baber/WOPTO huggingface dataset:
Patent GB-851057-A (GB)
Title: Improvements in or relating to the solvent extraction of olefines from hydrocarbon mixtures
IPC: C07C7/10
Filed: 1957-03-20
Abstract: In a process for the solvent extraction of olefines from mixtures with saturated hydrocarbons employing an aqueous ammoniacal solution of cuprous ions as solvent in a countercurrent extraction system, the hydrocarbon mixture is introduced at an intermediate point and the solvent leaving that point is contacted countercurrently with a raffinate hydrocarbon stream containing the olefine to be separated and rejected from the final stage in the direction of solvent flow and a portion of the hydrocarbon phase free of solvent is withdrawn from a settler past the point of introduction of the hydrocarbon mixture or from a line leading from such settler to the previous mixer in the direction of solvent flow and the withdrawn hydrocarbon is separated into a lighter fraction containing the desired olefine which is returned to the system and a less volatile fraction which p is rejected.  The removal of the non-volatile hydrocarbons reduces the problem of entrainment.  The process is of especial use in the extraction of butadiene-1,3 from a mixture of C4 hydrocarbons. Suitable cuprous salts are the sulphate, phosphate, lactate, tartrate, borate, carbonate, chloride, fluoride, glycollate, thioglycollate, benzoate and salicylate but the acetate is preferred, particularly in aqueous-ethanol or -methanol solutions.  The non-volatile materials are preferably separated by flash or fractional distillation, but the use of adsorption on charcoal is also referred to.
Patent GB-734085-A (GB)
Title: Improvements in or relating to degreasing plants
IPC: C23G3/00
Filed: 1952-04-10
Abstract: 734,085. intercepting tanks; traps. SUTCLIFFE, F. M. June 29, 1953 [April 10, 1952], No. 9167/52. Class 33. In a degreasing'plant comprising a separating tank having a plurality of vertical baffle plates forming a sinuous passage for the removal of scum, a collecting channel is provided in the separating tank to receive grease and degreasing liquid from the degreasing tank, the channel having an outlet into the separating tank. As shown, a degreasing plant, shown in plan view, comprises a degreasing tank 8 from which liquid passes into a channel-shaped cover 20 which opens into the tank 8 along its whole length and discharges liquid from an opening in its lower wall extending from the rear wall of a separating tank 11 as far as the baffle plate 14. Further baffles 15 and 16 allow scum to separate out and be carried over a weir into the outlet channel 24, while the cleaning liquid is recirculated to the tank 8 by a pump through a pipe 12. An electric heater 26 is provided in the degreasing tank, and rinse tanks 9 and 10 are provided for cleaned articles.
Patent GB-1471643-A (GB)
Title: Sludge pump
IPC: F04B9/117
Filed: 1975-03-05
Abstract: 1471643 Reciprocating pumps N SEILER and H P SEILER 5 March 1975 [18 March 1974] 9208/75 Heading FIA [Also in Division F2] A pump for feeding sludge to an incinerator comprises one or more cylinders 18 communicating with a supply chamber 1 through which the or each piston 42 moves from the rearward position shown to a forward position, a cutting edge 55 on the piston co-operating with a knife edge 19 on the cylinder during forward movement, and the or each cylinder having a delivery valve 21 comprising a slide member 25 with a knife edge 29, the slide member 25 and piston 42 being reciprocated by respective double-acting, hydraulic rams 34, 13. Cylinder 18 may be of hard steel and may have an extension 181 for guiding the piston. Piston 42 is removably secured to rod 39 by a bolt (43), Fig. 1 (not shown) In Fig. 3 (not shown), two pistons are operated alternatively, one piston moving from a mid position to its forward end position, while the other moves from its forward position to its rearward position and back to its mid position, under the control of multi-way valves in an  hydraulic circuit, Fig. 6 (not shown). Valve 21 includes a guide-plate 24 for slide member 25, and apertured plates 23, 26, plate 26 having a cut-away portion (37), Fig. 4a (not shown) for receiving material displaced by member 25. The incinerator end of delivery conduit 22 may be formed as a burner nozzle.
