baber/WOPTO huggingface dataset:
Patent GB-601360-A (GB)
Title: Improvements in and relating to starting arrangements for electric discharge devices
IPC: H05B41/232
Filed: 1945-11-19
Abstract: 601,360. Control systems for discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 19, 1945, No. 31025. Convention date, Nov. 21, 1944. [Class 38 (iv)] A starting circuit connected in parallel with the discharge gap of a fluorescent tube or discharge device having an ionizable atmosphere, with or without thermionic electrodes, comprises an impedance 16 in series with a loop circuit of a condenser 14 and spark-gap 15, the loop circuit being inductively coupled with the discharge circuit. The spark-gap preferably has a breakdown voltage less than the open circuit voltage of the supply and a maintaining voltage less than that across the discharge lamp when operating. Upon energization by A.C. or D.C., the condenser 14 is charged until the spark-gap breaks down and a high-frequency impulse is induced in the lamp circuit. Fig. 1 shows two lamps 1 on A.C. with lead and lag circuits supplied from a step-up autotransformer 7. Modifications providing also a degree of electrode pre-heating employ separate secondary windings for heating each electrode on the transformer 18, 19 or on a transformer in the starting circuit. The lamps of Specifications 436,469, 545,935, 559,898 and 569,685, [Group XL], are referred to. The spark-gap may be furnished by electrodes 22, Fig. 2, with opposing flat surfaces and of barium-activated nickeltungsten in a moderately low-pressure gas. " Dark effect " alternations of breakdown voltage are obviated by aluminium paint 24 as in Specification 556,428.
Patent GB-1016178-A (GB)
Title: Stiffening element for a waist band of an article of clothing
IPC: A41F9/00
Filed: 1963-01-23
Abstract: 1,016,178. Garment waistbands. QUICK SERVICE TEXTILES Inc. Jan. 23, 1963 [Nov. 30, 1962], No. 31095/64. Divided out of 1,016,177. Heading A3V. A stiffening element for the waist edge of a garment comprises a strip of resilient material having over at least part of its width a transverse curvature, the convex side of which is to be positioned against the garment adjacent the waist edge. Preferably the whole width is a simple curve, Fig. 6; alternatively the curve may extend adjacent the upper edge only or the strip may be of shallow S section. Suggested materials are woven nylon, polyethylene or polypropylene or cotton cloth including heat-settable fibres of nylon etc. or horsehair. Preferably the strip has selvage edges formed by conventional weaving methods, by fusing marginal thermosetting threads or by turning in and pressing a small edge portion. In an alternative form an extruded strip of plastics composition, Fig 7 (not shown), and perforated with holes 36 or elongated transverse slots (not shown) may be used.
Patent GB-1502892-A (GB)
Title: Electrostatically focusing type image pick-up tubes and method of manufacturing the same
IPC: H01J31/38
Filed: 1975-07-25
Abstract: 1502892 Image pick up tubes HITACHI Ltd 25 July 1975 [26 July 1974] 31138/75 Heading H1D An image pick up tube includes between the electron gun and the target 2 a focusing lens comprising 3 coaxial cylindrical electrodes 19, 22, 23 whose inner diameters decrease from the target. The electrodes are supported on glass rods 21 via tabs 20, 20a, 20b with the electrode ends overlapping. The rods have rectangular or oval cross-section. Electrode 23 may be of constant diameter or may be tapered. The gun includes first and second electrodes 7, 8 and an apertured electrode 8a attached to the second electrode. The electrodes 8a and 19 act as a prefocusing lens. The tube screen is photoconductive. The lens is assembled in a jig comprising a mandrel on which the electrodes fit, supports for the glass rods and gas heaters. The rods are heated and the supports stated to press the rods against the tabs 20 until the glass cools. Differences in heating, operational times and pressures applied to each rod must be kept within specified limits.
