baber/WOPTO huggingface dataset:
Patent GB-253687-A (GB)
Title: Improvements in telephone receivers, sound reproducers and like instruments
IPC: H04R7/12
Filed: 1925-05-14
Abstract: 253,687. Mullaly, P. J., and Pirie, M. V. May 14, 1925. Diaphragms; loudspeakers. - Sound-reproducing diaphragms for telephone receivers, gramophones &c., are built up of two or more cones or pyramids fitted together coaxially, their apices, which lie in the same direction, being joined together and connected by a screw or the like to an armature or equivalent vibratory member. The invention is shown as applied to a telephonic loud-speaker. Cones 6, 7 of paper. metal foil. thin wood &c., have their apicies connected together and to the armature of an electro. magnet 5 by a screw 10, an interposed button 11 of wood &c. being provided. The peripheral edges of the cones are joined together, and may be otherwise free, or may be lightly attached to the front 2 of the instrument casing, e.g. by tissue paper, or, as shown, by means of two strips 9 of adhesive paper or linen. The cabinet has a removable back 3 on which the electromagnetic device is mounted, and the front 2 is " openwork."
Patent GB-844597-A (GB)
Title: Preparation of 3,3,3-trifluoropropene
IPC: C07C17/00
Filed: 1959-04-14
Abstract: 3,3,3-Trifluoropropene is prepared by contacting, for at least 0/m15 seconds at a temperature above 150 DEG C. and in the presence of a chromium oxyfluoride catalyst, at least a 3/m10 to 1/m10 mole ratio of hydrogen fluoride and a three carbon atom halogenated hydrocarbon containing 3 or 4 hydrogen atoms and 3 or 4 halogen atoms other than iodine, not more than 2 of which are fluorine, one terminal carbon atom containing no hydrogen thereon.  A minimum reaction temperature of 225 DEG C. is preferred.  Specified starting halohydrocarbons are 3,3,3-trichloropropene, 3,3,3-tribromopropene, 3,3-dichloro-3-bromopropene, 1,1,1,3-tetrachloropropane, 1,1,1,3-tetrabromopropane, 3,3-dichloro-3-fluoropropene, 3,3-dibromo - 3 - fluoropropene, 3 - bromo - 3,3 - difluoropropene, 3 - chloro - 3,3 - difluoropropene, 1,1,3 - trichloropropene - 1,1,1-dichloro - 3 - bromopropene - 1,1,3 - dichloro - 1,1 - difluoropropane and 1,1,1-trichloro-3-bromopropane.  The catalysts used may be those of Specifications 790,335 and 821,211.
Patent GB-485604-A (GB)
Title: Improvements in photographic sensitive emulsions
IPC: G03C1/18
Filed: 1936-09-15
Abstract: 2 : 21 - Diethyl - 8 - methyl - 5 : 6 - benzoxathiacarbocyanine iodide is prepared by condensation of 1-acetylmethylene-2-ethylbenzthiazoline with 1 - methyl - a  - naphthoxazole ethyl - p - toluenesulphonate, 8 - ethyl - 2 : 21-dimethyl - 3 : 4 - benzoxathiacarbocyanine iodide by condensation of 2-methyl-1-propionylmethylenebenzthiazoline with 2-methyl-b  - naphthoxazolemethyl - p - toluenesulphonate 8 - ethyl - 2 : 21 - dimethyl - 31 : 41 - benzoxathiacarbocyanine iodide by condensation of 1 - methyl - 2 - propionylmethylene - b  - naphthathiazoline with 1-methylbenzoxazole methiodide, 21 : 8 - diethyl - 2 - methyl - 31 : 41-benzoxathiacarbocyanine iodide by condensation of 2 - ethyl - 1 - propionylmethylene - b  naphthathiazoline with 1-methylbenzoxazole methiodide, 2 : 21 - diethyl - 8 - methyl - 5 : 6-benzoxaselenacarbocyanine iodide by condensation of 1-acetylmethylene-2-ethylbenzselenazoline with 1-methyl-a -naphthoxazole ethyl-p-toluene sulphonate, and 8-ethyl-2 : 21-dimethyl - 5 : 6 - benzoxathiacarbocyanine iodide by condensation of 2 - methyl - 1-propionylmethylenebenzthiazoline with 1-methyl - a - naphthoxazole methyl - p - toluenesulphonate.  2 - Methyl - b  - naphthoxazole methyl- and ethyl-p-toluenesulphonates are prepared by heating 2-methyl-b -naphthoxazole with methyl- or ethyl-p-toluenesulphonate.