Patent GB-540804-A (GB)
Title: A constant impedance load device, particularly for modulating systems
IPC: H03H5/00
Filed: 1940-05-24
Abstract: 540,804. Equalizing load on generators. MARCONI'S WIRELESS & TELEGRAPH CO., Ltd. May 24, 1940, No. 9216. Convention date, May 24, 1939. [Class 38 (iv)] [Also in Group XL] A constant impedance load device, particularly for use as a radio modulator, comprises two fixed impedances 13, 15 Fig. 3, either or both of which may be a transmitting aerial, and two variable impedances 17, 19 e.g. modulating valves, which are so varied that their geometric mean remains constant and equal to the geometric mean of the fixed impedance. In Fig. 4 the two fixed impedances Ro are equal and one of the variable impedances R3 is connected through an impedance invertor comprising a quarter-wave line 27 of characteristic impedance Ro. Under these conditions the impedance R4<SP>1</SP> presented by the line 27 is equal to R0<SP>2</SP>/R3 and the geometric mean of the variable impedance is Ro. The load presented by the assemblage across the terminafs 9, 11 is also Ro and is constant. Each variable impedance may comprise a pair of valves in series, with their cathodes connected and their grids excited in the same phase by a source of modulating voltage (Fig. 8 not shown). In an alternative arrangement the assemblage comprises a series arrangement of two fixed impedances each shunted by a variably impedance (Figs. 2 and 5 not shown). In Fig. 7, the source is connected to terminals 9, 11 across which are connected two quarter-wave lines 33, 35 each terminated by a fixed impedance Ro. One of the impedances Ro is shunted directly by a variable impedance R3, and the other by a further quarter-wave line 27 terminated by a variable impedance R3. The fixed resistances 13, 15 of Fig. 3 may comprise two antenna systems with different radiation patterns. Specifications 522,976 and 524,416, [both in Group XL], are referred to.
Patent GB-758446-A (GB)
Title: The preparation of substituted propanediols
IPC: C07D263/16
Filed: 1953-04-02
Abstract: Threo-diols of formula <FORM:0758446/IV(a)/1> where R1 is a lower aliphatic acyl radicle optionally halogen-substituted are made by treating an erythro-nitrophenylserine ester of formula <FORM:0758446/IV(a)/2> where R is a lower alkyl radicle, with an acylamino ether, optionally halogen-substituted, when R11 is H or with thionyl chloride or concentrated sulphuric acid when R11 is a lower aliphatic acyl radicle, optionally halogensubstituted, to form an oxazoline ester of formula <FORM:0758446/IV(a)/3> where R2 is a lower alkyl radicle which may be halogen-substituted, selectively reducing the latter to an oxazoline-alcohol of formula <FORM:0758446/IV(a)/4> hydrolysing the latter with dilute mineral acid in the cold or at room temperature and making the solution alkaline, or boiling the oxazoline-alcohol with dilute hydrochloric acid, precipitating the product by making the solution alkaline and N-acylating as in Specification 718,580.  The term "lower" relates to groups containing 1 to 6 C atoms.  Selective reduction may be effected with LiAlH4 or Mg(AlH4)2.  The products are antibiotics.  In examples: (1) L(-)-erythro-p-nitrophenylserine ethyl ester, cf. Specification 715,876, is treated with an aqueous-ether suspension of dichloroacetimino ethyl ether hydrochloride at room temperature to yield the oxazoline which is reduced with LiAlH4 in ether solution, the resultant alcohol isolated, treated with dilute hydrochloric acid and the products made alkaline with ammonia and D(-) - threo - 1 - p - nitrophenyl - 2 - dichloracetamino-1,3-propandiol separated; (2) the oxazoline-alcohol of (1) is boiled with dilute hydrochloric acid to yield the hydrochloride of D(-) - threo - p - nitrophenyl - 2 - amino-1,3-propandiol from which the free base may be liberated, and acylated by heating with dichloroacetamide or by standing with the latter in anhydrous ethanol; (3) L(-)-erythro-N-dichroacetyl - p - nitrophenyl - serine ethyl ester is stirred with concentrated sulphuric acid and the oxazoline thus obtained further treated as in (1) to yield chloramphenicol using Mg(AlH4)2 in the reduction step; (4) L(-) - erythro - N - acetyl - p - nitrophenylserine ethyl ester is heated with thionyl chloride and the oxazoline thus obtained is converted into chloramphenicol as in (2) and in (5) DL-2 - dichloromethyl - 4 - carbethoxy - 5 - pnitrophenyl-oxazoline obtained from DL-erythro-p-nitrophenylserine ethyl ester by the process of (1) is treated in anhydrous ether with Mg(AlH4)2 and the oxazoline-alcohol so obtained is converted as in (1) to racemic chloramphenicol.  Specifications 652,273, 698,542, 698,544, 716,426 and 728,704 also are referred to.