Patent GB-274343-A (GB)
Title: Improvements in or relating to brake accelerators for single chamber compressed air brakes
IPC: B60T15/42
Filed: 1926-12-08
Abstract: 274,343. Hildebrand, W. Dec. 8, 1926. Right to Patent relinquished. Fluid-pressure.-In a brake accelerator for a single-chamber compressed-air brake in which the air from the train pipe c is admitted to the brake cylinder d in emergency application a chamber e is inserted in the connection between the train pipe and the brake cylinder, which is open to atmosphere during release and service application and during emergency application is adapted to receive a quantity of train-pipe air to accelerate the brake action throughout the train. When the triple valve a is in the emergency position auxiliary reservoir air is admitted to the emergency braking-device b to act on a piston f which opens a valve i and allows the pressure air above a valve k to escape and train-pipe air is able to raise the valve k and pass to the chamber e and also enter the brake cylinder. A slide valve forming part of the triple valve or a separate control member connects the chamber e with the atmosphere during release or service positions of the triple valve, or this function may be performed by a bore in the piston f or a bore h in the wall of the chamber. A check valve prevents return of air from the brake cylinder to the chamber.
Patent GB-1041969-A (GB)
Title: Blade tip lock for railway switch points
IPC: E01B7/02
Filed: 1965-07-22
Abstract: 1,041,969. Switch points locks. SOCIETE TECHNIQUE POUR L'INDUSTRIE NOUVELLE S.A. " STIN." July 22, 1965 [Aug. 7, 1964], No 31154/65. Heading B7N. A blade tip lock for a switch points comprises guide members 4 on each stock rail 3 for a points operating rod 5, a yoke 7 bolted to the underside of the tip of each points blade 1 and a locking bolt or latch 6 which extends through each yoke and through the guide member when the points are locked. Assume the points shown with the blade locked to the stock rail in position X has to be changed over, initial movement of the operating bar over a distance A allows the outer (tail) end of the latch at position X to move into a notch formed in the operating bar to unlock the associated blade tip. Further movement of the bar moves both blades to the opposite positions and a final movement of the bar moves the latch at position Y laterally out of the notch on the bar to lock the latch in the guide member 4 with its head 61 holding the blade firmly against the stock rail.
Patent GB-485110-A (GB)
Title: Improvements in or relating to dyestuffs for sensitizing photographic silver halide emulsions
IPC: G03C1/22
Filed: 1936-11-14
Abstract: Dyestuffs are made by condensing a five-membered ring compound containing the system <FORM:0485110/IV/1> in which R = H, alkyl, aryl or aralkyl in the presence of an anhydride of a monobasic organic acid and an acid binding agent with a quaternary salt of a heterocyclic nitrogen compound having a reactive methyl group in the a - or g -position to the nitrogen atom.  They are sensitizers for photographic silver halide emulsions.  In the examples the five-membered ring compound is condensed with the quaternary salt in the presence of acetic anhydride (1)-(22), (27)-(31), propionic anhydride (23), (25), (26) and benzoic anhydride (24), the following components being specified: rhodanic acid and its N-methyl-, ethyl- and phenylderivatives, N-methyl- or ethyl-2-thio - 4 - keto - tetrahydroxazole, 1 - phenyl-3 - methyl - 5 - pyrazolone; 1 - methylbenzthiazole, 1-methylbenzoxazole, quinaldine, lepidine, 2 : 3 : 3 - trimethylindolenine, 2-methyl-b -naphthathiazole, 1 - methylbenzselenazole, 2 - methyl - 4 - phenylthiazole, 2 : 4 - dimethylquinazoline, 2 : 4 - dimethylthiazole, a -picoline, and 2 - methyl - 4 - phenyloxazole as quaternary salts, e.g. methyl or ethyl p-toluene sulphonate or methyl iodide.  Other basic condensing agents specified are trialkylamines, dimethylaniline and sodium acetate. Five-membered ring compounds specified in general are rhodanic acid, 4-keto-2-selenotetrahydrothiazole, oxindoles, true hydantoins, and thiohydantoins, q -hydantoins and q -thiohydantoins, 2 : 4 - diketotetrahydrothiazoles and selenazoles, pyrazolones, 4-keto-2-thio (or seleno) - tetrahydro oxazoles or selenazoles or their N-alkyl, N-aryl or N-aralkyl derivatives.  The heterocyclic nitrogen compound may be in general an azole, azine, diazole or diazine such as a thiazole, oxazole, selenazole or polycyclic homologues thereof of the benzene, naphthalene, acenaphthene or anthracene series; pyridine and its homologues such as quinoline and naphthoquinalines; lepidines; indolenines; pyrimidines and quinazoline; thio-b b 1-diazole; oxazolines, thiazolines and selenazolines.  The carbocyclic rings may be substituted by hydroxy, alkoxy and methylenedioxy groups. Specifications 426,718 and 428,359 are referred to.
