baber/WOPTO huggingface dataset:
Patent GB-624472-A (GB)
Title: 2.8-dihydroxynaphthalene-6-sulphonic acid as the azo coupling component for diazotype prints
IPC: G03C1/58
Filed: 1947-01-27
Abstract: 624,472. Photographic diazotype process. GENERAL ANILINE & FILM CORPORATION. Jan. 27, 1947, No. 2514. Convention date, March 20, 1946. [Class 98 (ii)] 2 : 8 - Dihydroxynaphthalene - 6 - sulphonic acid is used as the azo-coupling component in the diazotype process, and may be incorporated in the sensitizing composition or in the developing solution. The light-sensitive diazo compound may be 2 : 5 : 4<SP>1</SP> - triethoxydiphenyl- - 4-diazonium sulphate, and diazotized p-(N- hydroxyethyl : N - methyl) - aminoanilixie, p- (N - hydroxyethyl : N - ethyl) - amino - aniline, p - aminodiphenylamine, p - amino - N - ethylo - toluidine, 4 - diethylamino - o - phonetidine, 4 - benzoylamino - 2 : 5 - diethoxyaniline, pdiethylaminoaniline, p - dimethylaminoaniline, p - (N - benzyl : N - ethyl) - aniline, p - di- (hydroxyethyl) - aminoaniline, p - ethylaminom - toluidine, p - di - (hydroxyethyl) - aminoo - chloraniline, p - ethylaminoaniline, and p - phenylenediamine. The sensitizing composition may also contain metal salts such as aluminium sulphate, titanium ammonium fluoride, and nickel sulphate, stabilizers such as thiourea, thiosinamine, and naphthalenetrisulphonic acid, acids such as citric, tartaric, and boric, and hygroscopic agents such as glycol, glycerol, and dextrin. The support may be paper, regenerated cellulose, cellulose ethers (e.g. ethyl ether), cellulose esters (e.g. acetate, propionate, acetate-propionate, and butyrate), and linear superpolymers (e.g. superpolyamides, superpolyesters, superpolyethers, superpolyureas, and superpolyurethanes. In example 1, paper is coated with an aqueous solution of 2 :8- dihydroxynaphthalene - 6 - sulphonic acid, N- phenylaniline p-diazonium acid sulphate, citric acid, thiourea, and zinc chloride. In examples 2 to 5, the diazo compound of example 1 is replaced by the zinc chloride double salt of N : N - diethylaniline p - diazonium chloride, the zinc chloride double salt of N-methyl : N- hydroxyethylaniline p-diazonium chloride, the zinc chloride double salt of N-ethyl-o-toluidine p-diazonium chloride, and 2 : 5 : 4<SP>1</SP>-triethoxydiphenyl-4-diazonimn sulphate. The use as couplers of 2 : 3-dihydroxynaphthalene, sulphonated 2 : 3 - dihydroxynaphthalene, 2 : 7- dihydroxynaphthalene, 1 :5 - dihydronaphthalene- and 1 : 8 - dihydroxynaphthalene- 4-sulphonic acid is discussed. The Specification as open to inspection under Sect. 91 refers also to the use of diazotized p (N - ethyl : N - hydroxyethyl) - amino - otoluidine. This subject-matter does not appear in the Specification as accepted.
