baber/WOPTO huggingface dataset:
Patent GB-784782-A (GB)
Title: Improvements in or relating to processes for the production of selenium rectifiers
IPC: H01L21/10
Filed: 1954-02-10
Abstract: 784,782. Plate rectifiers. SIEMENSSCHUCKERTWERKE AKT.-GES. Feb. 10, 1954 [Feb. 10, 1953], No. 3963/54. Drawings to Specification. Class 37. A selenium rectifier is produced by building up the selenium in plurality of layers, each layer including as a first additive a halogen, or halogen compound which increases the conductivity of the selenium and the layer adjacent the barrier layer (and if more than two layers are involved, the next adjacent layers excepting one or more of the last layers) also including a second additive such as thallium, which promotes the formation of the barrier layer, the quantity of the second additive in each layer progressively increasing in the direction approaching the barrier layer. The first addition may consist of C1, I, Br, Se 2 Cl 2 , Sa 2 Br 2'  SeCl 4  or SeBr 4  and the second additive of Sb, Bi, Sn, Tl, In, Ga, Cd, Cu, Pb, As or S, or alloys or compounds thereof. The presence of the second additive will reduce the conductivity of the layer, but this may be compensated for by increasing the quantity of halogen. The second layer may be applied before or after the first layer has been rendered crystalline. Before applying the counter electrode, which may consist of Bi, Sn, Cd or alloys thereof. an additional layer of CdSe, CdS or SeO 2  may be applied.
Patent GB-1292446-A (GB)
Title: Control panel illumination
Inventor: WERDA KONRAD
IPC: B60Q3/04
Filed: 1969-01-24
Abstract: 1292446 Motor vehicle dashboards JOSEPH LUCAS (INDUSTRIES) Ltd 19 Jan 1970 [24 Jan 1969] 4048/69 Heading B7H An illuminated control panel, e.g., for a motor vehicle, comprises a support 12 carrying switches 13 and front and rear transparent or translucent panels 11 and 14, respectively. The front panel 11 is rendered opaque, e.g. by black paint apart from the area surrounding switches 13 and a control 15. Festoon bulbs 16 have reflectors 18 which illuminate panel 14 throughout its length and serve as heat shields.
Patent GB-215289-A (GB)
Title: Improvements in or relating to spring placquets for eye-glasses and the like
IPC: G02C5/12
Filed: 1924-02-18
Abstract: 215,289. Barnes, E. Feb. 18, 1924. Eyeglasses.-The resiliency of spring placquets for eyeglasses is adjusted by varying the position of the spring. The spring is flexible in all directions at right angles to its length and its resiliency is determined by the position of the rigid body. Several examples are described in the Specification. In one example, Figs. 1 and 2, the flexibility of the spring placquet A is modified by several rigid bodies B enveloping portions of its length as shown. The spring A is doubled to provide a loop at one end, and free ends at the other. One of the rigid bodies B' is double to carry elastic cushions E, Fig. 8, comprising a stud provided with a coiled spring F. In other modifications all the rigid bodies embrace both parts of the spring A. In a further example, Figs. 11 and 12, the placquet is curved at the central portions and one of the rigid bodies envelopes also a separate spring member J clamping it to the spring at the curved central part. The spring member J extends in both directions and is fitted with elastic cushions. The rigid bodies instead of enveloping the springs may be enclosed thereby.