Patent GB-850139-A (GB)
Title: Recirculating delay line
IPC: H03H11/26
Filed: 1958-09-30
Abstract: 850,139. Electric signal delaying systems. CANADA, MINISTER OF NATIONAL DEFENCE OF. Sept. 30, 1958 [Dot. 9, 1957], No. 31239/58. Class 40 (4). Signals are passed through a delay line or the like a plurality of times, being modulated on a different carrier for each passage. In one embodiment, Fig. 1 (not shown), the signal is modulated on a carrier of 25:5 mc/s, passed through the delay line from whose output it is selected by a suitable one of a plurality of filters and demodulated to produce an output, which is then modulated on a carrier of 26.5 mc/s. for a second passage through the delay line and so on until finally a tenth passage is made modulating a carrier of 34.5 mc/s. Outputs from the respective demodulators produce versions of the signal delayed by 1, 2 ... 10 times the delay of the delay line. In a modification, Fig. 3, the input signal is modulated on a 25 mc/s. carrier and after delay at 31 passes the lowpass filter 37 (cut-off 30 mc/s.) after which it is mixed with 60 mc/s. at 39 to produce a signal modulated on 35 mc/s. This signal after delay passes highpass filter (cut-off 30 mc/s.) 37 2  and is mixed with 61 mc/s. to produce a signal modulated on 26 mc/s. This process continues the signal alternately passing through filters 37 1 , 37 2  on different carrier frequencies. Suitable filters 35 1  ... 35 10  followed by demodulators (not shown) may be used to draw off the signal delayed by various multiples of the delay time of the delay line 31. A modification, Fig. 4 (not shown) uses lower frequencies for mixing at 36, 39, but requires filters 37 1 , 37 to be band-pass filters. In a further modification, Fig. 5, the recirculating path for the delay line comprises a frequency changer using a beat-frequency oscillator of 11 mc/s., the upper sideband being subjected to further frequency changing using a beat-frequency oscillator of 10 mc/s., the lower sideband being then selected, to produce overall a frequency shift of 1 mc/s. per passage around the loop. The delay line may be replaced by a magnetic tape if the signals are such as may be modulated on to audio-frequency carriers. Signals in some cases may be extracted from tappings on the delay line if convenient.
Patent GB-1186943-A (GB)
Title: Improvements in or relating to Agricultural Machines
IPC: A01D41/14
Filed: 1967-07-06
Abstract: 1,186,943. Combine harvester. TEXAS INDUSTRIES Inc. 6 July, 1967 [9 Aug., 1966], No. 31265/67. Heading A1F. A combine harvester has a mowing platform 3 the position of which with respect to the ground can be adjusted by cylinders 13 and is characterized in that the fluid circuit includes an accumulator 53, a non-return valve 55 and an adjustable restricted portion 56, as shown, so that, in operation, the platform 3 is capable of moving resilently. The fluid pressure in the circuit is controlled by a control member 45. Fluid cannot flow through the valve 55 into the accumulator but can flow out of it quickly as there is a small drop in the pressure in the duct 52 so that the platform 3 readily matches the unevenness of the ground. The flow through the portion 56 can be completely cut when the platform is to be held above the ground. Duct 22 supplies fluid to a control slide 25 of the steering mechanism which fluid in turn flows from slide 25 to duct 32, when the harvester moves straight on, to run the reel-motor 18. When the steering wheel is turned, the flow from duct 22 to the slide 25 is cut off but the motor 18 can still be run as the flow from the duct 22 to the motor now takes place through a restricted portion of duct 40. Cylinders 16 (and 15) connected in series control the position of the harvester-reel and have been described and claimed in Specification 1,186,944.
