baber/WOPTO huggingface dataset:
Patent GB-729227-A (GB)
Title: Improvements in or relating to a continuous process for the manufacture of benzene hexachloride
IPC: C07C17/02
Filed: 1952-07-29
Abstract: Benzene hexachloride is prepared by a continuous process by the reaction of benzene and chlorine in actinic light, comprising introducing benzene and chlorine into a reaction zone, the benzene being in excess of the stoichiometric quantity, recycling a portion of the reacted mixture, the ratio of the recycled portion being above 4 : 1 by weight relative to the fresh chlorine and benzene feed, and recovering the remainder as product.  In a modification, the reaction is conducted in a first reaction zone to react between 70 and 95 per cent of the chlorine, a portion of the reacted mixture is recycled in a ratio of 4 to 20 times and more, preferably between 9 and 11 times the weight of the fresh reactant feed and the remaining part of the product is introduced into a second reaction zone to complete the reaction of the chlorine and the benzene.  The preferred reaction temperature is between 15 DEG  and 40 DEG  C. and is suitably about 30 DEG  C.  Apparatus for carrying out the invention is described. An example is given in which a mixture of chlorine and benzene with the latter in excess is passed into a first reaction zone where it is combined with recycled reaction product containing 14.6 per cent of benzene hexachloride, 1.1 per cent of chlorine and the remainder benzene, so that the composition of the material in the reaction zone is 13.2 per cent of benzene hexachloride, 2.0 per cent of benzene and the rest benzene.  A portion of the reaction product is withdrawn and passed to a second reactor, whilst the remainder is recycled through the first reaction zone.
Patent GB-992359-A (GB)
Title: Improvements in or relating to cross-linking of unsaturated copolymers
IPC: C08L9/00
Filed: 1963-05-14
Abstract: Copolymers which have been obtained by the copolymerization of one or more polyolefinically unsaturated C4- 14 compounds with one or more straight-chain C2- 10 mono-olefinic compounds are vulcanized by one or more phenol resins in the presence of one or more halides of one or more metals of Group II or III of the Mendel<\>aeeff Periodic Table or halides of a heavy metal (the metal having a specific gravity greater than 4) or a mixture of precursors for any such halides. The copolymer may be derived from cyclic, e.g. C5, polyolefinically unsaturated compounds and branched chain mono-olefines. The polyolefinic compound may be a diene and may contain a pair of conjugated double bonds, e.g. dicyclo-pentadiene and the copolymer may contain 0.5-10 mol. per cent of the diene. The mono-olefine may be ethylene or propylene.  The copolymer may contain up to 90 mol. per cent of the branched C4- 12 mono-olefine. 1-15% phenol resin may be used and the resin may be a condensation product of a phenol and a C1- 7 aldehyde; the resin may be a trifunctional phenol resin wherein two of the three positions, o-, o- and pto the phenol group are unsubstituted and the remaining position may be substituted with a C4-12 hydrocarbon radical.  The phenol resin may contain at least 85% of units of formula <FORM:0992359/C3/1> where R1 and R2 are H, C1- 3 alkyl or a furyl radical, R3 is a C1-12 hydrocarbon, chlorine, nitro or cyano and n is 2-8.  The resin may be prepared by condensing formaldehyde with n-tert.-butylphenol, p-octylphenol or p-isooctylphenol. The metal halide may be stannous chloride or iron chloride and the mixture of percursors for such halides may be diphenylbromomethane, N - bromo - succimimide, iron stearate and tin stearate.  Before vulcanization up to 50% of other copolymers, e.g. butyl rubber, may be admixed with the original copolymer. Fillers, e.g. carbon black, and stearic acid may be added to the copolymers prior to vulcanization.  Specifications 879,233, 880,756, 892,462, 912,975 and 921,511 are referred to.