Patent GB-621289-A (GB)
Title: Improvements in and relating to the preparation of sulphonamide derivatives
IPC: C07D241/44
Filed: 1947-02-13
Abstract: Quinoxalyl sulphanilamides substituted in the quinoxalyl nucleus by an alkyl group of not more than five carbon atoms are prepared by treating the corresponding halogen or amino derivatives of quinoxaline with sulphanilamide or an acyl sulphanilyl halide respectively, and in the latter case hydrolysing the product to remove the acyl group.  The preferred compound is N1-(31-methyl-21-quinoxalyl) sulphanilamide.  In examples: (1) 2-chloro-3-methylquinoxaline, prepared from 2-hydroxy-3-methylquinoxaline by treatment with phosphorus oxychloride, is reacted with sulphanilamide in the presence of potassium carbonate and copper powder to give N1-(31-methyl-21-quinoxalyl) sulphanilamide; (2) 2-amino-3-methylquinoxaline prepared by treating 2-chloro-3-methylquinoxaline with ammonia is reacted with acetylsulphanilyl chloride and the product is hydrolysed to give the product of (1); (3) and (4) 2-amino-5-methylquinoxaline is reacted with acetylsulphanilyl chloride and the product hydrolysed to give N1-(51-methyl-21-quinoxalyl) sulphanilamide; and (5) 2-chloro-5-methylquinoxaline is reacted with sulphanilamide in the presence of potassium iodide, potassium carbonate and copper powder, to give N1-(51-methyl-21-quinoxalyl) sulphanilamide. 2-Amino-5-methylquinoxaline is prepared by reducing 3-nitro-2-aminotoluene, reacting the product with diethylmesoxalate monohydrate to give 2-hydroxy-3-carbethoxy-5-methylquinoxaline, which is hydrolysed to 2-hydroxy-5-methylquinoxaline-3-carboxylic acid, heated to give 2-hydroxy-5-methylquinoxaline, reacted with phosphorus oxychloride to give 2-chloro-5-methylquinoxaline and treated with ammonia to give the required product.  The 2-hydroxy-5-methylquinoxaline may also be prepared by treating 3-nitro-2-aminotoluene with bromoacetic acid in the presence of zinc chloride to yield N-(2-methyl-6-nitrophenyl) glycine, which is converted into 2-hydroxy-5-methylquinoxaline by the action of tin and hydrochloric acid.
Patent GB-767724-A (GB)
Title: "improvements in or relating to devices for detecting the passage of railway vehiclewheels"
IPC: B61L1/16
Filed: 1954-02-12
Abstract: 767,724. Detecting passage of railway vehicle wheels. SIEMENS & GENERAL ELECTRIC RAILWAY SIGNAL CO., Ltd., AUSTIN, T. D., and RIDDLE, H. J. N. Feb. 9, 1955 [Feb. 12, 1954], No. 4217/54. Class 105. [Also in Group XXXVI] For detecting the passage of railway vehicle wheels, particularly at speeds of less than 1 m.p.h. a gap in the track rail is included in a magnetic circuit so that as a wheel passes there arises a substantial variation in the magnetic flux conditions which can be used for control purposes as by the generation of impulses in a pick-up coil or by use of the " Hall effect ". The magnetic field across the gap is produced by one or more permanent magnets and the pick-up coils are mounted on flux-carrying cores, in whole or in part bridging the gap. Eight different arrangements of magnets in relation to the rails are described using a gap in a single rail and eight employing gaps in both track rails and in each case a curve showing the variation of flux in the gap on the passage of a wheel is provided. As shown in Fig. 5 (Provisional), a double (opposed) magnet 12 symmetrically spaces the gap 1 between the rails 2 and 3 and the gap is bridged by a core 11 carrying a pick-up coil 7. The magnet may be curved with its polar ends contacting the rails. The flux variation in the gap on passage of a wheel is shown in Fig. 5a. The equivalent practical equipment comprises a straight double (opposed) magnet 59, Fig. 18, disposed parallel to the rails 46 and symmetrically with respect to the gap between the rails on a pair of aluminium alloy brackets 58 by screws 60. The gap between the rails 46 is filled by an end post of non- magnetic material to prevent closure of the gap. The two rails are secured together by fish plates 51 of resin-bonded-wood type held in position by bolts 52 and nuts 53 which also hold adjacent one of the fish plates, a mounting plate 54 which supports laminated cores 55 carrying the pick-up coils 56, the latter being protected by a cover 57 of non-magnetic material through which only the end portions of the cores 55 project in proximity to the rail. All air-spaces and interstices are completely filled with a thermosetting compound under vacuum to render the pick-up units rugged and weatherproof.
Patent GB-691726-A (GB)
Title: Improvements in lubrication means for back axle and like gear systems
Inventor: BEADY THOMAS REDVERS
IPC: F16N7/18
Filed: 1952-02-19
Abstract: 691,726. Lubricating. EATON AXLES, Ltd. Feb. 19, 1952, No. 4357/52. Class 12 (iii). In back axle and like gear systems especially on vehicles such as fork-lift trucks and mobile cranes subjected to operation in reverse gear for long periods, the bearings are lubricated by means of an oil collector drum 2 and a scoop divided into two parts by a substantially horizontal partition 5 formed with a scraper portion 6 substantially tangential to the surface of the drum 2, each of the two edges of the scraper being effective to remove oil from the drum during rotation in one direction only. The scraper is longitudinally slidable in a housing and is pressed by a light spring 3 against the surface of the drum. At the rear of the partition 5 the scoop is divided by a vertical partition into two parts, each having an aperture through which the oil may be led to the bevel pinion bearings and the differential bearings. The drum rotates with the crown wheel and dips into the oil at the bottom of the differential gear casing.