Patent GB-260457-A (GB)
Title: Improvements in or relating to automatically reclosing circuit breaker systems & apparatus
IPC: H02H3/07
Filed: 1926-01-28
Abstract: 260,457. Igranic Electric Co., Ltd., (Automatic Reclosing Circuit Breaker Co.). Jan. 28, 1926. Cut-out arrangements.-In an automaticallyreclosing circuit-breaker system, a thermal cutout relay 12 controlling the coil 9 of a resetting relay has its heating coil energized only when the circuit-breaker 1 is open so that, although the circuit-breaker may reclose a number of times, it is finally left open due to the cumulative heating effect, produced during the periods while the circuit-breaker is open, which serves to open the thermal cut-out. The cut-outs must be manually reset. When the circuit-breaker opens on overload due to the momentary opening of the overload relay 13, the maintaining circuit of its coil 8 is further broken at 15, 16, 17 and the heating coil 23 of the liquid thermal relay 12 is energized by the closure of the auxiliary contact 22. In assuming the off-position, the circuit-breaker releases an adjustable time-lag switch 10, 11 which slowly closes, thereby completing the reclosing circuit of the coil 8 through the thermal relay and independently of the maintaining contacts 15, 16, 17. The circuit-breaker consequently recloses and is maintained closed by the circuit through the maintaining contacts although, meanwhile, the reclosing relay 9 assumes the off-position. If the overload persists, the circuit-breaker may be again tripped until the cumulative effect of the heating coil actuates the thermal relay and breaks the reclosing circuit which can only be re-established when the relay is manually reset. Thermal cut-outs. - The thermal relay employed comprises a tube 30, Fig. 4, surrounded by the heating coil and containing a volatile liquid into which dips a tube 32 communicating with an expansion chamber 24. The heat volatilizes some of the liquid and creates a pressure in the expansion chamber which operates a dead-centre cut-out
Patent GB-1171593-A (GB)
Title: A Plasma Torch
IPC: G01N21/73
Filed: 1968-01-17
Abstract: 1,171,593. Arc lamps. ERNST LEITZ G.m.b.H. 17 Jan., 1968 [20 Jan., 1967], No. 2576/68. Heading H1X. A plasma torch for spectrum analysis examination processes comprises a cathode 19 and an annular anode 11 disposed in a casing which is subdivided by two disc-shaped apertured arc stabilizers 6, 9 and 7, 10 into three chambers of which at least the two outer chambers are provided with tangential inlet apertures 29 and 31 for a protective gas while the centre chamber has a viewing aperture (not shown) in front of which a spectrum analysis examination device can be disposed. The anode 11 and portions 9 and 10 of the stabilizers are of carbon and are supported in apertures in hollow discs 6, 7 or 8 of copper or brass. The thoriated tungsten cathode 19 is surrounded by a brass ring 20 and held by a rod 17 sliding in an aperture in a metal disc 5 and an insulating guide tube 18. Tap water is passed in series through the discs 5, 6, 7 or 8 which are spearated by insulators 12, 13 or 14, e.g. of asbestos cement, the assembly being held between insulating discs 1 and 2 connected by links 3 and (4) (not shown). A D.C. supply is connected between the disc 8 and a lead 21 to disc 5, the arc being struck by depressing the rod 17 against the action of a spring 15 until the ring 20 contacts the anode 11. The protective gas may be argon. Material for analysis is introduced by an atomizer 28.
Patent GB-336518-A (GB)
Title: Pressure gauge
IPC: G01L17/00
Filed: 1930-01-24
Abstract: 336,518. Schrader's Son, Inc., A., (Assignees of Wahl, J.). Jan. 25, 1929, [Convention date]. Pneumatic-tyre pressure gauges. - The instrument is provided with two deflating feet both operable without disconnection therefrom, a check valve having a tyre-valve unseating means for each deflating foot, and means for closing one check valve while the other is held open. The gauge proper A is connected by a pipe B to a foot portion C the axis of which is approximately parallel to the pipe B. The part C is fitted at each end with a deflating foot G and check valve F. Fluid tight connection with the tyre nipple is secured by a rubber washer E clamped by a screwed sleeve H the diameter of the tube in the washer being less than that of the hole in the sleeve. The two check valves are connected by a rod J guided by a spider K and the arrangement is such that when one valve is open, the other is closed.