Patent GB-709644-A (GB)
Title: Improvements in air inlet devices for furnaces
Inventor: CRAKER GEORGE
IPC: F23L9/00
Filed: 1951-05-30
Abstract: 709,644. Air supply for combustion. HYDROTHERMAL, Ltd. May 28, 1952 [May 30, 1951], No. 12732/51. Class 51 (1) A secondary air preheater adapted to be fixed to the inside of a furnace door or wall comprises a hollow body 2 formed with external heat conducting fins 6 and vertical ribs 9 the latter being provided with outlet openings 8 for discharging heated air into the furnace. The outer face of the door or wall is provided with a controllable air inlet element which admits a regulated amount of air to the interior of the body 2. The ribs 6 may radiate outwardly from the face flange 3 and they may be of solid or hollow construction. When of the latter type they may be opening into the body, Fig. 5, or box-like with an inlet or inlets from the body, the furnace or atmosphere, or even adapted to furnish an enclosed space. Any box-like fin may have one or more outlets to the body or the furnace. The top of the body may be domed as at 4 and may be provided with external fins in place of or in addition to those shown at 6. The fins may have secondary fins or ribs, and may be corrugated or otherwise shaped to increase the conductive surfaces.
Patent GB-647201-A (GB)
Title: Improvements relating to automatic tuning mechanism for radio receivers or the like
IPC: H03J5/10
Filed: 1947-05-13
Abstract: 647,201. Adjusting radio apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 13, 1947, No. 12843. Convention date, May 13, 1946. [Class 40 (v)] Automatic station-selecting mechanism for radio apparatus comprises a rotatable member having a plurality of stops angularly-spaced about the axis of said member and adapted to be disposed at different radial distances from said axis, a follower arranged to coact successively with the stops to adjust the tuning of the radio apparatus, and manually actuatable means for rotating the rotatable member in step-wise manner. As shown in Figs. 1 and 2 the movable cores 9 of the coils 8 are attached to a carriage 10 provided with a cam surface 23 and sliding on supports 16, 19. A turret 26 is provided with a number of angularly-spaced lead-screws 36 carrying adjustable stops 41, and may be rotated step-by-step through a ratchet-andpawl mechanism, 45, 47, connected by a pin and slot to a spring-loaded sliding member 52 operated by pushing in the finger-piece 53. The cam 23, which is provided with a tension spring 20 attached to the frame 3, co-operates with the stops 41 to adjust the position of the tuning cores 9, and a bell-crank 62 operated by a dog 70 pivotally mounted on the sliding member 52 alternately locks the turret at each position and releases it to move to the next position. The turret moving and locking mechanism is shown in detail in Figs. 3 and 4 (not shown).