Patent GB-1097987-A (GB)
Title: Electric switch
Inventor: RANSFORD ALAN JOHN
IPC: H01H13/12
Filed: 1965-07-22
Abstract: 1,097,987. Mechanical interrupters. METAMORA ELECTRONICS CORPORATION. July 22, 1965, No. 31276/65. Heading H2B. A switch intended for high-speed repeated actuation, e.g. by a cam, comprises a housing with a cylindrical opening rigidly sealingly closed at one end and resiliently sealing closed at the other end, a plunger carrying an annular movable contact co-operating with a fixed contact and operable by force applied to the exterior of the resiliently closed end, the plunger being spring-biased towards the resilientlyclosed end. As shown, the movable contact 244 is carried by a plunger 232 supported by springs 238, 240 and is operated by a button 218 secured to a diaphragm 216. Two fixed contacts 252, 254 are located by spacers 246, 256, 258, 260, the latter having cooling vents 262. The contacts are of silver, but may be aluminium with noble metal inserts (38, 68) and cooling fins (42, 66).
Patent GB-1197723-A (GB)
Title: Improvements in and relating to Catalysts.
Inventor: BOND GEOFFREY COLIN
IPC: C07B31/00
Filed: 1966-07-12
Abstract: 1,197,723. Hydrogenation. JOHNSON, MATTHEY & CO. Ltd. 4 July, 1967 [12 July, 1966], No. 31310/66. Heading C2C. Unsaturated organic compounds e.g. acrylic, crotonic, and maleic acids are hydrogenated using as a catalyst a rhodium compound with a cation (HRL(NH 3 ) 5 <SP>2</SP>+ or (HRL(NH 3 ) 4 H 2 O)<SP>2</SP>+. An aqueous solution of the compound is mixed with the ionic water-soluble amino compound, the anion of which may be from a mono- or divalent acid. Examples describe the use of hydridopentamine rhodium sulphate.
Patent GB-679492-A (GB)
Title: Improvements in and relating to electric commutators and dynamo-electric machines employing commutators
Inventor: SIMS ROBERT FRANK
IPC: H02K13/00
Filed: 1949-12-06
Abstract: 679,492. Commutators for dynamo-electric machines. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Nov. 28, 1950 [Dec. 6, 1949], No. 31338/49. Class 35. A commutator comprises a number of segments 18 so built up into a ring within a supporting tube 11 fitted concentrically within an annulus comprised by the armature iron, that their radially inner surface forms the brushengaging surface. The segments 18, which are L-shaped with risers 20, are separated by mica strips.
Patent GB-791434-A (GB)
Title: Improvements in or relating to electrical apparatus of the kind including a cathode ray tube
Inventor: BEAUCHAMP KENNETH GEORGE
IPC: H04N3/18
Filed: 1954-11-01
Abstract: 791,434. Converting. GENERAL ELECTRIC CO., Ltd. Nov. 1, 1955 [Nov. 1, 1954], No. 31531/54. Class 38 (2). [Also in Group XL (c)] In a scanning circuit, in which a valve 1 feeds a frame scanning output transformer 2, a rectifier 7 is connected, in series with load resistor 8 across the transformer secondary. The negative potential across resistor 8 is smoothed by condenser 9 and applied over resistor 10 as bias to the valve 1. It may also be utilized for providing grid bias for other valves in the apparatus.