Patent GB-1500705-A (GB)
Title: Circular magnetic domain devices
IPC: G11C19/08
Filed: 1974-05-02
Abstract: 1500705 Magnetic bubble switches PLESSEY CO Ltd 17 March 1975 [2 May 1974] 19205/74 Heading H3B Magnetic bubbles are switched from one track 6 to at least one of two others 8, 9 by the combined effect of at least three permeable elements 12-14 allowing bubble expansion and a magnetic field impulse generator, i.e. conductor 15, encompassing at least the central element or elements 13. Normally bubbles moving in direction 17 by a 100 kHz rotating field 16 expand over elements D-G then contract over element H along track 9 in direction 19. However, a 1 Ásec., 60 mA pulse applied to conductor 15 erases the central part of an expanded bubble to split it and cause the divided sections to propagate along tracks 8 and 9, whereas a 3 Ásec., 40 mA pulse before a bubble reaches element E diverts it along track 8. Alternatively the conductor 15 may annihilate bubbles. The switch shown may be combined with another rotated 180 degrees from that shown to allow transfer of bubbles between loops (Fig. 4, not shown), and the conductor 15 may have inverted extensions to one or both limbs to encircle the outer elements 12, 14. The bubbles are originally created by splitting off from a bubble captive to a permalloy disc.
Patent GB-663591-A (GB)
Title: A method of and means for trimming metal pressings preparatory to welding or other operation thereon
IPC: B23K7/00
Filed: 1949-07-22
Abstract: 663,591. Dividing by fusion. THOMPSON MOTOR PRESSINGS Ltd., J., and THOMAS, J. R. June 29, 1950 [July 22, 1949], No. 19290/49. Class 83 (iv). In trimming metal pressings, a pressing is held against a former to maintain its correct shape and a moving flame cutting torch, guided by a fixed template, operates upon its marginal edges. End pillars 16 supported by base channels 1, 1 carry a beam comprising channels 2, 2 to which are welded a lower plate 4 and an upper channel plate 3. Fluid pressure cylinders 11 are mounted on the channels 1, 1 so that the heads 13 of the rams 12 may engage the internal surface of the pressing 8 to press it against a shaped metal plate former 7 welded lengthwise of the plate 4 and provided with distortion-preventing fillets 9. Saddle members to fit over the external surface of the pressing 8 are fitted to the former 7 at spaced intervals. Flanges 5, 5 of the plate 3 form rail tracks for a motor-driven carriage 6 having brackets 19 vertically adjustable in guides 18 provided on a cross-member 17 by means of screws 20, each bracket 19 carrying at its lower end a bearing 21 in which slides a rod 23 carrying a bracket 24 and a support 27 for a flame torch 28. A roller 25 provided on the bracket 24 is urged to engage the template 32, extending laterally of the former 7 and fixed to brackets 30 on the plate 4 by bolts 31, by means of a cord 34 attached to a cross-head 33 on the rod 23 and passing over pulleys 35, 36 and 37 on which latter is hung a weight 38. The nozzle of the torch 28 is adjustable by means of screws 40 and the torch 28 is adjustable by a rack-and-pinion gearing 29. The torch bracket 24 may be urged inwardly by springs.
Patent GB-958210-A (GB)
Title: Improvements in photographic paper
Inventor: SHIPTON KENNETH CHARLES
IPC: G03C1/79
Filed: 1959-06-05
Abstract: 958,210. Photographic light-sensitive materials. KODAK Ltd. Sept. 1, 1960 [June 5, 1959], No. 19302/59. Heading G2C. A photographic material comprises a water proofed paper base bearing, in order, a layer of polymeric material containing a dispersion of silica, and a silver halide emulsion layer. The paper base (which may have a baryta layer) may be water proofed by coating it with polystyrene, poly-α-methyl styrene, polyethylene, polyacrylates, polyalkacrylates, styrene/butadiene copolymer, polyvinyl chloride a polyvinylidene chloride. The polymer in the silica layer may be the same as that used to water proof the base. Specification 800,771 is referred to.
Patent GB-573103-A (GB)
Title: Improvements in or relating to a windshield and cleaner therefor
IPC: B60J1/02
Filed: 1943-11-19
Abstract: 573,103. Vehicle windscreens. TRICO PRODUCTS CORPORATION. Nov. 19, 1943, No. 19384. Convention date, Jan. 30. Drawings to Specification. [Class 20 (iii)] At least that part of a vehicle windscreen over which the wiper moves is made in the form of a portion of the surface of a cone. The apex of the cone is preferably obtuse angled and the axis of the cone lies outside the transparent portion of the screen. The oscillating shaft carrying the wiper arm lies in the line of the axis of the cone.
