baber/WOPTO huggingface dataset:
Patent GB-693042-A (GB)
Title: Improvements in or relating to electric switching arrangements
IPC: H01H9/56
Filed: 1950-07-13
Abstract: 693,042. Switching systems for A.C. circuits. GENERAL ELECTRIC CO., Ltd., and LAMBERT, R. A. May 9, 1951 [July 13, 1950; Oct. 19, 1950], Nos. 17568/50 and 25515/50. Class 38 (iv). A rectifier is in series with the operating coil of an A.C.-operated electromagnetic switch, such as an X-ray contactor, to ensure that the coil is energized at a predetermined point in the A.C. cycle each time the switch is to be operated, the series circuit also including a pair of normally-open contacts arranged to be closed during a half cycle when the rectifier is non- conducting. Further means are provided for holding the switch closed after the end of the half cycle during which it operated. In the arrangement shown, the coil C of an electromagnetic switch is supplied from an A.C. source M under the control of a push-button S, relay D2 and rectifiers R2, R6. Closure of button S causes relay D2 to pack up during a half cycle when R6 is conductive, the relay locking in over contact D1 and at contact D2, preparing an energizing circuit for the coil C, which is completed during the next half cycle of the same polarity. The operating time of relay D is made sufficiently long (preferably in excess of the duration of a half cycle) to ensure that the relay and electromagnetic switch do not operate in the same half cycle. A holding contact C1 maintains the coil energized until the button S is released. In another arrangement the contacts in series with the rectifier and operating coil of the switch consist of one contact and associated wiper of one bank of a three-bank uniselector switch which is stepped by an actuating coil fed from the source through a half-wave rectifier.
Patent GB-477342-A (GB)
Title: Connecting rod
IPC: F16C7/02
Filed: 1936-06-25
Abstract: 477,342. Connecting-rods. BUGATTI, J. June 25, 1936, No. 17675. Convention date, Aug. 19, 1935. [Class 122 (i)] A connecting - rod comprises two channelshaped members 3, 4 secured together by bolts 5, welding &c. with their webs juxtaposed in a plane at right-angles to the plane of movement of the rod. The ends of the members may overlap at 8, 9 to accommodate a bolt &c. 10. The members may be stamped from light sheet-metal, e.g. the metal known under the Registered Trade Mark " Duralumin."
Patent GB-547944-A (GB)
Title: Improvements in and relating to casettes for photographic plates or films
IPC: G03B42/04
Filed: 1940-12-16
Abstract: 547,944. Photographic plate and film holders. GENERAL ELECTRIC CO., Ltd., and CALDWELL, J. T. Dec. 16, 1940, No. 17752. [Class 98 (i)] A casette or holder for photographic plates or films comprises a flat tray-like bottom a from the sides of which short supporting-pins d extend laterally, so that when supported by them the casette hangs vertically, being thus suited for use in the magazines of the radiographic apparatus described in Specification 547,943. In the form shown, a felt pad b forms a backing for the film c, which is held by a plate m of material transparent to X-rays. Channel-section members g are slidably mounted on square section bars e secured to the ends of the tray a, their movement being limited by screws h passing through slots f in the bars, extensions k on the ends of the side walls of these members holding the plate m when the members are slid inwardly. Identification markings p, for reproduction on the negative, preferably at opposite corners, may be provided in material of a different degree of opacity to X-rays from that of the plate, for example by red lead filled into engravings.