Patent GB-787164-A (GB)
Title: New acyl hydrazones
IPC: C07C49/613
Filed: 1956-04-26
Abstract: The invention comprises acyl hydrazones of the formula R-NH-N = R1 wherein R is an acyl radical of a carboxylic acid, R1 is a diene quinone mono-adduct, linked to the hydrazono nitrogen atom by replacement of one oxygen in the quinone system. The products are made by reacting the diene-quinone adduct with a carboxylic acid hydrazide, preferably in an aqueous or aqueous-alcoholic medium at 0-70 DEG  C.  The quinone-diene adducts are, for example, the adducts of butadiene, isoprene, 2:3 - dimethylbutadiene, 2 - chlorobutadiene, cyclopentadiene or cyclohexadiene with p-benzoquinone or p-naphthoquinone.  The acyl hydrazides may suitably be hydrazides of acetic, adipic, benzoic, pyromucic or isonicotinic acid.  Products obtained from basic acyl hydrazides, e.g. from pyridine-carboxylic acid hydrazides may be isolated either as the free bases or as their acid addition salts. Examples describe the preparation of the N1-benzoyl-, N1-pyromucyl- and N1-isonicotinyl-, derivatives of 5 : 8-endomethylene - 4a:5:8:8a - tetrahydro - 1:4-naphthoquinone-hydrazone; and the N1-isonicotinyl derivatives of 4:5:8:8a-tetrahydro1:4 - naphthoquinone - hydrazone, 1:4 - endomethylene 1 : 4 : 4a : 9a - tetrahydroanthraquinone-hydrazone and 1:4:4a:9a-tetrahydroanthraquinone-hydrazone.
Patent GB-556849-A (GB)
Title: Improvements in a vibration damper
IPC: F16F15/129
Filed: 1942-09-12
Abstract: 556,849. Torsional-vibration dampers. FORD MOTOR CO., Ltd. Sept. 12, 1942, No. 12890. Convention date, Sept. 20, 1941. [Class 108 (iii)] [Also in Group XXVI] A flexible flywheel, which is adapted for damping both torsional and transverse vibrations of an engine crank-shaft &c. comprises a heavy ring 18, which is fixed to the shaft 14 by a spoked driving disc 26 of relatively thin steel, and a friction spider 28 also fixed to the shaft and having the outer ends 39 of its arms in rubbing contact with the face of the ring 18. The flexible nature of the disc 26 permits the wheel to be unaffected by transverse deflections or wobbling of the shaft, and the spokes of the disc are sufficiently narrow to permit of a certain amount of torsional flexure between the flywheel and the shaft. The rubbing of the arms of the spider circumferentially and radially on the face of the ring 18 tends to damp out both torsional and transverse vibrations. A retaining-disc 29 of small diameter bears on the face of the ring opposite to that on which the disc 26 and the spider are located. When the parts are assembled, the driving disc is flat and the spider is forced into a dished formation.
Patent GB-225779-A (GB)
Title: Process of educting valuable ingredients from ores and other minerals
IPC: F27B7/32
Filed: 1924-05-26
Abstract: 225,779. Hedges, E. E. May 26 ,1924. Treating ores to remove volatile constituents; distilling metals.-Ores are subjected in a closed retort to the action of superheated steam at a temperature above the volatilization point of certain constituents, in such a manner that agitation of the material and its passage through the steam are effected by positively lifting it and allowing it to fall through the steam. The apparatus shown comprises a rotary retort 10, which m'ay be inclined, fittefd internally with ribs 15, ore being fed through a passage 17 which passes through a condenser 21, and steam being supplied through a pipe 29, preferably branched within the retort. The condenser is discharged by means of a door 23, means 24 being provided for cutting off communication between the retort and the door 23 during discharge.
Patent GB-475036-A (GB)
Title: Improvements relating to the cooling of internal combustion engines
IPC: F01P1/06
Filed: 1936-05-07
Abstract: 475,036. Cylinders. BAILEY, R. W., and METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. May 7, 1936, No. 12956. [Classes 7 (i) and 7 (ii)] In an opposed-piston engine which generates combustion products for use in a prime mover, as described in Specification 232,278, [Class 7 (i)], the combustion chambers are cooled by compressed air, subsequently forming the charge, which is forced through passages extending round the combustion chamber. A two-stroke engine is shown in which extensions 4, 4<1> of the pistons restrict the combustion chamber to a lateral part 5. having opposed exhaust valves 6. Piston-controlled tangential inlet parts 7, 71 are fed from telescopic or flexible branched passages 13, 13<1> by a casing 17 extending round the combustion chamber, heat exchange ribs 16 being provided. Sheets 19, 20 of heat resisting steel or alloy-e.g. calorized steel-are fixed to the walls of the combustion chamber and inlet passages, which may be grooved, to reduce contact area. The extensions 4, 4<1>, which are insulated from the pistons by stacks of steel plates 21, may be screwed to the pistons by continuous or interrupted buttress threads. In a modification, inlet and exhaust ports, at opposite ends of a cylinder, are uncovered by the respective pistons and the charge is forced round the central part of the cylinder which forms the combustion chamber. In a four-stroke engine, opposed inlet and exhaust valves are arranged at the side at which the charge, before circulating round the combustion chamber, is introduced. One side wall of the passage connecting the combination chamber and the cylinder is formed as a baffle to whirl the charge. The parts may be welded together.
