baber/WOPTO huggingface dataset:
Patent GB-496520-A (GB)
Title: Manufacture of dyes, and their use in modifying the properties of photographic emulsions
IPC: C09B23/10
Filed: 1937-04-26
Abstract: Photographic silver halide emulsions are sensitized by dyes of the following formula <FORM:0496520/IV/1> wherein R=alkyl, alkenyl or substituted alkyl, e.g. CH3, C2H5, n-butyl, decyl, allyl or benzyl, X=O or S and Y and Z=the same or different monovalent organic radicals or members of a common heterocyclic or homocyclic ring.  The dyes are made by condensing a quaternary salt of a 3-alkylthiol derivative of a 2 : 4-benzthiazine with an organic compound containing a reactive =CH2 group adjacent to a CO or CS group.  The quaternary salt may be a halide, alkyl sulphate, perchlorate or p-toluene sulphonate.  Basic condensing agents may be used such as sodium or potassium hydroxide, carbonates and acetates, sodium ethylate, organic bases, such as pyridine, or strong organic bases such as triethylamine, N - methylpiperidine or triethanolamine.  In examples: (1) and (4) 3-methylthiol-2 : 4-benzthiazine methiodide is condensed with 3-ethylrhodanine or benzoylacetonitrile in presence of anhydrous potassium carbonate and alcohol; (2) and (3) 3 - ethylthiol - 2 : 4 - benzthiazine methiodide is condensed with 4-keto-2-thione-3-ethyltetrahydrooxazole or cyanoacetanilide as in (1); (5) 3-methylthiol-2 : 4-benzthiazine is fused with methyl-p-toluenesulphonate and the product condensed with 3-ethylthiorhodanine in alcohol in presence of triethylamine. 3-Ethylthiorhodanine is made by treating 3-ethylrhodanine with phosphorus pentasulphide in benzene.  Specification 478,945 is referred to.
Patent GB-462888-A (GB)
Title: Improvements in or relating to electro-mechanical impedances
IPC: H03H9/54
Filed: 1936-09-11
Abstract: - 462,888. Impedance networks. STANDARD TELEPHONES & CABLES, Ltd. Sept. 11, 1936, No. 24812. Convention date, Oct. 2, 1935. [Class 40 (iii)] According to one aspect of the invention, a two - terminal impedance element comprises a stretched wire 1, Fig. 1, between magnetic polepieces 2, 3, so shaped that the field diminishes sinusoidally from the centre outwards. The back E.M.F. generated. when the wire vibrates is then zero for harmonic vibrations, and the impedance element exhibits a " resonance " only at the fundamental mode of vibration. Alternatively, the polepieces may be plane and the wire extend by <1>/6 of its length beyond each end, Fig. 8 (not shown) ; the back E.M.F. generated for the 3rd harmonic mode of vibration is then zero. In a further modification, a stretched membrane 8, Fig. 4, is positioned between electrostatic electrodes 6, 7 shaped to give a field varying sinusoidally from the centre outwards. Impedance elements of this last type are indicated at 13, 13<1>, 14, 14<1>, Fig. 7, in a lattice type wave filter. U.S.A. Specification 1,828,454 is referred to.
Patent GB-1414348-A (GB)
Title: Eccentrics
IPC: B23D47/08
Filed: 1973-05-24
Abstract: 1414348 Eccentrics; cams CARL ZEISS JENA VEB 24 May 1973 [25 May 1972] 24855/73 Heading F2K An adjustable resilient cam or eccentric 7<SP>1</SP> comprises two or more (three as shown) segments 10, 11, 12 pivotally connected by straps 14, 14<SP>1</SP> and spring-loaded apart at 15, 16 against adjustable locator stops 19, 20. The loading of the springs 15, 16 may be varied as required by screw adjusters 17, 18. Each two neighbouring segments 10, 11 and 11, 12 have tongue and groove engagements 23, 25 and 24, 26 therebetween to maintain planar alignment. The adjustable cam or eccentric 7 is used to reciprocate a grinding or cutting machine tool slide (3) via a roller follower (8) and push-rod (9) (Fig. 1 not shown). The outwardly spring-loaded segments 10-12 permit a soft, i.e. resilient, grinding or cutting operation to be performed on a workpiece, particularly in the starting phase of a cutting operation, whereby a larger number of grinding or cutting operations and a prolonged life of the grinding or cutting wheel are achieved.