Patent GB-595491-A (GB)
Title: Manufacture of azo dyestuffs
IPC: C09B43/08
Filed: 1945-07-12
Abstract: Azo dyestuffs, probably containing an azoxy group, are manufactured by condensing a 4-nitro-41-hydroxy-1 : 11-azobenzene-31-carboxylic acid (which may carry further substituents) with an aminodiphenylamine containing at least one water-solubilizing group (e.g. a sulphonic or carboxylic acid group), in the presence of an alkali, if desired under increased pressure.  The products are suitable for dyeing wool (by the after-chroming process) and leather, and particularly for chrome printing on cellulose fibres (yielding reddish brown to deep brown prints).  In examples, the following pairs of components are heated together in dilute caustic soda solution under reflux, or, in (1), at 110-115 DEG  C. in a pressure vessel: (1) 4 - nitro - 41 - hydroxy - 1 : 11 - azo - benzene-31-carboxylic-2-sulphonic acid and 4-aminodiphenylamine-2-sulphonic acid; (2) the same nitro-monoazo dyestuff and 4-amino-41 - hydroxydiphenylamine - 31 - carboxylic - 2 - sulphonic acid; (3) the same nitro-monoazo dyestuff, or its 21-methyl derivative, and 4-amino-41-hydroxydiphenylamine-31-carboxylic-2 : 51-disulphonic acid; (4) 4-nitro-2-methoxy-41 - hydroxy - 1 : 11 - azobenzene - 31 - carboxylic acid and 4 - aminodiphenylamine - 2 : 31 - disulphonic acid.  A table gives the properties of further dyestuffs, the following additional components being specified: nitro-monazo dyestuffs: 4-nitro-21-methyl-41-hydroxy-1 : 11-azobenzene - 51 - carboxylic - 2 - sulphonic acid, 4-nitro-5-methyl-41-hydroxy-2-methoxy-1 : 11-azobenzene-31-carboxylic acid and 4-nitro-2 : 5-dimethoxy-41-hydroxy - 1 : 11-azobenzene-31-carboxylic acid; aminodiphenylamine derivatives: 4-amino-41-methoxydiphenylamine-2-sulphonic acid, 4 - amino - 21 : 41 - dimethyl - diphenylamine-2-sulphonic acid and 4-aminodiphenylamine-31-carboxylic-2-sulphonic acid. 4-Amino-41-hydroxydiphenylamine-31-carboxylic acid-2 : 51-disulphonic acid, 4-amino-diphenylamine-2 : 31-disulphonic acid, 4-amino-21 : 41-dimethyldiphenylamine-2-sulphonic acid and 4-aminodiphenylamine-31-carboxylic acid-2-sulphonic acid are obtainable by reduction (e.g. with iron or sodium sulphide) of the nitro groups in the products obtained by condensing 4-nitro-1 - chlorobenzene - 2 - sulphonic acid, in the presence of an acid-binding agent (e.g. sodium acetate) with, respectively, 1-amino-4-hydroxybenzene - 3 - carboxylic acid - 5 - sulphonic acid, metanilic acid, 2 : 4-dimethylaniline and 3-aminobenzoic acid.
Patent GB-471952-A (GB)
Title: Improvements in and relating to the manufacture of acetone cyanhydrin
Filed: 1936-06-26
Abstract: Acetone cyanhydrin is produced by adding gradually gaseous or liquid hydrocyanic acid to acetone in the presence of an alkaline catalyst, the temperature of the reaction mixture being maintained below the boiling-point of the solution.  The basic substance should preferably be in low concentration such as 0,5 to 5 per cent in the water in which it is dissolved.  In examples, (1) gaseous hydrocyanic acid is introduced into acetone containing a little normal caustic soda solution at room temperature; the temperature rises to 30--35 DEG  C. and the mixture is then cooled to prevent further rise; (3) the crude product is heated to 60 DEG  C. and an inert gas such as air is passed through to remove remaining traces of free hydrocyanic acid.
Patent GB-240950-A (GB)
Title: Improvements in or relating to packeting machines or the like
IPC: B65B19/28
Filed: 1924-07-26
Abstract: 240,950. Rose, W.., and Rose Bros. (Gainsborough), Ltd. July 26, 1924. Cigarette-making machines.-Relates to machines for packeting batches of cigarettes or other articles in cartons and consists in the provision. of means by which a defective batch or article is ejected before arriving at the normal place of delivery. The batches of cigarettes are intermittently conveyed towards packeting apparatus or other destination in conveyer members 1 on a sprocket chain 2, and travel a sufficient distance for an attendant to defect an imperfect batch. Each conveyer member 1 carries a sliding bolt 4 with an operating knob 6 and a convex-ended extension 40. If the batch in any particular member 1 is defective, the attendant presses the bolt 4 to the right, so that the extension 40 depresses a lever 33 connected to a runway 25 which is also depressed so that a reciprocating ejector 7, pivoted at 9 to a sliding block 10 and supported by a roller 12 on the runway 25, sweeps the defective batch out of the conveyer member. If the batch is not defective, the bolt 4 is not pressed to the right, the lever 33 and consequently the runway 25, is maintained in a raised position by a spring 38, and the ejector 7 passes above the batch. Any bolt 4, which has been moved to the right is subsequently moved to the left by a fixed cam-face.
