baber/WOPTO huggingface dataset:
Patent GB-598594-A (GB)
Title: Improvements in or relating to fiberizing asbestos
IPC: D02G3/20
Filed: 1945-02-14
Abstract: 598,594. Asbestos. RAYBESTOS-MANHATTAN, Inc. Feb. 14, 1945, No. 3707. Convention date, Jan. 24, 1944. [Class 70] [Also in Group II] Asbestos, in rock or partially crushed form, is disintegrated into fibres of substantially natural length by confining it in a chamber under pressure with an inert gas, and then suddenly releasing the pressure. The aggregate is introduced into a chamber 10 having valvecontrolled entrance and exit 11, 12 sufficiently large to permit the passage of the natural-length fibres. Pressure of 200-1200 lbs., and preferably 400-800 lbs. per square inch is applied for a period of 5-30 seconds, and is suddenly released by the opening of a quick-acting valve 15 whereby the asbestos is ejected into a cyclone separator 19. The pressure gas may be carbon dioxide, nitrogen, argon, ammonia, sulphur dioxide, steam, or preferably air; if steam is used, the chamber 10 is insulated or heated to prevent condensation. The process may be carried out under heat.
Patent GB-451247-A (GB)
Title: Improvements in the manufacture of laminated safety glass
IPC: C03C27/10
Filed: 1935-02-06
Abstract: 451,247. Compound glass. LOW, K. S., 8, Waterloo Place, Pall Mall, Westminster. Feb. 6, 1935, No. 3813. [Class 140] Laminated glass is made by placing between glass sheets a sheet of cellulose ester softened by dipping in a bath comprising a high-boiling fatty acid ester solvent for the cellulose ester, a high-boiling derivative of a polyhydric alcohol, e.g. an acetate of glycerol, and a compatible lower boiling liquid, e.g. an aliphatic alcohol such as butyl alcohol, and subjecting the assembly to uniform heat without pressure. The fatty acid ester solvent may be amyl acetate in the case of nitrocellulose, or ethyl lactate in the case of acetyl cellulose. For nitrocellulose a mixture of iso-butylene glyocl diacetate, amyl acetate, and normal butyl alcohol is suitable, and for acetyl cellulose a mixture of glycerol triacetate, ethyl lactate, and propyl alcohol. The heat treatment may be at 100‹ C. for about 30 minutes.
Patent GB-770359-A (GB)
Title: Process for the dyeing of wool with complex heavy metal compounds of dyestuffs
IPC: D06P3/20
Filed: 1955-02-09
Abstract: In the dyeing of wool with complex heavy-metal compounds, e.g complex chromium or cobalt compounds, of monoazo or azo methine dyestuffs which contain two dyestuff molecules bound to one heavy-metal atom and which contain no acid water-solubilizing groups, the wool is pretreated with a hot mineral acid liquor at pH 3-6 and then the dyestuff is added and dyeing is performed in a closed vessel under pressure with circulation of the liquor at a temperature of, e.g., 100-110 DEG C.  Auxiliaries, e.g. naphthalene monosulphonic acid-formaldehyde condensation products, may be added to the dyebath. Specified mineral acids are sulphuric and phosphoric acids.  Examples are given.  Specification 750,648 is referred to.
Patent GB-479862-A (GB)
Title: Improvements in driving and balancing gears for reciprocating screens
IPC: B07B1/42
Filed: 1936-08-07
Abstract: 479,862. Sifting-apparatus. DRIGENKO, C. T., TWICKENHAM GRAVEL CO., Ltd., and CORT & SON, Ltd., R. Aug. 7, 1936, No. 3865/37. Divided out of 461,248. Class 117] A reciprocating screen 12 is mounted on a fixed support 26 by rigid links 19 or springs and is driven by eccentric or like shafts 14. 27 carried by a floating frame 64 which is supported by links 65 from the screen or fixed support and also by links 66 in combination with the spring cushioning device 34 ... 42. The shafts 14, 27 are intergeared and carry balancing weights 32<1>, 32". To provide additional high frequency oscillations for agitating the. material under treatment, a pair of shafts geared to the shafts 14, 27 and rotating at high speed in opposite directions may be provided with small counterweights. The links 66 are then replaced by rods driven by eccentrics of small throw on the additional shafts. Alternatively, a second additional pair of shafts with counterweights may be provided also rotating at a high speed slightly different from that of the first pair. Specification 461,248 is referred to.
