baber/WOPTO huggingface dataset:
Patent GB-1218221-A (GB)
Title: Improvements in and relating to polymerization of olefines
IPC: C08F10/00
Filed: 1968-05-06
Abstract: 1,218,221. Polymer purification. EASTMAN KODAK CO. 6 May, 1968 [4 May, 1967; 18 Dec., 1967], No. 21303/68. Heading C3P. In the polymerization of olefines, catalyst residues are removed from the polymer solution by filtering to remove a major portion of catalyst residues, followed by contacting the filtered polymer solution with alumina. A filter aid having a micron retention rating of greater than three may be added to the polymer solution before filtering. The filtering may be performed at from 150‹ to 250‹ C. under conditions such that there is a pressure drop across the filter of below 50 p.s.i.g. The filtered solution may be contacted with alumina at a temperature of 150‹ to 250‹ C. and a pressure of 50 to 300 p.s.i.g. The filtered polymer solution, after contact with alumina, is preferably concentrated to between 70 and 80% by weight polymer, and the polymer concentrate thus formed may be extruded and extracted with a solvent capable of dissolving amorphous polymer. The polyolefine may be obtained from at least one alpha monoolefine having from 2 to 20 carbon atoms, or alternatively the polyolefine may be a polyallomer, i.e. a crystalline, block polymer synthesized from two or more olefins in which the individual segments exhibit degrees of crystallinity normally associated only with alphaolefin homopolymers. The catalyst may be an oxide of chromium molybdenum or vanadium, or lithium or compound thereof in combination with a transition metal halide. The polymerization may be carried out in an organic solvent at a temperature of 120‹ to 300‹ C. and pressure of up to 2000 atmospheres. In the examples, (1) propylene is polymerized in mineral spirits in the presence of a catalyst system comprising lithium aluminium hydride, titanium trichloride and optionally one or more of lithium, sodium fluoride and magnesium oxide, (2) a propyleneethylene polyallomer is prepared by polymerizing in two stages the monomers in the presence of lithium dialuminium heptahydride, titanium trichloride and sodium fluoride, in mineral spirits. The polymers obtained in (1) and (2) are each purified by filtration followed by contacting with alumina.
Patent GB-276016-A (GB)
Title: Improvements in magnesite refractories and method of making the same
IPC: C04B35/03
Filed: 1927-05-06
Abstract: 276,016. United States Metals Refining Co., (Assignees of Marks, A.). June 8, 1926, [Convention date]. Addition to 244,391. Refractory substances containing magnesite.- In the manufacture of refractory articles by moulding a mixture of dead-burned magnesite and a siccative oil, the oil is allowed to become oxidized by heating or standing to enhance its binding properties. If raw linseed oil is used it may be heated either before or after mixing with the body material, but before moulding. Alternatively the plastic mass of magnesite and oil may beallowed to stand for some time before moulding. The moulded articles are preferably dried slowly under conditions of increasing temperature and decreasing humidity, as described in Specification 271,847. Finally, the articles may either be burned before use or built into a furnace &c. and burned in situ. To obtain a compact product the magnesite is preferably composed of a mixture of different degrees of fineness, and the moulding is performed under pressure. Any vegetable or animal siccative oil may be used; driers such as oxides of lead, manganese, or cobalt, and thinners such as light mineral oils may also be added. The best proportion of oil is about 6.5 per cent of the magnesite.
Patent GB-1113519-A (GB)
Title: A sealing device between the plates in plate heat exchangers
IPC: F28F3/08
Filed: 1966-05-13
Abstract: 1,113,519. Plate heat exchangers. ALFALAVAL AKTIEBOLAG. 13 May, 1966 [13 May, 1965], No. 21354/66. Heading F4S. A plate heat exchanger is formed from a plurality of thin, rectangular sheet metal plates, 15-19, separated by endless gaskets 20-25 of a fibrous material, such as asbestos impregnated with rubber, the plates and gaskets forming sealed interspaces 28-33, which, at their corners, are provided with openings through which fluid media are led to and from the interspaces. Alternate interspaces contain one of the two media between which heat exchange takes place with supporting means 34, 35 limiting the extent to which the plates are bent if one of said media is at a higher pressure than the other. The plates and gaskets are held compressed and in place by means of pressure plates 26 and 27 acted upon by clamping means not shown, the plane width of the gasket, in cms., being (b/2) where in which " B " is the shortest distance in cms. across the plate between the inner edges of the plane surfaces of the gasket, " P is the maximum operating pressure in (kg./cm.<SP>2</SP>) in the interspace and " t is the thickness of the gasket in cm.