Patent GB-1091611-A (GB)
Title: Bearings for supporting mainly vertical loads
Inventor: CONWAY-JONES JOHN MICHAEL
IPC: F16C11/04
Filed: 1963-05-06
Abstract: 1,091,611. Bearings. GLACIER METAL CO. Ltd. May 6, 1964 [May 6, 1963; May 30, 1963], Nos. 17875/63 and 21753/63. Heading F2A. A bearing assembly for supporting vertical or mainly vertical loads while permitting a degree of movement in a horizontal direction, has an upper member attached to the part to be supported, a lower member mounted on a supporting member and an intermediate member, the surfaces constituting at least one of the two pairs of co-operating relatively sliding surfaces being of part-cylindrical form and at least one of the two surfaces constituting each pair being formed of self-lubricating material. In an embodiment, the bearing assembly comprises an upper member 11, Figs. 2, 3 and 4, an intermediate member 13 and a lower member 12. The bearing surfaces of the intermediate member 13 are concave part-cylindrical in shape apart from projections 13A, 13B which are received in recesses 11B, 12B of the members 11 and 12 respectively. The bearing surfaces of the members 11 and 12 are concave partcylindrical in shape. The upper member 11 has a stainless steel plate 14 bonded to its bearing face, the bonding for example being by means of an epoxy resin with the interposition of a layer of asbestos to prevent direct metal to metal contact. Similarly, the lower part 12 has a stainless steel plate 15 bonded thereto. The intermediate part 13 has strips 16 of metallic self-lubricating material bonded thereto, the latter comprising a solid bronze backing having bonded to its upper surface a layer of porous bronze impregnated with a mixture of P.T.F.E. and lead, for example. Sealing rings 17 are provided.
Patent GB-913174-A (GB)
Title: Improvements in means for the automatic control of starting devices of carburettors for internal combustion engines
IPC: F02M1/10
Filed: 1959-12-18
Abstract: 913,174. Carburetters. SOC. INDUSTRIELLE DE BREVETS ET D'ETUDES. Dec. 18, 1959 [Jan. 9, 1959], No. 17990/61. Divided out of 913,173. Class 7(3) Means for automatically bringing into action or putting out of action the starting and cold running devices of carburetters for internalcombustion engines, comprises a bimetallic spiral 5 sensitive to the temperature of the engine cooling water 14 and to the temperature of air heated by the engine, the spiral being anchored by its inner end to a spindle 6 which is integral with one of the walls of a chamber in which the engine cooling water circulates and the spindle projecting to the outside of the chamber. The Specification refers to starting devices comprising a choke valve or an auxiliary starting carburetter.
Patent GB-583066-A (GB)
Title: Improvements in or relating to variable speed electric drives
IPC: H02P5/60
Filed: 1943-11-01
Abstract: 583,066. Control of several motors. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Nov. 1, 1943, No. 18051. Convention date, Oct. 30, 1942. [Class 38 (iii)] [Also in Group XXXV] A variable-speed shaft 2 coupled to a fan 1 or other load which increases with driving speed, is driven up to a predetermined speed by a Ward - Leonard motor 4, which at higher speeds is assisted by a wound rotor induction motor 3. The rotor circuit includes a liquid rheostat 6 varied by a reversible motor 9 under the control of a relay 25, the operating coil 36 of which carries the armature current of motor 4. The Ward- Leonard generator 15 is driven by a synchronous motor 14 driving also a machine 16 which provides excitation for the motor and generator fields 17, 18, through ganged rheostats 19 and 20, and supplies power for motor 9, through contacts 29, 31 of relay 25. With the induction motor inoperative, motor 9 is energized over contacts 31, 30 and a limit switch 28, and raises the movable element 7 of rheostat 6 to its upper limit. The limit switch then breaks the circuit of motor 9. In starting up, switch 12 is closed and motor 14 drives machine 16 and generator 15. The speed of motor 4 may then be increased by anti-clockwise rotation of the rheostats, thus removing resistance from the generator field, whilst maintaining the motor field constant. Further motion of rheostats 19, 20 reduces the excitation of motor field 18, the speed of the motor thus tends to rise and its armature current increases, causing relay 25 to actuate against a dashpot 37 so that its contact 31 now engages contact 29 and, with manual or automatic closure of stator switch 13 for the induction motor, a circuit for motor 9 is completed. Motor 3 thereupon takes up load, and armature current of motor 4 consequently falls and relay 25 assumes a balanced position in which its contact 31 is midway between contacts 29, 30 to prevent further rotation of motor 9. Further movement of rheostat 20 produces a similar effect and motor 9 is again energized to remove further resistance from the rotor circuit of the induction motor, whilst the load on the Ward-Leonard remains constant. The motor 4 may also drive a generator 38, a portion of the voltage output of which is taken from a potentiometer 39 ganged to rheostats 19, 20 and applied to a valve amplifier 40. The output of the amplifier is applied to a generator winding 42 opposing the main field 17 and operating to compensate for speed fluctuations arising from causes other than movement of the rheostats. The fields 17, 42 may be combined, the excitation for generator 15 then being obtained from the amplifier which is so biassed as to provided, with zero input voltage, excitation corresponding to that provided by field 17.