Patent GB-733384-A (GB)
Title: Improvements relating to the pre-shrinking of textile fabric and articles made therefrom
Inventor: BIHALY LAJOS
IPC: D06C7/02
Filed: 1953-02-12
Abstract: 733,384. Finishing fabrics. TRUBENISED (GT. BRITAIN), Ltd. Feb. 26, 1954 [Feb. 12, 1953], No. 3979/53. Class 42 (1). In a method of mechanically pre-shrinking or collapsing a textile fabric the fabric is sup- .ported upon a rotatable member, with the length of the fabric disposed radially of the supporting member and the fabric so confined as to permit movement only in the plane of the fabric and the supporting member is rotated at a speed sufficiently high for the fabric to be collapsed or contracted by centrifugal force. In the arrangement shown for pre-shrinking collars the collar 10 is confined between two pieces of rubber 11, tapering in length, and the sandwich thus formed is housed in a member 12 of similar form but dimensioned so that there is considerable clearance between the inner end of the sandwich and the base of member 12. This assembly is then placed in a chamber 7 in a support member 5 and is retained therein by clamps 9. The support member 5, in this case comprising two radiating arms 6, is mounted on a vertical shaft 4 capable of being rotated at a speed of the order of 1500 r.p.m. The whole assembly may be housed in an outer casing to which steam can be admitted to assist in setting the collar in its contracted condition. The rubber blocks 11 may be stepped instead of tapered along their length. In another embodiment fabric in the piece, folded in zig-zag manner and arranged so that substantially the whole length of the material is disposed radially in the apparatus, is treated in a similar manner.
Patent GB-527699-A (GB)
Title: Improvements in or relating to luggage containers
IPC: A45C13/40
Filed: 1939-02-08
Abstract: 527,699. Suitcases &c. SINCLAIR, G. W. Feb. 8, 1939, No. 4103. [Class 133] An attachment to the exterior of a suitcase or the like for holding an umbrella, walking stick - &c. consists of a flexible looped strip 8 the ends of which are stitched to the article at 6 and 7, a stiff backing-piece 11 of leather, &c. being attached to one side of the loop by stitching at 9 and 10. When the device is not in use the loop member is folded to lie beneath the piece 11 which is secured to the face of the article by a snap fastener 12, 13. The backing- piece may be adapted to hold an address or like card 14.
Patent GB-975101-A (GB)
Title: Improvements in and relating to fencing
IPC: E04H17/14
Filed: 1959-12-18
Abstract: 975,101. Fencing. M. SELBY. March 20, 1961 [Dec. 18, 1959], No. 43166/59. Heading E1B. Interwoven fencing 18, 19 is supported between posts 11, 12 and held in position by triangular section fillets 23, 23<SP>1</SP>, the fillet 23<SP>1</SP> being supported by inclined nails which are fully driven home only after the fencing is in position between the posts. A gravel board 16, intermediate strengthening batten 17 and two-piece top rail 151, 15<SP>11</SP> are provided. According to the Provisional Specification, the ends of the horizontal fencing members 18 are received loosely in grooves in the posts and may be clamped by a single batten 30, Fig. 7, or by a wedge member 30<SP>1</SP>, Fig. 8, engaging a supplementary groove 32.