Patent GB-927919-A (GB)
Title: Improvements in paper bags
Inventor: FRANSON OTTO ELWING
IPC: B65D33/00
Filed: 1961-03-14
Abstract: 927,919. Paper bags. MUNKSJO A.B. March 14, 1961, No. 9262/61. Class 94(2). [Also in Group I] A gusset type bag has aligned holes 14, 15 16, in its side walls 11 and front and rear walls 12, 13, the side wall holes 14 having slots or apertures 17 extending to, or towards, the bag opening 18. The holes 14 - - 16 permit the bag to be supported on a holder 1 having support wires 3. The front and rear walls are pushed apart until engaged in recesses 9, 6, in the wires 3, Fig. 2, the slots 17 permitting the downward movement of the bag into these recesses. The mouth of the bag is then held open by the vertical portions 5, 8, of the wires. A support 2 for the bag bottoms is attached to the holder 1 which may be fixed by screws 4 to a cupboard door.
Patent GB-1393111-A (GB)
Title: Fluid pressure transducers
IPC: G01D5/12
Filed: 1971-04-13
Abstract: 1393111 Measuring fluid-pressure electrically JOSEPH LUCAS (INDUSTRIES) Ltd 10 April 1972 [13 April 1971] 9269/71 Heading GIN [Also in Division H3] A transducer for measuring fluid-pressure comprises a resilient ferromagnetic tube 15 Fig.1 made to vibrate in a bell-like manner by a combination of windings on inner and outer stator rings 27, 26 and a series of radially located permanent magnets 14, the natural frequency of vibration being indicative of the pressure inside the tube 15. An insulating collar 29 surrounding tube 15 has a number of conductive surface areas forming displacement measuring capacitors in association with tube 15, and the varying capacitance signals are grouped in a 3-phase sense and amplified to feed the windings on cores 26, 27 with phase-displaced voltages which cause vibrations at the resonant frequency of the tube 15 to travel round the tube. The frequency is measured by means not shown and is linearly related to the fluid-pressure inside the tube 15.
Patent GB-236669-A (GB)
Title: Improvements in or relating to rotary scouring wheels or rolls
IPC: B24D9/04
Filed: 1924-04-14
Abstract: 236,669. British United Shoe Machinery Co., Ltd., (United Shoe Machinery Corporation). April 14, 1924. Wheels.-A rotary scouring or finishing wheel or roll comprises a two-part body 32 with a hinge 34 mounted on supports comprising flanges 12, 14 and hubs 16, 18 which are adjustably secured to a shaft 10 by screws 20. The flanges have therein closed slots comprising cam portions 24 and portions 26, 28 concentric with the hinge 34, and engaging the slots are pins 38, 40 carried by the parts of the body; upon relative rotation of the body and the supports, the slots serve either to close or to open the body, abrasive material being retained thereon by spikes 36. The hubs have engaging shoulders 22, so that upon axial movement of a support to accommodate a body of different width, the relative circumferential disposition of the flanges is not disturbed. Specification 156,885 is referred to.