Patent GB-650508-A (GB)
Title: Improvements in or relating to oscillating mountings for electric ventilators
IPC: H02K7/18
Filed: 1948-07-05
Abstract: 650,508. Screw fans. ERCOLE MARELLI & CIE SOC. PER AZIONI. July 5,1948, No. 18080. Convention date, July 4, 1947. [Class 110(i)] An electric fan in which the motor has a fixed shaft and a rotating casing on which the fan blades are mounted, comprises - rotating members driven from the motor .casing and connected by linking elements to a supporting journal, whereby an oscillating motion about the journal is imparted. The fixed motor shaft 2 is carried by a member 3 which also comprises a bearing for a stationary journal 4. A worm 7 carried by the rotating motor casing 1 drives a worm wheel 8 which is connected to a second worm (not shown) meshing with a worm wheel 9. The latter drives a crank 10 which is connected by a connect. ing rod 11 which is pivoted at 12 to a member 5. The latter is connected to the shaft 4 by a friction clutch 13, whereby the fan may be moved around to face in a desired direction. Means (not described) are provided for disconnecting the oscillating mechanism. Specification 646,317 is referred to.
Patent GB-150876-A (GB)
Title: Improvements in dry cell batteries
IPC: H01M6/08
Filed: 1919-07-21
Abstract: 150,876. Palmer, H. R. July 21, 1919. Electrodes.-The zinc electrodes 2 of a dry cell are sinuous in form and placed one on each side of the carbon electrode 1 so that the edges of the zinc face the carbon electrode as shown in Fig. 8, the whole being surrounded by the manganese depolarizer. Each zinc element is enveloped in a porous wrapping. In a modification, a single sinuous zinc element is placed between two carbons situated at opposite sides of the cell. The zinc element may be provided with recesses in opposite edges. Specification 150,848 is referred to.
Patent GB-908323-A (GB)
Title: Improvements in or relating to the fabrication of wire helices
Inventor: VOSS ROBERT GEORGE
IPC: H01J23/26
Filed: 1961-05-18
Abstract: 908,323. Glazing wire helices. WESTERN ELECTRIC CO. Inc. May 18, 1961, No. 18157/61. Class 56. [Also in Group XXII]  A method of making wire helices comprises winding a wire helix under tension around a mandrel having a coating thereon so as partially to embed the wire helix into the coating, placing a preglazed support member adjacent the helix, and then heating the mandrel, helix and support member to a temperature such that  the coating on the mandrel volatalizes substantially simultaneously with the glaze becoming at least tacky enough to grip the helix and prevent changes in the helix position. A tungsten mandrel 11 is first sprayed with a solution of colloidal graphite in water which on air-hardening forms a layer 22. A wire 23 is then wound into a helix around the mandrel 11 so as to embed itself to a depth of about half the thickness of the coating, flat portions 24 on the mandrel 11 preventing rotation of the helix after winding. The portions 24 are spaced a distance slightly greater than the length of the desired helix and several helices spaced by such portions may be wound in one operation. Three dielectric support rods 26 coated with a glaze having a melting temperature of 1100- 1200‹ C. are then placed in contact with. the outside of the helix on the mandrel and the assembly is heated in a furnace, having an atmosphere of 85% nitrogen and 15% hydrogen, to a temperature of 1185‹ C. The glaze becomes tacky and grips the helix while the mandrel coating volatalizes to free the mandrel from the. helix. Instead of dielectric support rods 26 the glass envelope of the travelling wave tube may be used as a support for the helix. Specification 734,771 is referred to.