Patent GB-551841-A (GB)
Title: Improvement in methods and apparatus for continuously electroplating metallic strips
IPC: C25D7/06
Filed: 1942-02-27
Abstract: 551,841. Electroplating metal strip. TRIGGS, W. W. (Carnegie-Illinois Steel Corporation). Feb. 27, 1942, No. 2624. [Class 41] In a continuous process for the electroplating of metal strip a series of substantially vertically disposed anodes adapted to be moved from side-to-side of the bath across and parallel with the moving strip is provided, fresh anodes being moved from inoperative to operative plating position and worn anodes being removed therefrom to inoperative position at the other side of the bath. The anodes 3, Figs. 1, 2 and 3, which are arranged in two opposed sets operating on the faces S<SP>1</SP>, S<SP>2</SP> of the strips S, are suspended by the hooked ends 22 from bridges 4 of which the central plates 15 only are in electrical contact with the conductor plates 9 ; they are separated by spacers 24. Fresh anodes suspended from one set of insulated end plates 14 at the entry end A of a bridge are adapted to be moved inwardly into operative position by being engaged by the ends 20 of racks 16; worn anodes displaced from operative position are engaged by the hooked ends 21 of similar racks 16 and moved to inoperative position on plates 14 at the end B. To compensate for the reduction in thickness of the anodes as they wear, the bridges 4 are arranged inclined to the plane of the strip, and to prevent a decrease in current density towards the lower ends of the anodes, tapered wooden cross-pieces 23 are provided which cause the anodes to become slightly inclined and bring the lower ends nearer to the strip S.
Patent GB-1034033-A (GB)
Title: Improvements in or relating to methods and means for anchoring articles to the ground or other media
IPC: E02D5/54
Filed: 1964-01-21
Abstract: 1,034,033. Clamp fastenings; remotely operated fastenings; ground anchors. CENTRE EXPERIMENTAL DE RECHERCHES ET D'ETUDES DU BATIMENT ET DES T.P. Jan. 21, 1964 [Jan. 28, 1963], No. 2646/64. Headings E1B, E2A and E2B. A method of anchoring a device to the ground or other medium comprises introducing an inflatable envelope 1 into a hole drilled in said medium inflating the envelope by means of a pressure fluid to engage the envelope with the walls of the hole, and connecting the envelope with the device. The means for carrying out the method comprises the inflatable envelope 1 and an anchor pin 7 secured thereto. In the embodiment shown the envelope 1 is of rubbery material reinforced with canvas strips 6 and is gripped at its lower end between a sheath 2 and a pin 3 into which the anchor pin 7 is screwed, and at its upper end between a sheath 4 and sleeve 5 through which the anchor pin 7 passes in contact with packing rings 5a on the sleeve. The anchor pin 7 has an axial conduit 7g which connects the interior of the envelope 1 to a pipe 15 and pump 14, and has an enlarged portion 7b with bores 7e through which bolts 11, 12 secured to the sheath 4, and to a collar 13 pass. To anchor an element 8, the pin and envelope are inserted into a bore hole and pressure fluid, e.g. water, is pumped into the envelope so that it is inflated to engage the hole walls as shown in Fig. 3. At the same time the sheaths 2 and 4 slide within the hole until the collar 13 engages the upper shoulder 7d of the enlarged portion 7b of the anchor pin 7. The supply of pressure fluid is cut off either when the sleeve 5, which may be provided with holes, is almost touching the pin 3 and an instrument 17 in the pipe 15 gives a predetermined reading, or the fluid supply may be cut off automatically when the end of the sleeve 5 forms a fluidtight joint with the upper end of the pin 3. When the envelope has been inflated the anchor pin is screwed into the pin 3 so that a stop 9 damps the element 8. To release the element 8 the stop 9 is released and a return valve 16 opened to allow deflation of the envelope. In a second embodiment the position of the envelope is determined by a hollow sheath inserted between the sheath 4 and the element 8.