Patent GB-651048-A (GB)
Title: Improvements in or relating to vapour generating and superheating units
IPC: F22B21/34
Filed: 1948-08-13
Abstract: 651,048. Water-tube steam boilers; superheating. BABCOCK & WILCOX, Ltd., and EVANS, R. H. Aug. 13. 1948, No. 21366. [Classes 123(ii) and 123(iii)] A steam boiler &c. comprises an upper transverse steam-and-water drum 1 disposed above the front wall 2 of a furnace 3 which is lined with steam-generating tubes and is provided with a division wall 24 defining an elongated gas flow path which extends first as an upflow pass 25 and then as a downflow pass 26 leading to a convection pass 16 locating two banks 43, 44 of superheater tubes. A passage 42 is provided at the top of the pass 16 for directing the gases to a further downflow pass, not shown, locating an economizer and an air heater, and externally-operable dampers 37 associated with openings in the roof 35 of the pass 26 permit gas flow direct from the pass 25 to the passage 42 and thus regulation of the degree of superheat. The wall 24 is constituted by the upper parts of tubes 19 which extend from a lower header 20 and line the rear wall 17 of the lower part of the furnace. Above said wall 17 the tubes are inclined forwardly in a row 23 and then extended vertically, some of the tubes above the wall 24 being displaced forwardly and laterally so that they all lie in sets of three, 27, 28, 29, in spaced planes and in this manner are connected to the drum 1; every fourth tube 21 of the tubes 19, however, is inclined rearwardly to the back wall 22 of the setting. Similarly the partition wall 30 between the passes 26, 16 is defined by tubes 31 which extend from a header 32 to the drum 1, are spaced below the wall proper to provide a screen 31, and above said wall extend forwardly alternately in two rows 34, 36 with the row 34 coated with refractory to form the roof 35. Further tubes 40 extend from the header 32 to alternate with the tubes 21 lining the back wall 22, and, as shown, the tube row 23 and tubes 21, 40, respectively, are coated with refractory 49, 50 to provide surfaces converging downwardly below the passes 26, 16 to a hopper 51 which has a number of spaced outlets with ducts 52 leading to nozzle boxes 53, tubes 54 and injection nozzles 55 so that grits collected in the hopper may be injected with air into the furnace for retiring. The furnace is fired by a number of sprinkled fuel-feeding mechanisms 7 associated with an endless grate 8 adapted to discharge the ash at the front of the furnace. The tubes lining the front and side walls of the furnace 3, also the sides of the pass 16, extend from lower headers such as 5, 11, 15 to upper headers 12 or direct to the drum 1, the lower headers being supplied with water through front and rear groups 61, 62 of downcomers disposed between the front wall 2 of the furnace and its insulation 60. Specification 651,055, [Group XII], is referred to,
Patent GB-1132572-A (GB)
Title: Improvements relating to child harnesses
Inventor: NEWMAN EDWARD ALBERT HAROLD
IPC: A47D13/08
Filed: 1965-05-20
Abstract: 1,132,572. Harnesses. P. E. NEWMAN. 6 May, 1966 [20 May, 1965], No. 21386/65. Heading A3V. A child's harness securable to a pram, chair &c. by means of rings 4 has a cord 12 threaded through rings 8, 9 mounted on the front of the waist belt 1 by means of a stitched strip 11. In use, a toy is attached to a loop 13 at each end of the cord, preventing it from being separated from the belt while allowing it to move across the front of the child, the length of the cord being such that as one toy goes out of the child's reach, the other comes into reach.