Patent GB-177708-A (GB)
Title: Improvements in speed regulating systems for electric motors
IPC: H02P7/06
Filed: 1921-03-30
Abstract: 177,708. British Thomson - Houston Co., Ltd., (General Electric Co.). March 30, 1921. Constant speed control systems.-The speed of a motor 2 is maintained constant by automatically including in and excluding from a field winding 4 a resistance 7 under the control of a vibrating regulator 9 acting through a relay 17, one winding 12 of the vibratory regulator being connected across a resistance in the exciter circuit, and the other winding 13 being energized by a small generator 15 mechanically coupled to the motor. Different speed settings, without interference with the adjustments of the regulator, are obtained by a variable resistance 23 in circuit with the generator 15 and the coil 13, and a variable resistance 6 in a branch of the exciter circuit. The branch circuit may, as shown, contain an additional field winding 3, or the additional winding may be dispensed with. A common operating- member 24 preferably unites the two variable resistances, so that they vary in proportion.
Patent GB-331214-A (GB)
Title: Improvements in the manufacture of opaque films
Filed: 1929-03-25
Abstract: 331,214. Non-Inflammable Film Co., Ltd., and Phillips, D., J. P. March 25, 1929. Processes for making films from solutions of cellulose esters and ethers and other cellulose solutions.-Opaque films are made by superposing two films one of which contains finely divided metallic powder while the other contains an ordinary filler or opaque colourng matter, the quantities of fillers being moderate so as not to impair the tenacity of the film. Solutions of regenerated cellulose or cellulose esters or ethers in volatile solvents are poured or cast one on top of the other so as to form a double film. The quantities of metal and other filler are such that each layer of the film is of itself transparent, but the film as a whole is opaque. In an example, one part of cellulose acetate is dissolved in acetone and one to one-and-a-half parts of gold or aluminium powder is added. The solution is spread to form a film and when dry a second film is spread on top. The second film is obtained from a solution consisting of one part of cellulose acetate dissolved in acetone and mixed with a half to one part of zinc oxide.
Patent GB-607922-A (GB)
Title: Improvements in lighting fittings
IPC: F21V8/00
Filed: 1946-03-28
Abstract: 607,922. Lighting fittings. ERALITE MANUFACTURING CO., Ltd., and WRAY, E. J. March 28, 1946, No. 9626. [Classes 75(ii), 75(iii) and 75(iv)] [Also in Group XVIII] A lighting fitting comprises a tapered transparent body moulded, bent or formed to a C-shape and having its external surface highly polished to confine light rays within its body, the exit end being formed so as to allow light to emerge. The fitting shown comprises a C-shaped block 1 of solid glass, plastic or other transparent material with an outwardly flared end 6, this block 1 being mounted on a lamp containing support 3, Fig. 1, to form a table lamp, or mounted on a member 10, Fig. 4, adapted to be attached to a wall or to a pendant or to the back of a bed 12 by means of a clip 11. The light from the lamp 16, Fig. 6, may enter the end of the block 1 directly or through the side 14, 'as shown, in which case the end 15 is polished to reflect the light through the block, and the exit end may be of lenticular formation, faceted, given a matt finish by sandblasting, or be partly polished and partly matt so as to give any desired illuminated design or pattern.
Patent GB-417187-A (GB)
Title: Improvements in or relating to devices for applying emollient oils, lotions or the like to the hands or feet
IPC: A61M35/00
Filed: 1933-03-30
Abstract: 417,187. Hand and foot coverings. KUROWSKI, J. B. DE, 11, West Cromwell Road, Earl's Court, London. March 30, 1933, No. 9645. [Class 141.] Devices for applying skin-treating substances to the hands or feet consist of a flexible impervious envelope 1, 2, 9 of sheet rubber, designed to fit loosely over the hand or foot and lined with resilient sponge rubber in which the treating is absorbed. The lining 2 is corrugated and the device is attached to the limb by a contracted portion 3 of the envelope 1 and a laced wrist or ankle band 4.