Patent GB-1093521-A (GB)
Title: Improvements in or relating to jet propulsion devices
Inventor: WALTERS ARTHUR GWYNFRYN
IPC: F02K1/40
Filed: 1959-01-23
Abstract: 1, 093, 521. Jet propulsion nozzle; silencing gaseous flow. MINISTER OF TECHNOLOGY. Feb. 2, 1960 [Jan. 23, 1959], No. 2647/59. Headings F1B and F1J. To reduce blast damage and noise from jet engines, a shock wave is created across the jet by shaped vanes supported within the jet. The vanes may be tubular and mounted coaxially with the jet or be in the form of plates and arranged symmetrically on either side of the jet axial plane. As shown, Fig. 1, the tubular vanes 1, 2 are shaped so that the gas flowing through the central channel 8 is expanded more than that through the annular channel 9 and in addition, the emergent streams converge and collide. Both these effects produce stationary shock waves across the jet. In a further embodiment, Fig. 4, the vanes 30 are plates of cross-section similar to that shown in Fig. 1 and are attached to the launcher frame 25. The boost motors 27 are arranged on each side of the rocket axis 26. The vanes taper towards their inner ends 33 and converge towards each other in the inward direction. They are joined by web 31 and carried on brackets 34, 39. When the rocket is fired, and moves forward the boost jet intersection with 30 travels outwards.
Patent GB-738096-A (GB)
Title: Improvements relating to the preparation of modified alkyd resins
IPC: C08F212/14
Filed: 1953-01-30
Abstract: Modified alkyd resins are prepared by heating (1) a polycarboxylic acid essentially free from non-benzenoid unsaturation, (2) a polyhydric alcohol, and (3) a material selected from a group of natural drying or semi-drying oils, acids and monoglycerides, in the absence of any appreciable amount of any other polyfunctional organic acid, to give an acid number of less than about 30, adding a mixture of styrene or substituted styrene, and acrylonitrile or substituted acrylonitrile, and heat reacting in the presence of a polymerization catalyst and inert solvent until a 60 per cent solids solution has a Gardner-Holt viscosity of F-Z-5 at 25 DEG  C., the combined weight of the monomers varying between 15-60 per cent of the total combined weight of alkyd and monomers, and the weight ratio of the styrene to acrylonitrile being within the ranges 19 : 1 to 1 : 1 respectively. In a modification the heating is continued until the resin has viscosity of L-2-2.  The alkyds may be prepared from one or more polycarboxylic acids or anhydrides such as phthalic, succinic, glutaric, sebacic, adipic, pimelic, suberic, azelaic, and tricarballylic; polyhydric alcohols such as ethylene, diethylene, trimethylene, tetramethylene, and pentamethylene glycols, pinacol, arabitol, xylitol, adonitol, mannitol, dulcitol, sorbitol, glycerol, pentaerythritol, and dipentaerythritol; and a modifying oil derived from soya, linseed, dehydrated castor, perilla, safflower, tung and oiticica oils, and the reaction may take place in solution in e.g. xylol, toluol, high flash and heavy naphtha.  Styrene, a -methyl, a -chloro, o-methyl, p-methyl, m - methyl, 2,4 - dimethyl, 2,4,5 - trimethyl, p-ethyl, o-bromo, 2,4-bromo-4-ethyl, p-isopropyl, p-chloro, and 3,4-dichloro styrenes together with acrylonitrile, and meth-, eth-, a -eth- and a -chloroacrylonitriles may be used, in the presence of catalysts such as cumene and t.-butyl hydroperoxides, 2,21-bis-(t.-butyl peroxy) butanes, di-t-butyl-t-butylpropyl-, t-butyl pentamethyl ethyl peroxides. In examples, alkyds of phthalic anhydride and glycerine with (1) tung oil and linseed oil monoglyceride (2) oiticica oil and soya monoglyceride, (3) as (2) but with p-t-butyl benzoic acid, (4), (5) and (6) linseed oil and linseed monoglycerides, (7) cotton seed and dehydrated castor oils, and (9) soya monoglycerides and dehydrated castor oil are refluxed with styrene and acrylonitrile which is added incrementally together with a catalyst, such as hydroquinone and cumene hydroperoxide, t-butyl hydroperoxide, and di-t-butyl peroxide.  In example (8) a phthalic anhydride, glycerine, linseed monoglyceride alkyd is reacted with dimethyl styrene and acrylonitrile with a hydroquinone and cumene hydroperoxide catalyst.  Pigments, anti-skinning agents, anti-cratering agents and driers such as cobalt and lead naphthenates may be added to the resin solution for use as coating compositions.