Patent GB-1084544-A (GB)
Title: Improvements in or relating to the cutting of blanks
Inventor: DANIEL THOMAS JOHN
IPC: B26F1/44
Filed: 1963-05-16
Abstract: A method of cutting blanks from mouldable sheet material with an assembly of cutting blades which is insufficient to cut out the blanks in a single initial step but which is able to cut a plurality of blanks by repeating the cutting step at least once after relative displacement of the assembly and the sheet a predetermined distance in a predetermined direction following the first or the previous cutting step. A continuous strip 11, Fig. 1, of sheet rubber is fed intermittently between a cutting bed 12 and a cutting head 13 by means of pairs of rollers 14, 15.  Spaced steel cutting blades are secured to the head 13 by magnetic or mechanical means.  The head is brought down against the strip between intermittent advances of the strip.  A leaf spring may be mounted on each side of each blade to come into contact with the strip immediately before the blade in each cutting step.  To facilitate movement of the strip, the blades do not cut out each blank completely.  For example, a substantially central nick may be disposed in some or all of the blades or the blades may not cut through the entire thickness of the strip.  As shown in Fig. 2, three sets of blades 16, 17, 18 are provided for producing interlocking hexagons. Each blade may be longer than a side of the hexagon so that it cuts through adjacent blanks.  The blades may, alternatively, be curved.  The blanks cut out may be square, triangular, trapezoidal or pentagonal.  In a modification, Fig. 11, the apparatus comprises a cutting head 47 and a cutting bed 48 both pivotally mounted on a support 41.  The head 47 and bed 48 have respectively connected thereto cranks 50, 51 eccentrically mounted on a shaft, which has an axis 43a, driven from an electric motor 42. The shaft has mounted thereon an adjustable crank 54 connected by a link 57 to a crank 56 carried by a shaft 55 on which a ratchet roller 60 is mounted.  The sheet 64 to be cut is fed by the roller 60 and the sheet is supported at its lower end by a take-off member 66.  The shaft 55 rotates alternately in clockwise and counterclockwise directions and the roller 60 rotates with the shaft 55 only when the shaft is rotating clockwise.  The blades 67 are carried in a template 75, Fig. 16, secured releasably to the head 47 to which is secured a spring-loaded clamping and stripping plate 85.  The bed 48 has a cutting plate 87 secured thereto.  To facilitate securing the blades 67 to the head 47, the head is lowered to a horizontal position after disconnecting the cranks 50.  The head 47 is subsequently raised by means of a chain 68 passing round a rotatable sprocket 71. <PICT:1084544/C3/1> <PICT:1084544/C3/2> <PICT:1084544/C3/3> <PICT:1084544/C3/4>
Patent GB-730883-A (GB)
Title: Process for manufacturing keys provided with figures, letters or other symbols, for registering and calculating machines typewriters and the like
IPC: B29C43/00
Filed: 1952-08-01
Abstract: 730,883. Typewriters. RIV OFFICINE DI VILLAR PEROSA SOC. PER AZIONI. Aug. 1, 1952 [Aug. 1, 1951], No. 19570/52. Class 100 (4). Typewriter and similar keys comprise a button 1 of plastic material having a smooth upper face, and a symbol-carrying disc 3 of a resin-impregnated cellulose pulp sheet material. The disc is secured to the face of the key by heat and pressure. The impregnant in the material for the disc 3 may be a melamine resin on which the symbol 4 is drawn by suitable ink.
Patent GB-1522277-A (GB)
Title: Decaffeination of green coffee
IPC: A23F5/20
Filed: 1977-05-10
Abstract: 1522277 Decaffeinating coffee GENERAL FOODS CORP 10 May 1977 19587/77 Heading A2B Green coffee is decaffeinated by extracting with an aqueous fluid, e.g. water or a caffeine-defficient solution of green coffee solubles, drying the extract, and contacting the resultant solids with a solvent for caffeine. The decaffeinated solids may be mixed with water, after removing residual solvent, and either absorbed onto dry decaffeinated green coffee or used to decaffeinate green coffee. The caffeine-rich solvent by-product may be treated for the recovery of solvent, caffeine-rich solids and further decaffeinated solids, suitable recovery systems being illustrated. Suitable solvents are specified.