Patent GB-1487371-A (GB)
Title: Optical fibre manufacture
IPC: C03C13/04
Filed: 1974-05-15
Abstract: Novel dopants (dopes), namely oxides of the elements gallium, indium, arsenic and antimony, are used in a process known per se for the production of a blank for optical fibres. The inner wall of a glass tube (11) is coated with a layer (10) which, after the glass tube has been collapsed to give a blank and after the latter has been drawn to form an optical fibre, forms the fibre core. This has a higher refractive index than the fibre cladding layer formed from the glass tube. <IMAGE>
Patent GB-465192-A (GB)
Title: Process of stabilising chlorinated hydrocarbons of low molecular weight
IPC: C07C17/42
Filed: 1935-07-29
Abstract: Unsaturated chlorinated hydrocarbons containing two carbon atoms are stabilized by adding a small quantity of an aliphatic alcohol having three or more carbon atoms and boiling within the range 80--120 DEG C.  The mixture is suitable for chemical cleaning and for degreasing metals.  For instance trichlorethylene may be stabilized by adding 0,5--1 per cent of isopropyl, butyl, isobutyl or secondary amyl alcohol.  A quantity of a resin or balsam such as gum benzoin or Peruvian balsam may be added to the alcohol up to an equal weight, in which case a smaller quantity of the alcohol may be used.  The prior use of hydrocarbons, (xylene and amylene) mono- and polyhydric phenols, arylamines such as aniline, and other nitrogenous bases such as pyridine, quinoline, diphenyl guanidine, aminophenol, and also resins is referred to.ALSO:Unsaturated chlorinated hydrocarbons containing two carbon atoms are stabilized by adding a small quantity of an aliphatic alcohol having three or more carbon atoms, and boiling within the range 80--120 DEG  C.  The mixture is suitable for chemical cleaning and for degreasing metals.  For instance trichlorethylene may be stabilized by adding 0,5--1 per cent of isopropyl, butyl, isobutyl or secondary amyl alcohol.  A quantity of a resin or balsam such as gum, benzoin or Peruvian balsam, may be added to the alcohol up to an equal weight, in which case a smaller quantity of alcohol may be used.  The prior use of hydrocarbons (xylene and emylene) mono- and polyhydric phenols, arylamines such as aniline, and other nitrogenous bases such as pyridine, quinoline, diphenyl quanidine, amino-phenol, and also resins, is referred to.
Patent GB-182355-A (GB)
Title: Improvements in computing weighing scales
IPC: G01G23/34
Filed: 1921-08-16
Abstract: 182,355. Marks, E. C. R., (Toledo Scale Co.). Aug. 16, 1921. Indicating-mechanism ; computing-apparatus.- Relates to a computing weighing-scale having a light-projecting means and a scale chart, both of which are movable, the one by manually-operable means and the other by the load-balancing mechanism of the scale. The load balancing mechanism is of the rolling-sector type, and is adapted to give a translucent chart 18, Figs. 4 and 5, a vertical displacement proportional to the load. Two pairs of guide-rods, 24, 25, arranged parallel to the scale, are adapted to carry slides 26, 27 respectively. These slides have racks on their lower sides engaging pinions 29, 30 mounted on a shaft 31, at the forward end of which is a handle 32 and a dial 33 which cooperates with a pointer to indicate prices. Fixed upon one, end of the slide 26 is a lamp 35 and a condensing lens 36, which co-operate with a projector 37 on the slide 27 to throw an enlarged image of part of the chart on to a ground-glass plate 41, mirrors 39, 40 being used to reflect the light at the turns in the passage 38. The chart 18 is inscribed with a series of vertical columns, alternate columns being identical and having weight indications, while the remainder indicate values corresponding to the various prices inscribed on the dial 33. Only a small area of the chart is projected on to the screen 41, which is provided with an horizontal reading line, and is set back so as to be in shadow. The chart is divided vertically into identically-inscribed halves, so that by fixing a similar arrangement of lamp and projector elements on to the other ends of the slides 26, 27 similar indications are projected on to screens on the merchant's and on the customer's side of the scale. In a modification, Fig. 8, the chart 18<a> is rigidly fixed to the pendulum 6<a>, necessitating vertical instead of horizontal guides 24a.
Patent GB-315765-A (GB)
Title: Improvements relating to clamping devices for cables under tension
IPC: F16B2/14
Filed: 1929-07-16
Abstract: 315,765. Terzoli, U. July 17, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Securing ropes. - A gripping or clamping device for a cable under tension comprises a metal box 2 and means such as a block 5, Fig. 1, or wedge 7, Fig. 2, for clamping the cable when the tension is slackened.