Patent GB-689347-A (GB)
Title: Improvements in holders for table utensils
IPC: A47G21/14
Filed: 1951-02-03
Abstract: 689,347. Rests for table utensils. SCHONEMANN, A. P. Feb. 3, 1951, No. 2715/51. Class 128 A rest for table utensils, e.g. spoons and forks 7, comprises a bar 1 having a main rib 3 with transverse grooves 5 for receiving the shanks of the utensils, and a longitudinal support, e.g. another rib, which is lower than the rib 3 and parallel to it. The rest may have two supporting ribs 2 and 4. Each support may be higher than the lowest part of a groove 5. One of the two supporting ribs, e.g. rib 4, may have transverse grooves 6 aligned with the grooves 5. The rest may have two grooved inner ribs and two outer ribs without grooves.
Patent GB-536545-A (GB)
Title: Improvements in connections between ultra high frequency radio devices
IPC: H03H2/00
Filed: 1940-02-13
Abstract: 536,545. Wireless signalling apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 13, 1940, No: 2767. Convention date, Feb. 14, 1939. [Class 40 (v)] Apparatus operating at ultra-high frequency so that leads are an appreciable fraction of a wavelength in length, is connected by means which reproduce at the terminals of the apparatus the appropriate voltage. Fig. 2 shows the connection of a device 23 which may be a generator or a diode valve to a transmission line 11, 13 associated with an aerial 9 in which the physical size of the apparatus is large compared with the spacing of. the line. A second aerial 29 and line 31, 33 is energized to give similar standing waves and the spacing between the lines 11, 13 and 31, 33 is adjusted so that the device 23 may be connected with minimum length of lead. The lines may be terminated in a metal plate 15 and current leads may be brought out through the line conductor or through a small tube fastened to it. The aerials may be spaced half a wavelength apart in which case the apparatus is connected to the two corresponding lines, Fig. 4 (not shown). Fig. 5 shows an arrangement in which the length of conductor internal to the diode forms part of the transmission line on which standing waves are produced. An adjustable tuning section 47 enables the effect of inter-electrode capacity to be compensated, while the use of a half wave resonant section 49 ensures that the anode is connected to the point of maximum potential. A condenser 51 is provided in the line so that output may be taken from terminals 55. Instead of a series connected tuning section, a tuning section may be provided in parallel to the apparatus, Fig. 6 (not shown), and a similar tuning section may be provided in the other side of the line to improve the balance. Fig. 7 shows a half wave resonant section 49 used to connect the diode anode to the line and placed at an angle to a section 63 chosen to match the impedance of the rectifier to the line and adjust the sensitivity and selectivity.
Patent GB-1416581-A (GB)
Title: Manufacture of plain contact journal or thrust bearings
IPC: B32B7/04
Filed: 1973-01-19
Abstract: 1416581 Woven fabrics; impregnating SKF COMPAGNIE D'APPLICATIONS MECANIQUES 19 Jan 1973 [19 Jan 1972] 2835/73 Headings D1K and DIP [Also in Division F2] A process for the manufacture of plain bearings comprises the following steps: (a) a strip 1 of woven or unwoven material is formed from a mixture of metal threads and threads of thermoplastic fluorocarbonaceous resin such that one surface predominantly comprises metal threads and the other surface predominantly comprises resin threads; (b) the metal surface of the strip is secured to a drawn metal sheet 5 by means of a soft solder strip 9 in a soldering apparatus 14; (c) the resin surface of the strip is treated with a pre-polymerised thermosetting resin; (d) the laminated strip is passed through a heater 20 at a temperature insufficient to cause total polymerisation of the thermosetting resin, but sufficient to produce a robust but non brittle layer of a thickness such that the thermoplastic resin threads are prevented from fraying but appear on the external surface of the strip; (e) bearings are cut out and formed from the strip; (f) the bearings are heated at a lower temperature than the melting point of the solder layer, but sufficient to totally polymerise the thermosetting resin. A cross section through the laminated strip (Fig. 3) shows the thermoplastic fluorocarbonaceous threads 43 forming the bearing surface and partially buried in the resin layer 42. The metal threads 41 appear mainly in the solder layer 14. Preferably, the thermoplastic threads are of PTFE, the metal threads are of copper or stainless steel, and the thermosetting resin is a phenolic resin or a polyimide resin. The thermosetting resin may be applied in solution, as a liquid, or in pulverulent form by electrostatic deposition. In an alternative embodiment, the resin threads are embedded in paraffin in place of the thermosetting resin to prevent them from fraying during the cutting-out operation.