Patent GB-147676-A (GB)
Title: New or improved arrangement of pneumatically played grand piano
IPC: G10F1/02
Filed: 1920-07-08
Abstract: 147,676. Savoye, R., and Dryvers, U. April 16, 1914, [Convention date]. Void [Published under Sect. 91 of the Act]. Player - pianos; actions ; bellows, arrangement of; treadle devices; winding - mechanism. -In a pneumatically-operated grand piano certain of the operating-parts (keylever pneumatics a, bellows Q, reservoir R, distribution chest S, and expression pneumatics are fixed permanently on the piano while the other parts (tracker-bar H, spool mechanism I, J, K, and speed-regulator) are located in a detachable housing L adapted to be fitted over the middle of the keyboard. The pneumatics a are arranged in two or more rows between the front legs of the piano and operate the key-levers c by tappets d<1> on levers d on a dummy keyboard D. It is stated that the levers d may be set at any angle desired, allowing the arrangement to be adapted to all types of piano. The tracker-ducts h, control tubes, and tube supplying wind to the motor K are connected to a plate M which has perforations registering with similar perforations in a plate G on the piano. The plates M, G are preferably cut from a single piece perforated before cutting, and are tightlyclamped together by means of cams p<3> mounted on bolts P each rotated in a socket g in the plate G by a handle, p<4> to engage a notch m<1> on a dowel pin m carried by the plate M. The treadles t can be raised into the open-fronted casing T.
Patent GB-1425021-A (GB)
Title: Embossing dies
IPC: B29C33/00
Filed: 1972-04-28
Abstract: 1425021 Embossing dies BRITISH UNITED SHOE MACHINERY CO Ltd 27 April 1973 [28 April 1972] 19743/72 Heading B6C In a method of making first and second dies for use in decorating thermoplastic shoe uppers an 'original' having imitation stitch and other protruberances is used as a mould to cast a female second die in cold-curing silicone rubber The recesses of this die are filled with white plasticine and the result photographed. This photograph is used to image a Dycril (R.T.M.) plate which is then etched to produce to a recessed member from which is cast a master plate in an epoxy resin. This master plate is used to produce in cold-curing silicone rubber the first die which has recesses matching those of the second die. If the first die is to be made the manufacture of the master plate is omitted and the first die is cast directly from the etched Dycril plate.
Patent GB-197683-A (GB)
Abstract: 197,683. British Arca Regulators, Ltd., (Assignees of Aktiebolaget Area Regulatorer). May 13, 1922, [Convention date). Addition to 116,074. Thickness of paper, regulating and gauging.-Relates to a method of and apparatus for automatic control, as described in the parent Specification, wherein a main regulating device which controls a fluid or electric current, the speed of machinery or the like, is itself controlled by a non-compressible liquid flowing in a conduit and issuing from a discharge nozzle 4, the pressure of the liquid being caused to vary in accordance with the variations in the working of the apparatus to be controlled by causing a movable member such as a shield, cup, plate or the like 9, arranged in front of the nozzle, to move towards or away from the nozzle orifice, and consists in making the shield or the like movable relatively to the adjusting member which operates it. In Fig. 1 the plate 9 is secured to a copper diaphragm 6 secured to the base 1 of the relay by a cover 7. The plate is operated by a pin 8 screwed into the lever 2 which adjusts itself in accordance with the pressure in a steam main, which pressure is to be controlled. The liquid runs to waste through the connection 5 and splashing is prevented. In a modification the plate 9 is secured to a flat spring mounted on the base of the relay. If desired the plate may be mounted on the adjusting member by means of a universal joint. In all cases the plate may assume an oblique position in its movement to and from the nozzle. The flat spring and the diaphragm may be secured to the lever instead of the relay base if desired. The parts must be so arranged that the plate is actuated at a point or surface which, when viewed in a direction toward the nozzle, lies within the outer edge of the bearing surface of the plate on the nozzle.
Patent GB-220956-A (GB)
Title: Improvements in machines for slicing meat and the like
IPC: B26D1/143
Filed: 1924-08-22
Abstract: 220,956. Markische Maschinenbau Ges. Aug. 24, 1923, [Convention date]. Cutting slices in succession.-In a rotary-knife, reciprocating-table, slicing-machine, means are provided whereby the knife is stopped for cutting ham, sausage or cheese, or the slide is stopped to facilitate the sharpening of the knite, the driving-gear for the machine being disposed in a casing which also carries the knife. The knife 16 is journaled in a bearing member 15, the axle 17 carrying a pinion 29 twice as wide as, and engaging with, a spur wheel 27 on a shaft 18 secured to the crank 13. The shaft 18 carries a pinion 28 which is twice as wide as a spur wheel 30 on a shaft 20 carrying a crank pin 21 which oscillates a crank 23 by a connecting-rod 22. The oscillating arm 24 is connected by a link 26 to the table 11 which is thereby reciprocated. The shaft 18 is slidable into three positions in any of which it is held by a catch 31 engaging with one of the grooves 32, 33, 34. In Fig. 1, the catch 31 engages the groove 32 and both the knife and the table are operable. The shaft 18, when moved to the left, engages a hole in the knife 16 and locks it, the wheel 27 is disengaged from the pinion 29 and the table is reciprocated by the crank 19. Movement to the right re-engages the wheels 27, 29 and disengages the wheels 28, 30, the knife only then being operable. The sharpening material is placed in contact with the blade where it is exposed for cutting.