Patent GB-333738-A (GB)
Title: Improvements in or relating to bed-rests and the like
IPC: A47C20/02
Filed: 1929-08-15
Abstract: 333,738. Greenwood, G. D. L. Aug. 15, 1929. Rests.-In a rest for use on beds, seats, &c., and of the kind comprising a back with arms projecting therefrom, the back a is made of substantially 'wedge-shaped formation. Sockets c may he provided on the arms b. The whole rest may be stuffed with spongy rubber, or may be provided with internal springs, or may itself be made of rubber so as to be inflatable and deflatable.
Patent GB-895767-A (GB)
Title: Method and apparatus for plane separation calibration in balancing machines
IPC: G01M1/22
Filed: 1960-07-18
Abstract: 895,767. Measuring rotor unbalance electrically. GISHOLT MACHINE CO. July 18, 1960 [March 21, 1960], No. 24925/60. Class 40 (1). The unbalance of a rotor is measured in two bearing planes and the signals combined by two sets of potentiometers in proportions determined by the distances between the bearing and balancing planes so that the resultant output signal from each set of potentiometers is indicative of the unbalance at each balancing plane, respectively. As shown (Fig. 1) a rotor 1 produces unbalance signals in pick-ups 6, 7 which are combined in one of two sets of potentiometers 24, 25 as selected by ganged switch 8. The sliders 29, 33 of the left-hand potentiometers 24, 25 are previously adjusted together so that the proportions of the unbalance signals selected by the sliders are exactly equal and oposite for a perfectly balanced rotor 1 with an unbalance mass 34 in the right-hand balancing plane 5. Thus, when an unbalanced rotor 1 is tested, the output signal from the seriesconnected sliders 29, 33 is indicative of the unbalance in the left-hand balancing plane 4 only. This signal is scaled by preset slider 42 of potentiometer 26 to give units of weight to be added, or depth of hole to be drilled, as indicated on a meter 16, after filtering at 12 and amplifying at 13. The unbalance signal may also be fed to a Stroboglow lamp 15 for indicating the angular position of the unbalance relative to a scale 46. Operation of switches 8, 11 enables the magnitude and angular position of the unbalance in the right-hand balancing plane 5 to be indicated by meter 16 and lamp 15, after calibration of the sliders of the right-hand potentiometers 24, 25 with an unbalance mass 37 in the left-hand balancing plane 4 of a perfectly-balanced rotor.
Patent GB-1222593-A (GB)
Title: Orientation process
Inventor: RISELEY ERIC IVAN
IPC: D02J1/22
Filed: 1968-05-24
Abstract: 1,222,593. Drawing multifilament yarn. IMPERIAL CHEMICAL INDUSTRIES Ltd. 5 May, 1969 [24 May, 1968], No. 24936/68. Heading B5B. Multifilament yarn of synthetic thermoplastic material, e.g. polyethylene terephthalate or polyhexamethylene adipamide, is drawn by leading an undrawn or partially drawn yarn through a zone where the filaments are heated to a drawing temperature under a tension insufficient to cause any irreversible elongation and then through a die having a converging entry, an internal passageway of minimum cross-section less than the total cross-section of the filaments of the yarn and a parallel or divergent exit, and exerting a dragging force on the yarn emerging from the die. In examples the yarn is heated using a heated water or mineral oil bath, or by contact with heated plates in the range 75-160‹ C. As disclosed, the die may comprise two optionally rotatable convex curved surfaces spaced apart from each other and confined between end plates to define a slot-shaped die.
Patent GB-322216-A (GB)
Title: Improvements in and relating to alloys
IPC: C22C19/00
Filed: 1928-08-30
Abstract: 322,216. Digby, W. P. Aug. 30, 1928. Alloys.-An alloy comprises' 20.3-34.5 per cent of iron, 21-50 per cent of nickel, and the remainder copper, with or without up to 20 per cent of chromium in place of a corresponding amount of iron. The constituents may be melted in a gas, coke, or oil fired furnace and the molten product finished in an induction furnace; or the whole operation may be carried out in the induction furnace. Small amounts of manganese may be added five minutes before pouring, and a deoxidant such as magnesium just before pouring.
Patent GB-685005-A (GB)
Title: Improvements in electric cables
Inventor: BLACKBURN REGINALD
IPC: H01B3/08
Filed: 1950-10-12
Abstract: 685,005. Cables. BRITISH INSULATED CALLENDER'S CABLES, Ltd. Oct. 11, 1951 [Oct. 12, 1950], No. 24964/50. Class 36. The insulation of an electric conductor 1 comprises an asbestos roving 2, two or more layers of glass fibre tape 3, asbestos roving 4 and a braided glass fibre jacket 5, each layer being impregnated with a silicone composition. The asbesots layers 2 and 4 are impregnated after application and baked for a short time to drive off the solvent before the application of the next layer. The glass tapes 3 are pre-impregnated with a silicone varnish which has been hardened. The jacket 5 is filled during braiding with a silicone paste and after smoothing the surface the cable is heated to convert the paste to a tough rubber-like covering 6.