Patent GB-1489802-A (GB)
Title: Diesel engine
IPC: F02B23/04
Filed: 1975-01-30
Abstract: 1489802 Diesel engine combustion chambers TOYOTA JIDOSHA KOGYO KK 30 Jan 1975 [6 Aug 1974] 4168/75 Heading F1B In a piston for a compression ignition engine wherein fuel is injected into a swirl chamber provided with a throat arranged to communicate with a main combustion chamber which is formed in part by recesses formed in the top of the piston, the recesses comprise a pair of inter-communicating lobes 23 arranged symmetrically about a diameter of the piston, a straight channel 22A for placing the throat in communication with the lobes, the channel extending radially inwardly from a point adjacent the periphery of the piston and its floor being inclined so that the channel becomes shallower towards the lobes, and a second straight channel 22B arranged in alignment with the channel 22A and extending from the lobes, the floor of the channel 22B being co-planar with that of the channel 22A so that it merges with the piston top surface at a point on the said diameter beyond the lobes with respect to the channel 22A. The lobes 23 are of constant depth d. The height h of the step 24 at the junction between the channel 22B and the lobes 23 may be increased for medium-to-low speed engines or decreased for high speed engines. Instead of being of substantially circular or elliptical profile, the lobes 23 may be of partly curved and partly straight profile, Figs. 9p-9t (not shown).
Patent GB-234167-A (GB)
Title: Improvements in magneto-electric machines
IPC: H02K1/14
Filed: 1924-02-18
Abstract: 234,167. Simms, F. R., and Simms Motor Units (1920), Ltd. Feb. 18, 1924. Magneto - electric machines. - A magnetoelectric machine comprises laminated polepieces a<1> embedded in a single tubular frame c of non-magnetic material surrounding the pnlepieces on four sides, the separately attached basepiece b being of brass. Reference has been directed by the Comptroller to Specifications 116.064 and 156,075.
Patent GB-1211113-A (GB)
Title: Device for producing iterative total reflection and including a radiation-sensitive layer
IPC: G01N21/55
Filed: 1968-01-26
Abstract: 1,211,113. Discharge apparatus; lasers; semi-conductor devices. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 26 Jan., 1968 [30 Jan., 1967], No. 4234/68. Headings H1C, H1D and H1K. The efficiency of a radiation sensitive layer is increased by causing multiple reflections of the incident radiation in the layer or in a substrate for the layer. In the photo-multiplier shown in Fig. 1 a prism 16 is provided with a layer 17 of low refractive index, a layer 18 of high refractive index, and a photo-emissive coating 12 which provides the input to an electron multiplier stage 13. The layers 17 and 18 should have a thickness of about one wavelength and the coating 12 may be a few atoms thick. The coating 12 may be omitted if the layer 18 is photo-emissive, and the prism 16 may be replaced by a semi-cylinder (Fig. 3, not shown). Lasers.-A laser comprises a prism 40, Fig. 4, of germanium or silicon coated on its broad face with a layer of silica 42 on which is coated a layer 43 of indium arsenide or of indium antimonide disposed between two reflectors 44. The layers may be applied from the vapour phase. Semi-conductor devices.-A prism (50, Fig. 5, not shown) of silicon is coated on its broad face with a layer (52) of silica on which is deposited a photo-conductive layer of germanium. Alternative materials are germanium for the prism, calcium fluoride for the first layer, and germanium with a mercury dope for the photo-conductor.
Patent GB-1445213-A (GB)
Title: Substituted pyruvic acid derivatives
IPC: C07C59/84
Filed: 1974-01-29
Abstract: 1445213 Pyruvic acid derivatives NISSHIN FLOUR MILLING CO Ltd 29 Jan 1974 [29 Jan 1973 (2)] 04417/76 Divided out of 1445211 Heading C2C Novel compounds IIIA in which R<SP>1</SP> is C 2-4  alkyl and R<SP>3</SP> is H or C 1-3  alkyl, are prepared by reacting a compound II in which R<SP>2</SP> is C 1-3  alkyl, with an alkali metal alcoholate in an alcohol to produce a compound IIIA in which R<SP>3</SP> is C 1-3  alkyl, and, if desired, hydrolysing this to produce a compound IIIA in which R<SP>3</SP> is H.