Patent GB-454548-A (GB)
Title: Improved electrode system for rectifying or controlling high-or intermediate frequency oscillations
IPC: H01L29/00
Filed: 1936-05-07
Abstract: 454,548. Wireless receiving-apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. May 7, 1936, No. 12966. Convention date, July 30, 1935. [Class 40 (v)] In a detector comprising two electrodes separated by a thin insulating layer, one at least of the electrodes is formed from a liquid mass in such a way that its surface in contact with the insulating layer has a small predetermined area dependent on the desired capacity of the system. In Fig. 1, a negative electrode 1 of cuprous sulphide on a brass support 2 is provided with an insulating coating 3 of polystyrene to which a quartz tube 4 adheres. The tube is filled with a metal suspension, e.g. platinum in alcohol, a colloidal graphite solution or a solution of a metal compound, and the solid electrode 7 is formed by evaporation of the suspension agent or solvent. The tube 4 may then be removed if desired. In Fig. 2, the negative electrode is formed from a measured quantity 9 of liquid selenium which on cooling is coated with a layer 10 of polystyrene. To this is applied a drop 11 of Rose's metal in which a supply conductor is immersed. In Fig. 3, graphite 14 occupies the greater part of the bore of a steatite bead 13, and the cavity above the graphite is filled with liquid selenium 15. The bead is coated with a layer 17 of polystyrene to which is applied a measured quantity of Wood's metal 18. Alternatively each electrode may be mounted in a bead, the two beads being secured together by the polystyrene layer. A grid-shaped control electrode may be inserted in the insulating layer in each embodiment.
Patent GB-792295-A (GB)
Title: Improvements in or relating to snap-action electric switches
Inventor: MCGOWAN ERIC
IPC: H01H37/46
Filed: 1955-05-04
Abstract: 792,295. Thermal switches; snap-action switches. BRITISH THERMOSTAT CO., Ltd. Aug. 1, 1956 [May 4, 1955], No. 12974/55. Class 38 (5). In a switch employing a spring blade with outer limbs 4 anchored at one end at 2 and an integral centre leaf 5 secured to the free ends of the limbs 4, with a C-spring 12 disposed between knife-edges on the free end of the leaf 5 and the anchored ends of the limbs 4, an adjustable stop 15 acts on the centre leaf 5 at its junction point with the limbs 4, whereby an upward force applied by a plunger 14 to the leaf 5 allows the C-spring to close the contact 6 on the free end of leaf 5 on to a fixed contact 7, the force excited by the C-spring progressively diminishing towards the closed position. When the operating force is removed, the blade reassumes the position shown against a stop 16. In Figs. 4, 5, the switch is shown closed, the force-transmitting plunger 23 being actuated through a forcemultiplying lever 22 by a differentially-expanding rod-and-tube thermostat 17, 18, which is inserted in a metal sleeve 20 fixed to a bush 19 having a groove receiving a spring clip 21 on the switch body. The adjustable stop comprises a rod 31 against a head 32 on which indentations 33 on the blade are urged by a spring plunger 34. The rod 31 threadedly engages a fixed bridge 36 and carries an adjusting knob 37 formed with a saw-cut 39.