Patent GB-138443-A (GB)
Title: Improvements in or applicable to mechanical furnaces for roasting ores
IPC: F27B5/14
Filed: 1919-02-22
Abstract: 138,443. Huntington, Heberlein, & Co., and Bingham, H. C. Feb. 22, 1919. Roasting-furnaces; air, supplying. - In a furnace with superposed hearths, the flues beneath the lowermost or muffle hearth are arranged concentrically, and are so connected that the heating. gases flow through adjacent flues in reverse directions. In one form of the invention, Fig. 2, two fire-places b, b' and two sets of flues are provided on opposite sides of a radial partition, and beneath these flues there may be similar sets for heating air, which can be supplied either to the heating- flues through apertures o or to the roasting-chambers through passages in the walls. When a single fire-place is used, the flues may be in two sets on opposite sides of a radial partition, or one set may be employed, each flue making a complete circuit of the central rabble shaft, Each fire-place has above it a charging-chamber in which the fuel is partly coked before it is fed to the grate.
Patent GB-511061-A (GB)
Title: Device for conveying film in stereo-photographic apparatus
IPC: G03B35/10
Filed: 1938-02-12
Abstract: 511,061. Stereo photographic apparatus. GOLDLUST, W., and KARLBURGER, R. Feb. 12, 1938, No. 4487. Convention date, Feb. 13, 1937. [Class 98 (ii)] In stereo-photographic apparatus, the film feed is so regulated that the space between a pair of pictures a, a, is utilized for one (or more) pictures b of successive exposures and that when such space is filled the film movement is automatically increased to that necessary to bring an unused part c of the film into position. The film feed is effected by a hand knob 1, on a spindle 1<1>, carrying a collar 2, having flexible prongs 3, 4, projecting from it. Coupling discs 6, 12, each with a gear wheel 8, 13 are loose on the spindle 1<1> and are selectively locked to it by engagement of either prong 3 or 4, with a notch 3<1> or 4<1> in a disc 6 or 12 according as the prong 3 engages a fixed semicircular track 5 or the prong 4 a similar track 16. The transmission ratio of the gearing 8, 9, 10, 11, is such that in a half-revolution of the knob 1 the film drum 7 is fed forward three picture intervals, while in the succeeding half revolution the gearing 13, 14, 15 feeds the drum 7, one picture interval. Another construction embodies an axially-sliding clutch for engaging the alternative gears, and a further construction, for a picture sequence in which three pictures can be placed between the successive pairs of stereoscopic pictures, embodies means by which alternative intermediate gear wheels are brought into engagement.
Patent GB-957231-A (GB)
Title: Process for dyeing and printing fibrous materials
IPC: D06P1/00
Filed: 1962-02-06
Abstract: Fibrous materials are dyed or printed with aqueous preparations containing phthalocyanine dyestuffs, which contain acidic groups imparting solubility in water and do not form covalent bonds with the fibrous material or with aminoplasts, and contain aminoplasts that are soluble or at least dispersible in water, and the material is then cured in the presence of an acidic catalyst.  The fibrous materials may be paper, leather or glass fibres or textile fibres of cellulose acetate, polyamide, polyurethane, polyacrylonitrile, polyesters or especially cellulose fibres such as spun rayon, linen or cotton.  The phthalocyanine dyestuffs preferably contain 3 or 4 sulphonic acid groups and must be free of substituents reactive with the fibres or with aminoplasts; they may, however, be substituted with methyl or phenyl groups or halogen atoms.  The phthalocyanine dyestuffs are preferably in the form of complexes with manganese, cobalt, nickel and especially copper.  A great number of aminoplasts are listed, among which are the methylol or methylol ether derivatives of ethylene-urea, glyoxal-diureine and melamine.  The aqueous preparations may also contain water-in-soluble aminoplasts and thermoplastic polymer emulsions which may or may not be capable of cross-linking with the aminoplasts, for example, a polyethylene emulsion as a softener (many others specified).  The acidic catalyst may be ammonium sulphate, ammonium chloride, diammonium phosphate, zinc intrate, zinc fluoborate or ammonium silicofluoride.  The aqueous preparations are preferably applied at 10-40 DEG C in a continuous manner, e.g. by printing or padding and they may further contain wetting or dispensing agents, solvents or lubricants and also the printing pastes may contain thickeners such as starch tragacanth methyl cellulose or an oil-in-water emulsion as well as a hydrotropic agent such as urea.  The fibrous material may be dried, e.g. below 100 DEG C. prior to curing.  In the case of textile materials of regenerated cellulose it is of advantage to let the moist material lie for 1-6 hours before drying.  Curing may be effected at 120-180 DEG C. by steaming or dry heat.  Depending upon the ingredients of the aqueous preparation additional effects may be obtained such as crease and shrink resistance, permanent calender effects, water repellancy and modification of handle.  Unfixed dyestuff may be removed by rinsing at 40-80 DEG C. in a soap or synthetic detergent solution. Examples of dyeing and printing fabrics of spun rayon and cotton are given.