Patent GB-601702-A (GB)
Title: Improved process for the catalytic isomerisation of paraffins and the preparation ofcatalysts therefor
IPC: C07C5/27
Filed: 1945-08-02
Abstract: A supported aluminium halide catalyst is formed in situ in a reaction zone by contacting a porous bed of earthy material, e.g. bauxite, containing iron oxide and residual water, with aluminium halide vapours and a carrier gas until the effluent gas is substantially free from water vapour and hydrogen halide, and then passing into the bed aluminium halide vapours which are adsorbed by the earthy material; during the first stage the aluminium halide reacts with the residual water to form hydrogen halide and aluminium oxide, and the hydrogen halide so formed reacts with the iron oxide to form iron halide and water.  The carrier gas may be methane or other hydrocarbon gas, or vapours of a paraffin, e.g. butane, to be isomerised using the catalyst.  The earthy material may first be roasted at 1000-1200 DEG  F. and then blown with a hot dry gas, e.g. butane vapours at 330 DEG  F., the subsequent treatment with aluminium halide vapours being carried out at about 300 DEG  F.  The catalyst may be used for the isomerisation of normal butane to iso-butane at about 270 DEG  F. in the presence of a hydrogen halide. Specifications 564,346 and 587,193 are referred to.ALSO:Normal paraffins are isomerised by passing vapours thereof through a supported aluminium halide catalyst which has been formed in situ in a reaction zone by contacting a porous bed of earthy material, e.g. bauxite, containing iron oxide and residual water, with aluminium halide vapours and a carrier gas until the effluent gas is substantially free from water vapour and hydrogen halide, and then passing into the bed aluminium halide vapours which are adsorbed by the earthy material (see Group III).  The isomerisation of normal butane is carried out at about 270 DEG  F. in the presence of a hydrogen halide.  Specifications 564,346 and 587,193 are referred to.
Patent GB-241164-A (GB)
Title: Improvements in or relating to installations for supplying heat and carbonic acid to hot-houses
IPC: A01G7/02
Filed: 1925-08-07
Abstract: 241,164. Ketterer, E. Oct. 9, 1924, [Convention date]. Plants, treatment of growing .-In an installation for heating hot-houses and supplying them with carbonic acid gas, means are provided for dissolving in a solution the carbonic acid contained in the combustion gases of a furnace and subsequently liberating it and also for supplying the carbonic acid direct without dissolving it, the apparatus used, in the one case, for dissolving the carbonic acid being, in the other case, used for washing the combustion gases. The gases from the furnace 1 that heats the boiler 2 pass first through a flue 4 to a washer 5, where they are freed from sulphurous acid. The washed gases pass through a pipe 8 into an absorbing chamber 9 where they meet a solution such as soda lye delivered from a sprinkler 13. The carbonic acid is dissolved and forms a bicarbonate solution while the residual gases escape through a chimney 14. The bicarbonate solution is pumped along a pipe 12 and passes back into the chamber 9 for further saturation. When required it may be passed into a vaporizer 17 heated from the boiler by a coil 18. The mixture of steam and carbonic acid from the vaporizer passes into a ribbed condensing chamber 19 in a casing 20 through which fresh air is driven by a blower 21. The condensed steam is returned to the chamber 9 and the carbonic acid passes into the pressure pipe of the blower 21 and is driven with the air through the pipe 25 to the hot-house. The carbonic acid may be stored up in the solution during the night for use in the dav time. When the carbonic acid is not to be dissolved, water is used in the chamber 9 instead of a solution and the washed gas passes direct to the blower 21 through the chimney 14 and a pipe 31, the vaporizer 17 and condenser 19 being inoperative. If the combustion gases are not to be passed through the apparatus they may be directed into the open through a chimney 27.