Patent GB-861818-A (GB)
Title: Improvements in or relating to 2:5- dimethanesulphonoxyhexane
Inventor: BROWN STANLEY SIDNEY
IPC: C07C309/66
Filed: 1958-04-24
Abstract: The invention comprises racemic 2:5-dimethanesulphonoxyhexane, and the preparation thereof by reacting racemic 2:5-hexanediol with methanesulphonyl chloride, or esterifying a mixture of racemic and meso 2:5-hexanediol with methanesulphonyl chloride and separating the racemic isomer, which has the lower melting-point.
Patent GB-138002-A (GB)
Title: Improvements relating to the manufacture of salts of ammonia
IPC: C01C1/24
Filed: 1919-05-24
Abstract: 138,002. Amsterdamsche Superfosfaatfabriek. Feb. 10, 1919, [Convention date]. Ammonium nitrate; ammonium salts in general; ammonia.-Ammonia is absorbed in a salt solution such as ammonium nitrate in a cooled absorber a, the exit gases being washed in absorbers b and i in series with a. The liquor from a passes through a store tank c to a vat e in which acid such as nitric acid from a. tank d is added to neutralize it. The neutralized liquor is drawn off by a pump f, and a part is sent to an evaporator by the connexion shown, while the rest passes through a cooler g to a tank h which supplies the absorbers i, b, a.
Patent GB-611457-A (GB)
Title: Improvements relating to electrical fused plugs
IPC: H01R13/68
Filed: 1946-05-01
Abstract: 611,457. Two-part couplings combined with fuses. SANDERS & CO. (WEDNESBURY), Ltd., W., and BAYLISS, G. H. May 1, 1946, No. 13112. [Class 38 (i)] In a fused plug connector, a cartridge fuse lies in semicylindrical contacts formed in the heads of a contact pin and of a terminal, and is held in position by being clamped by the cover. The line pin 7 has a contact head with a semicylindrical recess 7b fitting into recess 5b of the fuse. In line with the pin is a terminal 8 with recessed head 8a fitting into recess 5c of the base. An insulating sheet 12 is held by screws 13 within a flange 5h on the base and serves to hold the contacts in position, whilst a slot 12a enables a fuse 9 to contact the recesses 7b and 8a. A cover 51 when secured to the base by semi-captive, spring- loaded screws 14, holds the fuse in position. A cord grip 11 is also provided. The neutral pin 6 and earth pin 10 which are of conventional design are mounted in recesses 5a, 5f respectively. Reference has been directed by the Comptroller to Specification 609,337.
Patent GB-823111-A (GB)
Title: Improvements relating to the protection against oxidation of articles of molybdenum or molybdenum base alloy
IPC: C23C4/00
Filed: 1956-04-30
Abstract: 823,111. Turbine blades. GENERAL ELECTRIC CO. April 30, 1956 [May 11, 1955], No. 13203/56. Class 110 (3). [Also in Group XXII] In protecting a turbine blade of molybdenum or molybdenum base alloy a first metallic oxidation resistant coating is applied to the blade, a second metallic oxidation resistant coating having a greater resistance to impact, abrasion and erosion than the first coating is applied to at least part of the coated blade and the second coating is secured to the blade by fusing the first coating. A molybdenum gas turbine blade 1 is cleaned by electro-polishing to a mirror finish then roughtened by grit blasting and then reducing flame sprayed with a nickel-siliconboron alloy 6 to a thickness of 0.005 inch. The blade is then heat treated in a hydrogen furnace by preheating to 1500-1900‹ F. when partial sintering takes place between the sprayed particles, by heating to 2100‹ F. to melt the sprayed coating and by cooling in the hydrogen atmosphere. At least the area of the coating 6 to be further coated is cleaned with emery cloth and carbon tetrachloride or by vapour blast and vapour degreaser. A foil 7 0.003- 0.006 inch thick of 80% nickel, 20% chromium or 78% nickel 15% chromium 7% iron is shaped to the blade and held in position thereon between shaped forms 10, 11 by clamps 15, 16 to cover an area bounded by lines 8 and 9. The assembly is preheated at 1500-1900‹ F. in a hydrogen furnace and is then heated to 2150‹ F., at or above the melting point of the first coating, to melt the first coating which bonds the foil to the blade. After fusing the blade is cooled in the hydrogen atmosphere. The second coating may be surface hardened by cleaning, painting with aluminium and then heating to 1800‹ F. in a reducing atmosphere for 1-4 hours.