Patent GB-527702-A (GB)
Title: Improvements in and relating to liquid-blast electric circuit breakers
IPC: H01H33/70
Filed: 1939-02-13
Abstract: 527,702. Liquid-blast switches. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 13, 1939, No. 4690. Convention date, Feb. 12, 1938. [Class 38 (v)] The tubular movable contact 2 co-operating with a fixed contact 5 in an explosion chamber 1, has an insulating liner 6 extending to the arcing tip 7 to prevent lengthening of the arc by the blast through the vent 2<1>. The arrangement can also be used with double-break switches employing a pressure - generating break.
Patent GB-106514-A (GB)
Title: Improvements in or relating to Apparatus for the Softening and Purification of Water.
Inventor: LASSEN JENS JAKOB
IPC: B01D35/12
Filed: 1916-03-30
Abstract: 106,514. Lassen, J. J., and Hjort, V. F. March 30, 1916. Filters with loose filtering-materials.-In apparatus for purifying and softening water, in which the water is filtered by flowing upwards through a layer C of wood wool or granular material and is discharged by flowing over a weir E, the filtering- medium is cleansed without altering the direction of flow of the water, by injecting air, steam, or a mixture, through perforated pipes K and running off the water at an outlet below the level of the weir E. The outlet may consist of a stand-pipe provided with a valve opened during cleansing, or of a longitudinal trough H rotatably mounted and communicating with an outlet pipe J. The trough is normally above the level of the weir E and is turned by a handle H<2> into the position shown in dotted lines in one or other of the compartments of the filter during injection of air and steam into that compartment.
Patent GB-488121-A (GB)
Title: Improvements in the method of drawing sheet glass
IPC: C03B5/167
Filed: 1937-02-17
Abstract: 488,121. Making sheet glass. UNION DES VERRERIES MECANIQUES BELGES SOC. ANON. Feb. 17, 1937, No. 4782. Convention date, Feb. 17, 1936. [Class 56] A drawing-block, such as a " debiteuse " or a submerged bar, for use in drawing sheet glass is made of metal, and is characterized by the fact that the metal is so selected or treated that it resists corrosion by the glass or by the effect of heat. The block may be made of non-corroding steel, or of metal which is coated with a protective layer by plating with nickel or chromium, by cementation or by enamelling. British Specification 225,708, [Class 56], is referred to. Reference has been directed by the Comptroller to U.S.A. Specification 1,872,696.
Patent GB-348608-A (GB)
Title: Improvements in and relating to talking machines
IPC: G11B19/265
Filed: 1930-02-12
Abstract: 348,608. Gramophones. TUDSBERY, H. T., 64, Wellington R o a d, Edgbaston, Birmingham, and COLLARO, C., Culmore Works, Culmore e Road, Peckham, London. Feb. 12, 1930, No. 4796. [Class 40 (ii).] Means whereby the spiral groove of a disc sound-record is moved with a constant linear speed relatively to the stylus comprises a cam 22 which is moved by the tone-arm 4 so as to cause pivotal movement of an arm 28 carrying a brake pad acting upon the governor disc 30 of the motor, and in order that a change in the average speed of the turntable may be effected the pivot of the brakepad arm 28 is mounted so as to be movable in a rectilineal path. A bracket 7 on the tone-arm 4 has a pin 8 which passes through a slot 9 in a baseplate 1 and engages one end of a spring- controlled lever 10 connected by a pin 12 with a hook-shaped member 13. The lever 10 carries a pin 21 engaging the cam surface 22 of a pivoted lever which at one end is pivotally connected with a link 26 adapted to operate the brake-pad arm 28. The arm 28 is pivotally connected by a screw 41 to an arm 42 mounted upon a slide 43 engaging the edge of a portion 44 of the frame of the motor. A pin 45 on the slide 43 extends through a slot in the plate 1 and enters a cam slot 46 in a plate 47 which is pivoted on a pin 48. An operating arm 49 is connected to the plate 47 by a screw 51 passing through a slot 52 in the arm 49. As the tone-arm moves across the record, the pin 21 is caused to travel over the cam lever 22, which thereby moves the brake-pad away from the governor disc and effects an increase in the angular speed of the turntable. The lever 10 is set to its correct initial position by the movement of the tone-arm into starting position. When using records which rotate at constant angular speed a rotatable plate 16, engaging in a slot 14 in the hook-shaped member 13, is turned so that when the tone-arm is moved to its starting position the pin 8 on the bracket 7 is disengaged from the lever 10. Adjustment of the speed of the turntable is effected by altering the pivotal position of the lever 28 by means of the arm 49 and slide 43.