Patent GB-408572-A (GB)
Title: Improvements relating to portable structures such as garden frames or chicken-houses
IPC: A01G9/16
Filed: 1932-09-08
Abstract: 408,572. Poultry-houses. HORTON, W. F., 13, Victoria Road, and BURROWS, R., 160, Nordley Hill, both in Wednesfield, and ECCLESTON, T., 2A, Alma Street, Willenhall, both in Staffordshire. Sept. 8, 1932, No. 25005. [Class 5 (ii).] A portable structure such as a garden frame, chickenhouse, or hut comprises panel wall-sections a, b connected together in line or at rightangles by clip members k, j on the ends of the sections, gable members c of triangular outline formed from angle-strip and fitting detachable at their ends to the end walls of the enclosure so as to present inwardly directed flanges for supporting the roofing material, and longitudinal angle-bars g detachably connected to the gable members at each side and the apex. Projection and slot connections are used for the side angles, and spring clip connections p, Fig. 9, are used for the longitudinal at the apex. For ventilation, some of the roof sheets are of less width than the others and the weather strip f is joggled for a portion of its length so as to leave a space between it and the roofing material, Fig. 4.
Patent GB-158940-A (GB)
Title: Improved construction of counting mechanism for envelope folding and other machines
IPC: G06M7/06
Filed: 1919-10-14
Abstract: 158,940. Brown, W., and Brown, G. Oct. 14, 1919. Envelopes, making.-Relates to a device for facilitating the counting in batches of finished articles issuing from a machine, particularly an envelope-making machine, and consists of means for automatically displacing at intervals one of the articles, say every twenty-fifth, the displacer being rendered inoperative should the passage of the article through the device be interrupted. As applied to an envelope-making machine, the device comprises a ratchet-wheel 3 having a number of teeth corresponding to the number of envelopes in the batch to be counted, say 25. The wheel is mounted in bearings adjacent to the receiving box 2 of the machine and is operated by a rocking-lever 5 which is oscillated by the spindle of one of the folders of the machine. A pawl 11 has a pivot 8 journaled in a slot in the lever 5 and pressed towards the forward end of the slot by a spring 9. The pawl has a nose-piece 12 capable of engaging a lug 13 secured to a shaft 14, and the shaft carries stops 15 which are moved by the top edges of the envelopes as they pass to the box 2. A frame 17 having arms 18 slides in guides adjacent to the ratchet-wheel and is controlled by a spring 19. A lever 20 pivoted to the frame 17 carries a spring 21 which has a lug 21a that projects into the path of a pin 16 on the face of the ratchet-wheel. In use, envelopes are received between the arms 18, whence they are pushed into the box 2. As each envelope passes it rocks the stops 15, thus removing the lug 13 from the path of the nose-piece 12 and allowing the ratchet-wheel to be moved through the space of one tooth. As the feed continues, the pin 16 strikes the lug 21<a> and lifts it, thus raising the lever 20 into the path of the tail end of the lever 5 so that the lever 20, and therefore the frame 17, is moved by the lever 5 against the action of the spring 19 and an envelope in the frame 20 is pushed out of line. In this way, every twenty-fifth envelope in the box 2 is indicated. Should the feed of envelopes fail, the stops 15 are not rocked and therefore the nose-piece 12 strikes the lug 13. The pin 8 then slides in its slot and the pawl 11 fails to move the ratchetwheel until the stops 15 are again moved by envelopes.