Patent GB-839946-A (GB)
Title: Lapping surface conditioning means
IPC: B24B37/10
Filed: 1958-07-08
Abstract: 839,946. Lapping. TAFT-PEIRCE MANU FACTURING CO. July 8, 1958 [July 26, 1967], No. 21869/58. Class 60. [Also in Group XXXV] Lapping apparatus for truing surfaces of workpieces comprises a rotatable lap plate of magnetic material, the lapping surface of the plate being conditioned by a rotatable wear body which carries magnetic means to produce the necessary pressure between the body and the plate. The lap plate 12 of cast iron rotates in an opening in a plate 11. The wear body comprises an annular frame 19 which is localized by a central roller 17 on a stub shaft 16 eccentric to the drive shaft 13 of the lap plate and by a roller 27 carried by an arm 24. The frame 19 has downwardly projecting non-magnetic legs 20 alternating with magnetic legs 120, the end faces of the legs lying in the same plane so as to contact the lapping surface of the lap plate. Each leg 20 comprises a cylindrical body 44 having a neck 133 extending up through a hole 34 in the frame 19 and secured by a cap 220 and screw 38. Each magnetic leg 120 comprises a permanent magnet 30 and a cast iron pole piece 43, both enclosed in a brass sleeve 41 fitting into a cylindrical cast iron pole piece 29 which is in magnetic connection with the upper pole of the magnet 30 through a steel cylinder 32. The latter extends up through a hole 34 in the frame and is secured by a cap 220 and screw 38. The frame 19 may be reversed so that the caps 220 then act as the conditioning members. Alternatively, the frame 19 may have some upwardly-projecting magnetic legs but fewer in number than the downwardly-projecting magnetic legs, the frame being reversed when desired. The workpieces 48 are nested in apertures 47 in a plate 46 which fits within the legs 20, 120. Alternatively, an apertured plate may form part of the frame 19. The lap plate surface may have radial grooves, a spiral groove or grooves in a grid portion to receive and partially contain lapping abrasive and carrier liquid.
Patent GB-315727-A (GB)
Title: Improvements in or relating to accessory devices for use in connection with motor road vehicles
IPC: B60C23/00
Filed: 1929-07-16
Abstract: 315,727. Tavernier, F. X. R. July 16, 1928, [Convention date]. Driving auxiliary parts.- Accessory apparatus, such as an air compressor, adapted to be driven from the free end of the engine shaft is secured by means of an expanding bush or an equivalent device to a ring on the chassis frame concentric with the engine shaft. In the construction shown in Fig. 1, the shaft 3 of the' compressor 2 is driven by means of a flexible shaft 4 having a slotted coupling member 5 adapted to engage a cross pin in a tubular end of the engine-shaft (not shown). The end of the compressor shaft may be formed with pins 58, Fig. 14, to engage slots 56 in the starter end of the engine shaft, or with spring-pressed keys 139, Fig. 15, to engage keyways 138 in the engine shaft.
Patent GB-572115-A (GB)
Title: Improvements in or relating to precast slabs for building
IPC: E04C2/38
Filed: 1943-12-31
Abstract: 572,115. Building blocks. STANTON IRONWORKS CO., Ltd., CORNELIUS, F. B., and WOODCOCK, H. Dec. 31, 1943, No. 21913. [Class 87 (i)] Wall slabs b for framed structures have one vertical edge deeply grooved at d to interlock with a dovetail &c. ridge e on the vertical edge of the adjacent slab and to enclose one of the frame stanchions a between them, the groove d being widened at the middle part f and the ridge e narrowed at the middle part g so that one slab may be interlocked with the next by raising it only to the height of such narrowed ridge part as shown and not the whole height of the slab; sufficient clearance is left for grouting. Grooves may be provided in the top and bottom edges for jointing material together with means at one or both ends of the slabs for attaching an inner slab or lining thereto.
Patent GB-733438-A (GB)
Title: Process for preparing pure starch
IPC: C08B30/04
Filed: 1952-09-01
Abstract: Waste cell conglomerates with or without bran and a little starch obtained in the purification of starch (see Group V) are worked into fodder.  Specifications 686,072 and 717,918, [both in Group V], are referred to.ALSO:In purifying starch, e.g. maize starch, starch milk from which particles above a selected size between 100 and 200 microns, preferably between 100 and 130 microns have been screened, is separated in a vortex separator into a fraction from the outer part of the vortex containing most of the particles over a selected size between 40 and 80 microns, e.g. coarse cell conglomerates and any sand and rust present, and a fraction from the inner part of the vortex containing most of the particles under the said selected size between 40 and 80 microns, e.g. fine starch, gluten and bran.  The selected size for separation may be 60 microns.  The vortex separator may be a hydrocyclone or a multihydrocyclone, e.g. of the kind described in Specification 686,072.  The overflow fraction may be passed to starch tables or separators or treated as described in Specification 717,918 to separate starch from gluten.  Two or more hydrocyclones or multihydrocyclones may be used in series.  The overflow fraction from the second and any following hydrocyclones may be returned to the first hydrocyclone.  The separated starch may be washed and dried.
Patent GB-516335-A (GB)
Title: Screens for stereoscopic television
Filed: 1938-07-25
Abstract: 516,335. Television. CLAY, R. S. July 25, 1938,No.21982. [Class 40(iii)] . A ruled screen for stereoscopic receivers is made to correspond to the actual spacing of the picture lines by photographing said lines, produced by an unmodulated scanning beam of the cathode-ray tube, and printing from the negative or controlling a ruling machine thereby. If desired the plane of the screen may also be correspondingly graded to adjust its distance from the picture at all points in accordance with the geometrical conditions laid down in Specification 497,691.