Patent GB-702283-A (GB)
Title: Improvements relating to lubricators
Inventor: BINNEY ERIC ALTON
IPC: F16N11/04
Filed: 1951-04-25
Abstract: 702,283. Delivering measured quantities of liquid. ENGLISH ELECTRIC CO., Ltd. April 18, 1952 [April 25, 1951], No. 9645/51. Class 106(5) [Also in Group XXXIV] A device for delivering a predetermined amount of lubricant from a source under pressure comprises a cylinder 10 with an inlet 18 at one end and an outlet 22 at the other end, a piston 15 slidable in the cylinder and biased towards the inlet by means such as, for example a spring 16, a two-position valve 12 being provided so. that in one position of the valves lubricant is admitted to the cylinder to press the piston against the spring 16 and in the other position the supply of lubricant is cut off and a connection is made from the inlet end of the cylinder to the outlet end through a fixed tube 14 extending through the piston, whereby the piston, under the influence of the spring transfers the lubricant from the inlet end to the outlet end of the cylinder. The tube 14 communicates with the lower end of the cylinder by way of a port 20 and a 'recess 12b in the valve 12, when the valve is in the position shown'in Fig. 1. The piston 15 is provided with a rod 23 extending into a tube 24 formed with slots 26. 27. The rod has an adjustable indicator disc 25 which is visible through the slots when the piston 15 is in the uppermost and lowermost positions. The downward movement of the piston may be limited by an adjustable screw stop 28 or by a' rod adjustable axially by means of a rotatable cam.
Patent GB-632989-A (GB)
Title: Rotary tool holders
IPC: A61C1/14
Filed: 1946-03-28
Abstract: 632,989. Dental handpieces. SCHOLL MANUFACTURING CO., Ltd., SAGMA, Ltd., and ARMSTRONG, J. March 28, 1946, No. 9655. [Class 81(ii)] [Also in Group XXII] In a rotary tool holder wherein a tool is held in a chuck 9, the latter is opened and closed on the tool by means of a longitudinally movable round spindle 11 of varying diameter surrounded by one or more yielding members located between two co-operating surfaces 2, 3, one of which is connected to the chuck spindle 5 surrounding the chuck operating mechanism and the other is formed in a plunger 6 which slides axially in the chuck spindle in accordance with the position of the yielding members due to longitudinal movement of the round spindle 11. The yielding members are constituted by a ring of balls 1, and the spindle 11 is connected to a driving shaft 13 by a pin 12. Rotary movement of the spindle is imparted to the chuck by means of a projection 20 engaging a slot 21 in the plunger 6, the outer surface of which has a projection 22 engaging a slot 23 in the chuck spindle 5.
Patent GB-492814-A (GB)
Title: Improved packing rings for towers, reaction vessels, absorption chambers and the like
IPC: B01J19/30
Filed: 1937-04-05
Abstract: 492,814. Treating gases with liquids. SINGER, F. April 5, 1937, No. 9668. [Class 55 (ii)] A packing-ring 1 is provided with a partition 2 which is twisted through 90 or 180‹ within the length of the cylinder and is cupped at either end 3. Two or more twisted partitions may be used ; or a cylindrical partition within the ring may be provided with radiating twisted webs. The rings may be made by pressing of stoneware dust, or of metal, or by extrusion with a rotating nozzle or table.