Patent GB-660165-A (GB)
Title: Improved copolymeric vinylidene chloride compositions
IPC: C08K5/134
Filed: 1949-05-18
Abstract: A composition consists of from 88 to 96 per cent by weight of the copolymer containing from 88 to 94 per cent of vinylidene chloride copolymerized with from 12 to 6 per cent of vinyl chloride, and from 4 to 12 per cent in the aggregate of the following modifiers: (1) from 1 to 4 per cent of 3-(2-xenoxy)-1,2-epoxy propane, (2) from 1 to 4 per cent of 41-tertiary-butyl phenyl salicylate, and (3) from 1 to 4 per cent of dibutyl sebacate free from sebacic acid and from monobutyl sebacate.
Patent GB-475054-A (GB)
Title: Improvements in and relating to the construction of maps from photographs taken from the air
IPC: G01C11/00
Filed: 1936-05-11
Abstract: 475,054. Photogrammetric apparatus. FOURCADE, H. G. May 11, 1936, No. 13340. [Classes 97 (i) and 97 (ii)] A double projecting system for constructing maps from pairs of aerial photographs by coincidences of the projected images is provided with an automatic focusing system. In the form shown a horizontal beam a carrying lanterns i, photograph holders h, lenses k, and mirrors l for reflecting the projected images on to the table r may be slid on vertical uprights b by operating the handle f geared to two lead screws c. The mirrors l are at a distance apart equal to the horizontal distance between the two air stations on the scale of the map to be drawn. The photograph holders h are slidably mounted on the beam a by means of rollers and are drawn outwards by cords n<1> and counterweights n<11> until rollers o on distance pieces n abut against rulers p. The latter are pivoted at points q on the uprights b and are maintained by straps t<11> in contact with rollers t carried by the beam a. The relative positions of the table r, pivots q, and rollers t, are so chosen that, when the beam a is raised or lowered to cause pairs of rays defining points at different levels in the terrain to intersect on the table r, the rulers p are rocked and the photograph carriers h consequently adjusted to keep the images sharply focused on the table. One lens k is adjustable along the beam a so that its distance from the mirror l may correspond to the difference between the heights of the two air stations and the corresponding pivot q may be adjusted vertically through an equal distance.
Patent GB-1307999-A (GB)
Title: Process for the application of finishing agents to knitted materials
IPC: D06B9/00
Filed: 1970-03-19
Abstract: 1307999 Finishing textiles RIMAR SpA 19 March 1970 [20 March 1969] 13343/70 Heading D1P A process for the application of finishing agents dissolved and/or dispersed in a polar organic solvents to knitted material comprises (i) pre-washing the knitted material with an apolar organic solvent, (ii) removal of solvent from the prewashed material (iii) treating the material with a solution and/or dispersion of the finishing agent and (iv) drying the material in a hot-air stream at 40-110‹C for 10-40 mins. Examples of the finishing agents used are polymers containing perfluorinated chains to impart oil-repellent characteristics, polyisocyanates to impart non-shrinking characteristics, softening agents anti-static agents and products capable of condensation at the time they are applied e.g. urea formaldehyde hexamethylol melamine-stearoyl chloride. The material made of natural or synthetic fibres e.g. wool, acrylic and cotton is preferably prewashed with a chlorinated apolar solvent 5-15 times the weight of the knitted material in two stages at different speeds. The solvent is removed in two stages by centrifuging at different speeds. The ratio by weight of the finishing solution and/or dispersion to the knitted material may be between 1.2-5:1 and it may be sprayed on the material under pressure. The knitted material may be subjected to a further heat-treatment after drying at 80-150‹C for 5-25 mins. Preferably, the process is completed by deodorizing the treated material, in order to remove last traces of solvent, by circulating an air-stream through the apparatus for 1-4 mins.