Patent GB-383660-A (GB)
Title: Laminated boards, tiles or the like
IPC: B28B1/52
Filed: 1931-08-01
Abstract: 383,660. Compound sheet materials. BANKS, M. S., Trimley St. Martin's Rectory, Ipswich. Aug. 1, 1931, No. 21997. [Class 140.] Laminated boards, panels, tiles, &c. are made by mixing and partially drying a cement which is then trowelled or similarly acted upon while spread on a rigid surface, and thereafter forcing against it a layer of wood, cardboard or other fibrous material in a moistened condition. For instance, Parian cement is mixed with water and spread evenly on a glass or other smooth-topped table. During drying, it is trowelled or smoothed to produce an even surface in contact with the table. A layer of wood, millboard, strawboard or other fibrous material, previously soaked in water and if necessary roughened on the contacting surface, is then pressed against the partially dried cement. The cement surface of the material may be polished, or may be coated with a solution of a cellulose derivative. The cement may have colouring materials mixed therewith, either partially or completely, to give either a mottled or self-coloured appearance. Sand, with or without colouring matter, may also be mixed with the cement.
Patent GB-1378565-A (GB)
Title: Data processing systems
IPC: G06F9/38
Filed: 1972-05-11
Abstract: 1378565 Digital computer; handling iristructions INTERNATIONAL BUSINESS MACHINES CORP 11 May 1972 [31 Aug 1971] 21999/72 Heading G4A A digital computer has separate instruction buffers 14, 16 for separate instruction streams and selection circuitry 18 for choosing the next instruction to be executed from one of them. A magnetic core or monolithic store 10 is connected via a processing unit 12 to respective buffers 14, 16 each holding program instructions from store 10. The processing unit deals with instructions on a pipeline basis and a program (Figs. 3A, 3B, not shown) and special hardware (Figs. 4A, 4B) determines which instruction from buffers 14, 16 is to be executed next. The determination is effected by four (or more) tests on each stream, e.g. branching, interlocks. If both the instructions in buffers 14, 16 are equally suitable for execution, then instructions are taken alternately from the streams.
Patent GB-1224766-A (GB)
Title: A machine for fabricating storage battery sub-assemblies
Inventor: FARMER JAMES EDGAR
IPC: H01M50/536
Filed: 1968-06-26
Abstract: 1,224,766. Composite casting machines. FARMER MOLD & MACHINE WORKS Inc. 26 June, 1968 [29 June, 1967], No. 22060/70. Divided out of 1,224,765. Heading B3F. The disclosure is the same as in Specification 1,224,765 and 1,224,767 but the claims are directed to a machine for fabricating storage battery elements by casting on the straps and posts at a casting station which comprises a mould having a plurality of cavities for receiving lead, each in the shape of a strap and post, means for supplying molten lead to the cavities including a valve block having an input of molten lead and a passage opening adjacent to each cavity, each passage having a valve to allow or prevent the flow of molten lead.
Patent GB-405947-A (GB)
Title: Improvements in or relating to player grand pianos
IPC: G10F1/02
Filed: 1932-08-06
Abstract: 405,947. Automatic musical instruments. TRIUMPH AUTO PIANOS (1930), Ltd., and SAFFELL, F. H., 185, Regent Street, London. Aug. 6, 1932, No. 22133. [Class 88 (i).] In a player grand piano wherein on moving the tracker box, which is mounted beneath the key bed in a carrier 19, into operative position the bellows treadles are by linkwork also moved into operative position, and wherein the driving motor is stationary on the instrument, driving connection between the motor and the rolls is established at the same time by the engagement of the parts of a loose coupling consisting of a crank 21 on the motor shaft and an arm 22<a> on a spindle 22 mounted on the carrier and carrying a pulley 23<a> which drives the winding mechanism through a belt 23b. Fig. 3 shows the linkage with the treadles 30 in closed position. Links 29, 28 connect the treadles to the bellows and are supported at their joint 29<a> by links 36 hanging from a fixed point 37 to which point also the link 43 connected to the carrier 19 is pivoted. The carrier 19 in being pushed back to the position shown also closes a door 14 about pivots 14<a> through a link 41. When opened out the upper ends of links 32 slide to the lower ends of fixed vertical guides 34 while the ends 32<a> provided with rubber buffers rest on the floor.