Patent GB-983769-A (GB)
Title: Solid state electronic devices
IPC: H01L23/057
Filed: 1963-02-05
Abstract: 983,769. Semi-conductor devices. WESTINGHOUSE ELECTRIC CORPORATION. Feb. 5, 1963 [Feb. 13, 1962], No. 4598/63. Heading H1K. A semi-conductor device comprises a wafer of semi-conductor material lying in a depression in a mounting plate of rigid insulating material, the wafer being joined to the ends of conductors embedded in the plate which project into the depression. As shown, Fig. 2, a Hall effect device is manufactured by moulding a glass or ceramic plate 10 round conductors 22, 24, 26, 28 and simultaneously forming a rectangular depression 12. The ends of the conductors projecting into the depression are tinned using, for example, 63-37 lead-tin solder. A thin rectangular wafer 38 of indium arsenide is placed in the recess, a graphite weight 42 is placed on top of it, and the device is heated in an inert atmosphere to solder the conductors to the wafer 38. Weight 42 is then removed and the depression is closed with a cover plate 40 of the same material as the plate 10. As shown, Fig. 3, the ends of the conductors may be preformed to an L-shape and embedded in the plate 52 so that surfaces 48 and 50 of the preform are flush with surface 54 and edge 58 of the depression respectively. The invention is applicable to several kinds of device, the semi-conductor may be germanium silicon or a III-V or II-VI compound, and, a list of suitable solders is given.
Patent GB-943983-A (GB)
Title: Improvements in or relating to fasteners for conveyor and like belts
Inventor: NEALE LESLIE ARTHUR
IPC: F16G3/02
Filed: 1961-02-08
Abstract: 943,983. Belt fastenings. HAYDENNILOS Ltd. Jan. 30, 1962 [Feb. 8, 1961], No. 4624/61. Heading F2Q. In a belt fastening comprising a hinge pin 18, Fig. 2, connecting intermeshing U-shaped plates 1 secured to the belt ends by wire staples 7, Fig. 1, the upper limb of each plate has holes for one or more staples which are secured thereto by force fitting or by welding and are pressed through the belt to engage and be bent over holes in the lower limb 2. The limbs 1, 2 are corrugated or grooved to provide channels in which the bases 8 and bent points 10 can lie. As shown the end 6 of the upper limb 1 is bent to position the points 10 correctly before insertion into the belt, insertion being progressively effected in three stages by shaped pressing blocks as described in Specification 943,984. Each plate has its hinge-engaging portion 3 half the width of its belt engaging portion 6. In one form the plate has two narrow hinge portions which are corrugated so that a curved cross-section engages the hinge pin.
Patent GB-576293-A (GB)
Title: Vinyl halide polymer and copolymer stabilization
IPC: C08K5/31
Filed: 1944-03-13
Abstract: Vinyl halide resins are stabilized by adding to the resin aminoguanidine or a salt thereof.  Specified resins are polyvinyl chloride, bromide or iodide and copolymers of at least ten per cent vinyl halide and one of the following: vinylidene halide, a maleate, a chloromaleate, a fumarate, a chlorofumarate, an ester of another alpha, beta unsaturated polycarboxylic acid, vinyl acetate, other vinyl esters, styrene, an acrylate, or a substituted acrylate. Specified fumarates are the dimethyl, diethyl, dipropyl, dibutyl, diisobutyl, dihexyl, ditetrahydrofurfuryl, and dibenzyl fumarates. Specified salts are the sulphate, nitrate, acetate, hydrochloride and bicarbonate.  The preferred proportion of stabilizer is from 0.2 to 10 per cent.  A plasticizing agent, e.g. dibutyl sebacate may also be present.  In examples: (1) a vinyl chloride/diethyl fumarate copolymer plasticized with dibutyl sebacate is stabilized with (a) the sulphate, (b) the nitrate, (c) the hydrochloride, and (d) the acetate, of aminoguanidine; (2) a vinyl chloride/diethyl maleate copolymer, and (3) a vinyl chloride/vinylidene chloride copolymer are stabilised with (a) aminoguanidine and (b) its sulphate.  Films of the resins may be so stabilised.