Patent GB-604064-A (GB)
Title: Improvements in heel protector
IPC: A43C13/02
Filed: 1945-11-22
Abstract: 604,064. Boot protectors. GUTTMAN, O. Nov. 22, 1945, No. 31536. Convention date, Dec. 23, 1944. [Class 17(iii)] A protector for toes and heels of footwear comprises a flexible base portion 19 to which an overlay 22 of hard metal carbide is bonded. The base portion may be of thin flexible steel and the overlay may consist of one or more wedge or other shaped segmentsof Tungsten carbide particles cemented together by a metallic binder such as cobalt, the base and binder being secured together as by brazing or riveting. The protector may be inserted between tread piece 28 of heel and heel top lift 27 or recessed into the tread piece 28 from the outside, and may be held in position by nails 26 driven through holes in the base portion or through both base and overlay, or by prongs of somewhat curved cross-section integral with the base portion. Alternatively, the wear resistant elements 22 may be applied or bonded directly to leather, or may be moulded or cast in the rubber of rubber heels before the rubber is vulcanised.
Patent GB-1213207-A (GB)
Title: Apparatus for treating arable soil
Inventor: HIPWELL PETER JAMES
IPC: A01B49/04
Filed: 1968-07-02
Abstract: 1,213,207. Soil treatment. P. J. HIPWELL. 18 June, 1969 [2 July, 1968], No. 31569/68. Heading A1B. Apparatus for treating soil comprises at least one barrel-shaped rotor 7 having radially extending spikes or blades 7A which as shown is driven by a belt 11 connected to the wheel 8, and supported ahead of each rotor on a frame 13 with a ground wheel 14 a spray 15 for liquid or solid material whose height can be adjusted. The peripheral speeds of wheel and rotor are arranged to be different to ensure even mixing by the blades 7A of the sprayec material to the required depth. A skid 17 (not shown) adjustable in height, may be provided to prevent the roller from sinking into soft ground. The roller and spray assembly, singly or ganged, can be raised above the ground on the beam frame 2 by means of the hydraulic ram 3.
Patent GB-791498-A (GB)
Title: Manufacture of a vat dyestuff containing sulphur
IPC: C09B49/04
Filed: 1956-10-17
Abstract: A vat dye containing sulphur is obtained by heating 2-aminoanthraquinone with alkali metal sulphide and sulphur to temperatures above 250 DEG  C.  The product gives brown-black shades. In an example, an aqueous suspension of 2-aminoanthraquinone and sulphur is evaporated to dryness with a sodium tetrasulphide solution and the residue baked at 280 DEG  C. for twelve hours.
Patent GB-697166-A (GB)
Title: Improvements relating to telescopic umbrellas
IPC: A45B19/04
Filed: 1949-12-08
Abstract: 697,166. Umbrellas. HAUPT, H. Dec. 8, 1949 [June 18, 1949], No. 31607/49. [A Specification was laid open to inspection under Sect. 91 of the Acts, Dec. 8, 1950.] Class 134. An umbrella having telescopic stick, and rib parts is provided at the inner end of the handle 3 with a tip cup in the form of a sleeve 13 which is displaceable on an inner sleeve 12 secured to the handle 3 by a nail 15 or other means and serves to retain the tips 14 of the ribs when the umbrella is closed but extended. To telescope the umbrella, the sleeve 13 is moved downwardly to release the tips 14 of the ribs which spread away from the stick under the pressure of the lower edge 16 of the auxiliary slide 10 against the auxiliary spreaders 9. The sleeves 12 and 13 together with the handle 3 can then be pushed beneath the ribs and the main slide 4 enters a bore 17 in the handle 3. In an alternative construction, Fig. 3, the handle 3 comprises a metal tube 18. The retaining sleeve 21 is moveably mounted on a sleeve 20 which is held in position by a sleeve 22 having a nose 24 which springs into an opening 25 in the wall of the tube 18. In a simplified construction, the metal tubular handle itself forms the inner sleeve and has two spaced annular bulges which serve as a guide and stop for a moveable retaining sleeve mounted thereon. The Specification as open to inspection under Sect. 91, comprises