Patent GB-387275-A (GB)
Title: Improvements in and relating to cathode ray tubes
IPC: H01J29/48
Filed: 1932-09-09
Abstract: 387,275. Cathode-ray tubes. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.- (Assignees of Allgemeine Elektricitats-Ges. ; 2, Friedrich Karl-Ufer, Berlin.) Sept. 9, 1932, No. 25191. Convention date, Sept. 12, 1931. [Class 39 (i).] An indirectly heated cathode for a cathode-ray tube comprises a hollow metal cylinder 1, Fig. 1, which is divided transversely of its axis by a partition 2 into two portions in the upper of which is arranged a cathode 3 provided with a surface coating of highly emissive material such as barium oxide, while the lower portion contains a heating device arranged in such a manner that the magnetic field of its winding 4 is substantially in the direction of the axis of the cathode ray. The cathode 3 may be in the form of a metal strip folded into a series of zig-zags, the strip in the example being folded in this manner and then wound into a spiral. The upper end of the heating spiral 4 is connected to the bottom of the partition 2, its lower end being led through an aperture in the bottom plate of the cylinder. The other leading-in wire 5 is connected to the cylinder 1. To reduce the external heating effect of the cathode an outer nickel cylinder 8, Fig. 3, with a polished interior wall may surround the cylinder 1, and may be insulated therefrom to enable it to be used as a control grid with a separate leading-in conductor 9. The wall of the cylinder 8 is extended beyond that of cylinder 1 to provide an adequate controlling effect.
Patent GB-850607-A (GB)
Title: Method and apparatus employing induction heating for welding plate edges, such as the plate edges of a seam cleft in a formed metal pipe blank
IPC: B23K13/02
Filed: 1957-08-09
Abstract: 850,607. Electric induction heating. UNITED STATES STEEL CORPORATION. Aug. 9, 1957 [Aug. 17, 1956], No. 25243/57. Class 39(3). [Also in Group XXII] In preheating the spaced metal plate edges preparatory to welding therein, the edges are moved longitudinally, magnetic flux is induced on the edges generally parallel thereto and in opposite direction, in adjacent increments of the length thereof and magnetic return paths are provided for the flux outside of the edges, the induced eddy currents being confined to the increments in planes normal to the edges. A metal pipe blank 14 with spaced edges 13 travels under the preheating inductor P, Fig. 11, which comprises an elongated magnetic core 10, Fig. 9, with poles 11 around which a winding 12 is wound so that adjacent poles have opposite polarity . The winding is supplied with current at 1500-4000 e.g. 3000 cycles per second so that flux flows in the spaced edges from adjacent poles, the flux in adjacent increments of the length of the edges flowing in opposite directions. The blank preheated to 1300-1500‹F. passes under an inductor S, which induces flux across the edges and the edges are finally brought together by rolls 34. In an embodiment the core 10 of the preheating inductor is suspended by brackets 15 and two complete windings 12, each making one full turn about each pole, and confined between insulating plates 18, 19 spaced by posts 20. The windings formed from flat copper tube are connected at the right hand end to chambers 29 supplied with cooling water by pipes 30 and are connected at the left hand end to tubular conductors 31 extending from tubular bus-bars 32. Cooling pipes 23, 24 are arranged between the plates 18, 19 and the core and a thermal reflector sheet 26 of non-magnetic stainless steel is provided on the bottom of plate 19. The two windings are connected in series.
Patent GB-268237-A (GB)
Title: Improvements in drying apparatus
IPC: F26B17/20
Filed: 1926-10-11
Abstract: 268,237. Meister, K. Oct. 11, 1926. Rotary-scraper apparatus; heating fittings, - The moisture in brewers' grains &c. is, expressed by a screw-conveyer 5 and the grains fall into a steam-jacketed tube 7 from which they are fed by a screw-conveyer 9 into a trough drier 2 and thence into and through the rotary drier 3 by paddles 22, 23, the paddles 22 being carried by a part of the rotary drier which extends into the trough. The trough drier is heated by sickleshaped steam pipes 13 and by a current! of air which passes through a longitudinal opening 16a in the trough casing and beneath the steam pipes to an inlet opening 17. The rotary drier is heated by steam pipes 24.
Patent GB-735238-A (GB)
Title: Improvements in or relating to drinking fountains
IPC: E03B9/20
Filed: 1952-10-09
Abstract: 735,238. Drinking fountains. THROWER, S. E., BROMIGE, A., and FINCH & CO., Ltd., B. Oct. 9, 1953 [Oct. 9, 1952], No. 25344/52. Class 69 (1). A drinking fountain comprises a waste-water bowl 10 provided with a flat back 11 for fixing against a wall, an upwardly directed nozzle 13 connected to the drinking water supply and a detachable halfhemispherical apron 17 which extends down to the top of the bowl and which has a clearance hole 19 for the water jet. A control device, e.g. a lever 14 movable in all lateral directions or a push-button, for the water jet is mounted on the top of the fitting 12 carrying the nozzle and a volume regulator 15 is mounted in the lower part of the fitting.