Patent GB-242838-A (GB)
Title: Improvements in or relating to stack and like pipes for buildings
IPC: E04D13/08
Filed: 1925-02-20
Abstract: 242,838. Hopkins, M. J. Feb. 20, 1925. Guards for rain pipes.-A casing for rain pipes &c. designed to prevent climbing of the pipes consists of a metal casing or sheath A with sharp upwardly, outwardly or downwardly projecting portions B formed on it and adapted to cover a sufficient length of the pipe to make its avoidance by a climber impossible.
Patent GB-470425-A (GB)
Title: Improvements in or relating to cooking stoves
IPC: F24C15/10
Filed: 1936-02-15
Abstract: 470,425. Cooking-stoves. IMBER, J., and ALADDIN INDUSTRIES, Ltd. Feb. 15, 1936, No. 4677. [Class 126] A slidable tray e for carrying plates or other articles to be warmed is mounted between heating-elements (in the stove shown, oil lamps b) disposed beneath the hot-plate c of a cooking- stove. In the construction shown, the tray carries brackets f on which is mounted a wire rack h for carrying the plates. The tray is supported at the rear by rollers m running on guides d, and at the front by a leg k carrying a wheel l which runs on the ground. The hotplate is preferably as shown in Figs. 5, 7, comprising three cooking points o, p, q to the centre of which the hot gases are led by a trough or channel r below the hot-plate. The covers t of the end cooking-points carry depending partcircular flanges u forming dampers which coact with baffles x in the trough so that by rotating the covers the passage of the gases to the central cooking-point may be controlled. The covers are rotated by arms w extending from them into recesses v, which may be inclined so that when partially rotated the covers are lifted from their seats to increase the draught. To diminish transmission of heat, the rim of the hot-plate is connected to the central portion by air-spaced ribs 2.
Patent GB-574355-A (GB)
Title: Improvements in or relating to compositions and means for sealing leaks in radiatorsfor aircraft and vehicle engines
IPC: F02B77/00
Filed: 1943-03-24
Abstract: 574,355. Plastic-compositions. DICKSON, W., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. March 24, 1943, No. 4776. [Class 70] Leaks in radiators of aircraft and vehicle engines are sealed off by means of a composition consisting of a binding material capable of swelling uniformly in all directions in contact with water, and a filler the composition being maintained against and pressed into the airways into which leakage is occurring by means of rigid face plates. The binding-material for the composition comprises glue, uncured casein, broken down starch, or the like, and a plasticiser therefor, such as glycerol or other polyhydric alcohol, may be added. The filler consists of finely powdered wood meal, wheat flour, starch, or the like or an inorganic material such as china clay, kieselguhr, or asbestos. The materials are mixed into a paste with water, dried if necessary, extruded into rod or strip form, and stored in a damp atmosphere. In use, lengths of the composition are placed over - the airways 2 of the radiator into which water is leaking from the water passages 1 and clamped into position by rigid front and rear plates 5 by a rod 10 extending through the airways. The plates are provided with V-shaped grooves to register with the edges of the waterways, the grooves being slightly deeper than the distance that the waterways extend beyond the airways. If desired, the grooves may be filled with the composition before the plates are applied.