also an arrangement, Fig. 5 (Cancelled), wherein the initial spreading of the ribs from the stick is produced by providing the auxiliary spreader 13 with an elbow 21 which bears against the spreader 10 when the umbrella is closed. The end of the auxiliary spreader 13 is provided with a loop 23 which slides on the rib part 8 or, in an alternative construction, the auxiliary spreader is connected to an auxiliary slide. To prevent telescoping of the ribs at the beginning of opening the umbrella, a spring 17, Fig. 3 (Cancelled), is mounted on the pivot 11 which connects the spreader 10, rib part 9 and guide sleeve 16, and has an arm 19 which presses on the bottom of the hollow rib part 8 and provides a constant braking action. In an alternative arrangement, Fig. 9 (Cancelled), the braking action is produced by a spring 25 bent to form a loop 30 which engages the rib part 9 while the free ends are anchored in an opening 29 in the wall of the spreader 10. The spring is stressed only when the umbrella is closed or nearly closed, and in addition to producing a braking action in the form of pressure between the guide sleeve 26 and the rib part 8, assists in the initial spreading of the ribs. This subject-matter does not appear in the Specification as accepted.
Patent GB-338311-A (GB)
Title: Improvements in all metal sliding doors for use on rail or road vehicles or ships
IPC: B61D19/00
Filed: 1929-10-17
Abstract: 338,311. Lightalloys, Ltd., and Knight, W. S. Oct. 17, 1929. Doors for passenger vehicles.-An all-metal sliding door for rail or road vehicles is constructed to present a smooth surface on each face without any projections. One face of the door comprises a cast plate 1 having a surrounding flange 2 to bosses on which are secured bv countersunk screws, rivets, &c. light metal plates 5. An additional grooved upstanding flange 2<x> is provided for a glazed opening, above which is provided a separate flanged casting 6 to close the space through which the glass panel is inserted. A removable plate or fillet is provided in the top or side of straight doors to facilitate glazing. The top flange of the curved door illustrated is shaped to carry the guide-rail. Specification 286,080 is referred to.
Patent GB-801958-A (GB)
Title: Improvements in invalid wheel-chairs or couches
IPC: A61G1/017
Filed: 1955-11-04
Abstract: 801,958. Perambulators; bath chairs. PATRICK, D. A. Nov. 2, 1956 [Nov. 4, 1955], No. 31656/55. Class 108(1) A combined wheel chair and couch comprises a rigid cradle, Fig. 2, of skkeleton construction; an articulated component, Fig. 3, comprising a back rest frame 32, 34, 36, a seat frame 38, 40, 44, and a leg rest frame 46, 48, the back rest and seat frames being articulated to one another and to the cradle about a transverse axis 60 offset above the plane of said frames (when mutually aligned to form a couch) and the seat and leg rest frames being mutually articulated about a transverse axis 66 and supported from the cradle by means 28 enabling the height of this axis 66 to be adjusted; a foot rest 70 adjustably mounted on the leg rest frame; adjustable strut means 50, 56 determining the inclinations of the back rest frame and of the leg rest frame, said means being anchored to the cradle; four rigid fork structures 80 pivotally connected in pairs, about transverse axes with the cradle at the head and foot ends respectively and detachably connected to spring suspension means mounted centrally of the cradle, each such fork structure having a running wheel 76 mounted therein. One pair of the wheels I have hub type or other brakes (not shown) controlled by a sheathed cable from a hand lever on handle - bar 20, the rigid fork structures 80 may be rotated through 180 degrees approximately enabling the cradle to rest on the ground, or they can be completely removed by sliding tubular members 82 off the ends of member 12. Loose cushions 98, 100 and 102 are fitted over the continuous spring mattress, Fig. 4 (not shown), comprising interconnected tension springs stretched across the complete frame formed by tubes 32, 38, 40, 46.