Patent GB-1446820-A (GB)
Title: Relief arrangement for a closed gas turbine installation
IPC: F02C9/24
Filed: 1974-06-07
Abstract: 1446820 Closed circuit gas turbine plant BROWN BOVERI-SULZER TURBOMASCHINEN AG 7 June 1974 [8 June 1973] 25509/74 Heading F1G and F1T [Also in Division G3 ] A closed circuit gas turbine plant comprising a compressor 1, heater 5 and turbine 2 includes a relief pipe 10 having at least two jointly redundant parallel connected control valves 11, 12 and a flow limiter 13 in series with the valves. The flow limiter 13 may be upstream or downstream of the valves and may be a Venturi nozzle or a turbine. Valves 11, 12 are controlled by speed governors 15, 17 respectively and have different opening characteristics. Heater 5 may be a nuclear reactor. In a modification Fig. 2 (not shown) additional redundancy is provided by replacing each valve 11, 12 by a pair of servo-controlled parallel connected valves (11<SP>1</SP>, 11<SP>2</SP> and 12<SP>1</SP>, 12<SP>2</SP>).
Patent GB-481748-A (GB)
Title: Method of reducing the corrosive effect of nitrogenous bases on metals
IPC: C23F11/08
Filed: 1936-09-19
Abstract: To reduce or prevent the corrosive action of nitrogenous bases which normally have a corrosive action on iron, there is added an alkaline earth metal compound which is convertible by aqueous carbon dioxide into a water-insoluble carbonate.  Examples of such metal compounds are water-soluble salts of alkaline earth metals with acetic, formic or other lower fatty acid, and alkaline earth hydroxides. Compositions and the use of compositions containing alkaline earth metal salts in concentrations above 2 per cent are disclaimed.  The method may be applied in processes wherein cellulose esters are treated with aqueous solutions of organic bases to change their solubility properties, in processes for stabilizing and reducing the viscosity of nitrocellulose, in the treatment of cellulosic materials with organic bases to increase their affinity for dyestuffs, and in the saponifying of organic esters of cellulose.  The metal with which the nitrogenous base comes into contact may be pretreated by heating with an aqueous solution of boric acid.  The examples relate (1) to the treatment of regenerated cellulose artificial silk to increase the affinity for cotton dyes, and to the saponifying of cellulose ester materials, using a composition containing aqueous ethylene diamine and calcium acetate; (2) treatments as in (1) using calcium hydroxide in place of calcium acetate; (3) increasing the affinity of regenerated cellulose artificial silk for cotton dyes by treatment in an aqueous bath containing ethylene diamine and calcium hydroxide or calcium acetate; (4) reducing the acetyl content of cellulose acetate artificial silk using the bath in example (1); and (5) carrying out the process of (4) but using milk of lime instead of calcium acetate, and adding it during the process so as to maintain a slight excess of lime.  Specifications 429,103, 453,302, and 479,341 are referred to.
Patent GB-385672-A (GB)
Title: Improvements in devices for preventing vehicles running in an undesired direction
IPC: B60T7/12
Filed: 1931-09-11
Abstract: 385,672. Locking vehicle wheels. CATELLA, A., 95, Rue des Boulets, Paris. Sept. 11, 1931, No. 25558. Convention date, Sept. 12, 1930. [Class 103 (i).] Movement of a vehicle in either direction is prevented as desired by the provision of a pair of oppositely acting ratchet-and-pawl devices and means for selectively engaging the pawls with the ratchet wheels or for selectively coupling the ratchet wheels to the shaft of the vehicle. In Figs. 1 and 2 a pair of ratchet wheels e, e<1> enclosed in a casing c and secured to the driving shaft d of a motor vehicle are adapted to be engaged by sets of pawls f, f<1> respectively. A crown h rotatable on the fixed part a to a limited extent determined by pins and slots i, i<1> has recesses h<1> for the heels g of the pawls whereby according to the position of the crown as set by a rod l one or other set of pawls is engaged with the corresponding ratchet wheel. In Fig. 6, a pair of ratchet wheels o, o<1> permanently engaged by pawls f, f<1> freely mounted on a sleeve v secured to the shaft d are adapted to be coupled to the shaft by the engagement therewith of discs w, w<1> lined with friction material. The discs can be moved along the sleeve by operating members x, x<1>, projecting into grooves in the discs to force one disc or the other against the corresponding ratchet wheel. A casing c is provided. In a further construction, the discs on the sliding sleeve and the ratchet wheels have interengaging teeth and the sleeve is moved by a part rotation of other discs having a face cam engagement with fixed side members.