Patent GB-568793-A (GB)
Title: Improvements in or relating to the production of pre-cast balusters, pilasters and the like
IPC: B28B7/00
Filed: 1943-03-24
Abstract: 568,793. Balusters. WHATLING, J. L., and DOCHERTY, J. K. March 24, 1943, No. 4786. [Class 45] [Also in Groups V and X] A pre-cast ornamental building unit having base and cap enlargements 20, 21 with flat faces to be bedded against structural components above and below, is characterized in that it has a flat rear face 18. Each side face is formed, adjacent the flat rear face, with a laterally - projecting ridge 19 that follows generally, but in simplified outline the decorative form of the side faces. As shown, the unit is substantially rectangular in cross-section, but may be substantially circular. A mould for making the unit comprises an open-topped box 10 having inclined inner faces (to facilitate removal of the inverted mould from the unit) and lining pieces 11 ... 15. The piece 15 is fixed to the base of the box, but the pieces 11 ... 14 are loose therein. In use, the box is filled with concrete, excess is scraped off, a pallet board 16 is applied to close the box, and the box is inverted and lifted off, the moulded unit being left on the pallet to harden.
Patent GB-525125-A (GB)
Title: Improvements in or relating to hair brushes
IPC: A45D24/18
Filed: 1939-02-14
Abstract: 525,125. Brushes &c. CELLULOID CORPORATION. Feb. 14, 1939, No. 4824. Convention date, Feb. 19, 1938. [Class 19] A hair brush comprises a stock 7 with bristles 8 on one face and a handle 9 attached to the other face, and in the handle a slot 11 extending along its length to accommodate a, comb 12, with its teeth parallel to the bristles. The slot 11 may be tapered upwardly or downwardly. The stock and handle may be of wood, metal or rubber, but a thermoplastic material is preferred, such as an organic ester .of cellulose or a cellulose ether. Alternatively a celluloid with a nitrocellulose base, a phenol condensation product, casein, urea and formaldehyde and other resins or synthetic rubber may be used.
Patent GB-1423304-A (GB)
Title: Control device for respiratory apparatus
IPC: A61M16/00
Filed: 1973-01-31
Abstract: 1423304 Control for respiratory apparatus KOMBINAT MEDIZIN-UND-LABORTECHNIK VEB 31 Jan 1973 4890/73 Heading AST A control device for respiratory apparatus comprises a counter 8 for counting normal breath pulses, which counter 8 actuates means for effecting deepened breathing after a given number of normal pulses, a counter 9 for counting deepened breath pulses, which counter 9 actuates means for effecting return to normal breathing after a given number of deepened breath pulses, and means for actuating the means for effecting deepened breathing immediately at any point in the breathing cycle, the said given numbers of pulses being independently selectable. The counters 8, 9 control a bi-stable multivibrator 7 which controls a switch 6 and an AND gate 10 for connecting or blocking input pulses from respiratory apparatus 20 to a regulator 2 for carrying out deepened breathing. A switch 13 enables triggering of the multivibrator 7 through an OR gate 12 to start deepened breathing immediately, and a switch 17 controls an adjusting element 19 for controlling the maximum pressure during deepened breathing. Signal shapers 14 and 15 are used to reset the counters 8, 9 respectively on switching of the multivibrator 7. The counters 8, 9 may be timing circuits.
Patent GB-1242358-A (GB)
Title: Butanediol preparation
Inventor: LOW FREDERICK GARDNER
IPC: C07C29/17
Filed: 1970-02-02
Abstract: 1,242,358. 1,4-Butanediol. E. I. DU PONT DE NEMOURS & CO. 2 Feb., 1970 [31 Jan., 1969], No. 4936/70. Heading C2C. [Also in in Division C7] 1,4-Butanediol is prepared by hydrogenating a mixture of 2-butyne-1,4-diol in the presence of a 1-14 mesh (U.S. Sieve Number) granular, foraminous, Ni-Al catalyst which has been activated by removing 5-30% of the Al from a Ni-Al alloy consisting essentially of 35-60% by wt. of Ni and 40-65% by wt. of Al. The process may be operated continuously with recycling of a major portion of the reactor effluent to the reactor with removal of heat from the reactor stream. Alkali is preferably added to the reactants to maintain a pH of 6À5-8 at the reactor exit. The inlet temperature may be increased as reaction proceeds to maintain an acceptable level of butenediol in the products. A second hydrogenation stage may be employed to reduce any butenediol to butanediol.