Patent GB-1043362-A (GB)
Title: Improvements in or relating to clamps
IPC: E04G7/14
Filed: 1962-02-08
Abstract: 1,043,362. Clamps. B. W. HARRISON. May 1, 1963 [Feb. 8, 1962], No. 4856/62. Heading E2B. A clamp comprises a clamping jaw having two members 2 interconnected in spaced apart relationship, each of the two members 2 having a curved recess including straight surfaces inclined at an angle to each other to present a substantially hooked or V-shaped part 4, and a member 7 remote such part providing a mounting for a threaded member 8 movable in a direction along an axis which is substantially parallel to a line bisecting the angle presented by the inclined surfaces and which on tightening, exerts a pressure on that surface of an article placed in the clamp which is remote from the recess and the endface of the article nearest the recess is pressed into contact with the spaced apart members. A holder 10 for a lamp is screwed to an end wall 9 of the clamp. In another arrangement, Fig. 2 (not shown) two clamps are loosely pivoted together back to back. In other arrangements, Figs. 3 and 4 (not shown) the clamp comprises jaws for connecting tubes together at right angles to one another, and in a further arrangement, Fig. 5 (not shown) such a clamp is provided with a support bracket. In all arrangements a threaded member 8 may be provided over each of the recesses.
Patent GB-720199-A (GB)
Title: Improvements in or relating to solutions of acrylonitrile polymers
Inventor: DOWNING JOHN
IPC: C08J3/09
Filed: 1952-02-25
Abstract: Copolymers of acrylonitrile with lower alkyl esters of acrylic or lower alkyl acrylic acids which contain 85 to 94 per cent of acrylonitrile are dissolved in nitromethane which is either anhydrous or contains not more than 3 per cent of water.  The lower alkyl groups forming the esters or substituting the acrylic acid are those containing 1 to 4 carbon atoms.  The solutions may be formed into fibres or films by the dry or wet spinning and casting techniques. After formation the fibres and films may be oriented by hot-stretching.  The preparation is described of a copolymer of acrylonitrile and methyl acrylate by copolymerization of the monomers in a mixture of water and methyl alcohol using a mixture of ammonium persulphate and sodium metabisulphite as a catalyst.  Specifications 636,476, 711,344 and 712,984 are referred to.
Patent GB-720585-A (GB)
Title: A new or improved hair curler
Inventor: WHYSALL WILLIAM ARTHUR
IPC: A45D8/32
Filed: 1953-02-21
Abstract: 720,585. Hair curlers. NEWEY BROS., Ltd. Sept. 18, 1953 [Feb. 21, 1953], No. 4905/53. Class 131. A hair curler comprises a body of semirigid plastic material consisting of two parallel limbs a, a connected at one end by an integral curved portion forming an eye c and a retaining loop h of flexible and elastic plastic material having at one end a bar j received in the eye and having at the other end an opening to engage the free ends e of the limbs. The body and loop are preferably moulded from polyvinylchloride the body being left unplasticized while the loop is sufficiently plasticized to make it flexible and elastic. A stiffening rib d is provided on each arm and a projection g on one arm reduces the entrance to the eye c to retain the bar in the eye. The curler is unaffected by lotions and oils and may be used in home permanent waving.
Patent GB-509003-A (GB)
Title: Improvements in or relating to filter-tip cigarettes
IPC: A24D1/02
Filed: 1939-02-15
Abstract: 509,003. Cigarettes. ESCOTT, J. Feb. 15, 1939, Nos. 4927 and 4928. [Class 130] A cigarette paper for filter-tip cigarettes has a gummed edge b and a patch d of rubber solution at or near one corner, adapted to adhere to a ring j of rubber solution on a filter tip r.