Patent GB-858080-A (GB)
Title: Improvements in or relating to a process for the preparation of high molecular weightepoxy-containing acetone-soluble products
IPC: C08G59/50
Filed: 1959-01-27
Abstract: High molecular weight epoxy-containing acetone-soluble products are made by heating at a temperature of 50  DEG C. to 300  DEG C. a solution comprising a glycidyl polyether of a dihydric phenol having an epoxy equivalency greater than 1,0 with not more than 5% by weight of the polyether of a Friedel-Crafts catalyst or a complex thereof until the viscosity of the mixture has increased at least 3 times but not sufficiently to cause gelation and then stopping the reaction. Specified dihydric phenols are hydroquinone, resorcinol, catechol, methyl resorcinol, 2, 2-bis (4-hydroxy phenyl) propane, 2, 2-bis(4-hydroxy phenyl) butane, 2, 2-bis(4-hydroxy-phenyl) pentane and 1, 5-dihydroxy naphthalene. Specified Friedel-Crafts catalysts are aluminium chloride, ferric chloride, aluminium bromide, zinc chloride, stannic chloride, p  titanium tetrachloride and complexes of boron trifluoride with amines, phenols, ethers, glycols and monohydric alcohols of which many are specified.  Specified diluents for the reaction mixture are xylene, toluene and cyclohexane. Polyhydric materials e.g. glycerol, 1. 2, 6-hexanetriol, polyvinyl, pentaeruthritol, polyallyl alcohol, copolymers of allyl alcohol with styrene, ethylene glycol, triethylene glycol and hexamethylene glycol may be present in the reacton mixture.  The products of the invention may be combined with copolymers of vinyl acetate with vinyl chloride or cured by conventional epoxide curing agents of which many are specified.  The Specification describes the preparation of glycidyl polyethers from epichlorohydrin and 2, 2-bis (4-hydroxy phenyl) propane, the examples describing the reaction of said polyethers with a boron-trifluoride-ethylamine complex. The products of the invention are soluble in ketones, esters, alcohols, hydrocarbons and chlorinated hydrocarbons.  The cured products of the invention may be used in combination with pigments, dyes, stabilizers, plasticizers, oils, resins, and tar for coatings, mouldings, laminating and reinforcing, e.g. glass fabric.  Specifications 730,670, 774,663 and U.S.A. Specifications 2,640,037 and 2,651,589 are referred to.
Patent GB-585208-A (GB)
Title: Improvements in high frequency electrical oscillators
IPC: H01J25/12
Filed: 1941-03-05
Abstract: 585,208. Velocity - modulated tubes. SAYERS, J., OLIPHANT, M. L. E., and WRIGHT, C. S. March 5, 1941, No. 2989. [Class 39 (i)] A velocity-modulated high - frequency oscillator is characterised by the electron beam being spread into a relatively thin lamina. In one form the section shown is rotated about an axis F F, so that the electron beam 1 emanating from the cathode 6 is developed into a thin disc or sector. In another form the section is moved parallel to itself and normal to the plane of the drawing. These forms are contrasted with the normal forms in which the section is rotated either about the symmetrical axis D D, or about the axis parallel thereto. It is stated in the Specification that only those electrons travelling in paths closely adjacent to the openings to the cavity resonators are most effective, and that by the construction of the invention greater efficiency can be obtained with an oscillator of a given size. Specification 585,209 is referred to.