB-839018-A (GB)
Title: An improved monorail rail track unit
IPC: B61B13/04
Filed: 1957-04-12
Abstract: 839,018. Monorail rails. ROAD MACHINES (DRAYTON) Ltd., and ROBB, W. M. April 8, 1958 [April 12, 1957], No. 11976/57. Class 104(2). A monorail rail track comprises a cylindrical head 5 secured to a channel section foot 6 by one or more box-like web plates 7, 8, assemblies. The web plates 7 are welded to the solid head 5 and to the web 6a of inverted channel member 6. Transverse triangular end-plates 8 are welded to the end-plates 7, the head 5 and channel 6. The web plate assemblies 5 may be supplemented by vertically and longitudinally extending web plates 9 welded to the head 5 and the channel member 6. The track sections are provided with plugs 10 and sockets for interconnection with other monorail track assemblies. A vehicle stop is mounted in a hole 9a in the web 9. The channel member 6 may be mounted with its side walls facing upwardly. Specification 720,680 is referred to.
Patent GB-129820-A (GB)
Title: Improvements in and relating to Magneto Operating Mechanism.
IPC: F02P1/00
Filed: 1918-07-23
Abstract: 129,820. Marks, E. C. R., (Splitdorf Electrical Co.). July 23, 1918. Magnetos, driving.-A magneto is oscillated by hand to produce sparks for starting an engine through mechanism which serves also for the ignition during normal running of the engine. Disks 3, 4 are secured to the ends of the magneto and engine shafts 1, 2 respectively, and are connected together by a spring 20 fitting into notches 21, 22. Gear-wheels 5, 6 are loosely mounted on the shaft 2; the wheel 5 meshes with a pinion 7 on a countershaft 10 provided with a starting-handle 19, and the gear-wheel 6 meshes with a pinion 11 carried by a short shaft 12, at the opposite end of which is secured a disk 13. Crank-pins 14, 16 on the disks 13, 3 respectively are connected by a link 15. A locking-dog 17 sliding in a stationary bracket is adapted to engage in one of the notches 8a of a wheel 8 on the shaft 10; the dog may be held in raised position by a plate 18. When the engine is running normally and the dog 17 is withdrawn as shown, the link 15 takes a position so that the crankpin 14 is in line with the shaft 12 and the pin 16, the magneto and engine shafts 1, 2 then rotating together.
Patent GB-389667-A (GB)
Title: Improvements in or relating to suction cleaners
IPC: A47L5/30
Filed: 1932-04-27
Abstract: 389,667. Vacuum cleaners. HOOVER, Ltd., Perivale, Greenford, Middlesex.- (Hoover Co. ; North Canton, Ohio, U.S.A.) April 27, 1932, No. 12064. [Class 8 (i).] The interior of the tunnel 7 of a vacuum cleaner is supplied with air at atmospheric pressure. The edges 8 of the orifice in this tunnel are mounted in approximately the same plane as the lips 6 of the suction orifice, air thus being drawn from the tunnel 7, through the carpet and into the suction orifice 9. In a modification air at a pressure above that of the atmosphere is supplied, the rotary brush being provided with internal vanes to act as a fan. In a further modification, Fig. 8, the rotary brush member is mounted adjacent to the air supply tunnel 7.