Patent GB-1030709-A (GB)
Title: Robot toy
IPC: A63H11/10
Filed: 1963-03-12
Abstract: 1,030,709. Mechanical figure. LOUIS MARX & CO. Ltd. March 12, 1963 [March 12, 1962), No. 9750/63. Heading A6S. A human or other figure has arms 18, 20 which are pivotally mounted for movement towards and away from each other to seize or release an object and driven by a reversible motor 48 through reduction gearing 162, 170, 172, 174, a double crank 144 with opposed levers 146,148, and connecting links 150,152 between said levers and said arms. The gear 170 is a worm drive engaging wheel 172 for the purpose of preventing unwinding when the motor is switched off so that an article gripped by the arms is not inadvertently released. An element of lost motion is provided between wheels 164,166 whereby the motor is able to get up speed instantly when the arms are being moved to a releasing position. A similar reversible motor 42 and gearing is used for moving the figure backwards and forwards on wheels concealed by a screen 12 representing feet. The figure also bends from the waist on a pivot rod 46 under the control of a similar motor 44 and gearing. The figure is controlled by a remote control unit 26 which includes a steering wheel 30 to control the direction of forward wheels 70.
Patent GB-107771-A (GB)
Title: Seaming Machine for Circular and Noncircular Boxes.
IPC: B21D51/32
Filed: 1917-07-05
Abstract: 107,771. Knudsen & Co., G. July 5, 1916, [Convention date]. Seaming.-The rollers of a can-seaming machine are pressed against the work by springs or centrifugal force or both so that the machine may be used for any shape of can without the use of a pattern cam to guide the seaming rollers. The roughing and finishing rollers 5, Fig. 4, are carried on the usual rotating wheel 1 by slides 3 which move in unison with slides 13 by reason of levers 9 engaging projections on both. The slides 13 are drawn by springs 18 towards slides 14 which are moved, to bring the rollers 5 into action, by levers 31, 32 successively engaging the lower and upper arms 36 of gears 24 which mesh with racks 19 on the slides 14. Each slide is held by a spring pawl 25 engaging a notch 28 as shown in the right half of Fig. 4 until released by the end 37, Fig. 1, of the lever 30 which also engages the arm 22, Fig. 4, and returns the rack &c. to their original positions. The arms 30, 31, 32 are moved into the path of the arms by cams 56, Fig. 1, carried by a toothed wheel 80 which is rotated intermittently and held by a pawl 45 and stop 48 actuated from an eccentric 39 on the wheel 1. The pawl 45 is held normally out of action by a bar 52 which is raised by a spring 60 and has a bowl 55 in a recess 57 bf the cam disks 56. When the pedal 67 is depressed, an unseamed can placed by hand on the spring table 74 is pressed against the fixed pad 34 and the bar 52 is moved down releasing the pawl 45 and withdrawing the bowl 55 which rests on the cam until the recess comes round, when the operation is stopped and the finished' can released.
Patent GB-555397-A (GB)
Title: Improvements in clockwork escapements
IPC: G04B15/02
Filed: 1942-07-16
Abstract: 555,397. Clocks. MEFINA SOC. ANON. July 16, 1942, No. 9898. Convention date, July 26, 1941. [Class 139] A clockwork escapement, more particularly for use in a time-fuze for a projectile, comprises two interengaging toothed wheels 10, 11 mounted on spindles arranged parallel to the arbor of the balance wheel 13, and a cylindrical member 12 on the arbor formed with a recess for alternate co-operation with the teeth of the two wheels to impart impulses to the arbor during the oscillations of the balance wheel under control of the hair spring 14. At least one of the wheels is driven by a spring, or weight or othe source of power each wheel being checked in turn by the surface of the cylindrical member.
Patent GB-142999-A (GB)
Title: Improvements in holders for the burning of candles
IPC: F21V35/00
Filed: 1919-04-22
Abstract: 142,999. Guest, H. A. T. April 22,1919. Candle-holders.-In a candle-holder such as is described in Specifications 134,475 and 134,583, in which the candle rests on the top of a plug i and is enclosed in a tube j sliding on the plug i, the upper end of the tube carries a perforated tapered socket d and a grease-cup c. Airholes m may be provided in the tube j, in order to keep the walls of the socket cool until the holes are closed by the descent of the tube over the plug. An external tube n secured to the candle-holder base l preferably surrounds the tube j.