Patent GB-872797-A (GB)
Title: Improvements in or relating to hardenable epoxy resin composition
IPC: C08G59/18
Filed: 1959-05-28
Abstract: A storage-stable hardenable epoxy resin composition comprises small granules containing: (a) an epoxy resin; (b) a solid condensation product having a molecular weight of at least 200 and an average of at least two active hydrogen atoms per molecule and (c) an epoxy resin hardening agent having a molecular weight of less than 300; the composition of the granules being such that the components described above that would give an undesirable reaction at room temperature, if mixed together, are not in the same granules.  Specified combinations are: (1) (a) granules containing the epoxy resin; (b) granules containing the solid condensation product and (c) granules containing the epoxy resin hardener; (2) (a) granules containing the epoxy resin and (b) granules containing the solid condensation product and the epoxy resin hardener and (3) (a) granules containing the epoxy resin and the solid condensate and (b) granules containing the epoxy resin hardener.  Specified epoxy resins are made by reacting polyhydric phenols or alcohols with epi- or dichlorohydrin.  Specified solid condensation products are novolacs containing at least two phenolic hydroxyl groups per molecule, phenol ketone condensates, condensates of amines or amides and aldehydes and polyamides. Specified epoxy resin hardening agents are amines, e.g. ethylene diamine, diethylene triamine, triethylene tetramine dimethyl amino propyl amine, diethyl amino propyl amine, dicyanodiamine, m-phenylene diamine, n-butyl amine, piperidine, triethyl amine, benzyl dimethyl amine, triethanolamine, dimethyl aminomethyl phenol, tris(dimethyl amino methyl) phenol and pyridine and organic polybasic acids and anhydrides, e.g. oxalic acid, phthalic anhydride and maleic anhydride.  The compositions are cured by heating and may be used as moulding powders.  In the examples, an epoxy resin made from epichlorohydrin and 2, 2-bis (4-hydroxyphenyl) propane and a novolac containing an average of 7,7 hydroxyl groups per molecule made by reacting excess phenol with formaldehyde in the presence of hydrochloric acid are used, exemplified epoxy resin hardening agents being benzyl dimethyl amine and diethylene diamine, the compositions also containing wood flour and a mixture of stearic acid, montan wax and zinc stearate as lubricant.
Patent GB-150362-A (GB)
Title: Improvements in apparatus for cooking by steam
IPC: A23N1/00
Filed: 1917-12-08
Abstract: 150,362. Mabbott, H. E. D., and Mabbott & Co. Dec. 8, 1917. Mashing, pressing, and squeezing fruit and vegetables. - Steam cooking and pulping apparatus, for vegetables, fruit and the like, but particularly intended for use in making potato flour, consists of a conical chamber a having a lid b, of which the part d is fixed and the part c is movable for charging purposes. It is provided with perforated steam pipes n and with a central rotating shaft k carrying a worm or screw j tending to mash the contents and to force them through a grid or wire mesh o at the bottom of the small chamber i. The grid is pivoted at q and held in position by a bolt and wing nut r. In place of, or in addition to, the grid or mesh, a close cover s, hinged at t, may be provided. In the modification shown in Fig. 3, the material is charged into and discharged from the apparatus by rotating valves w, having radial vanes x, and connected together by suitable means, such as a chain 2 and chain wheels 3, thereby making the process continuous.
Patent GB-978954-A (GB)
Title: Improvements in or relating to electrolytic recording media
IPC: B41M5/20
Filed: 1961-05-19
Abstract: An electrolytic recording medium comprises a sheet of paper impregnated with an electrolytically conducting, e.g. aqueous, solution containing a compound of a metal, capable of being oxidized in the presence of electrolytically produced alkalinity, and a polyhydroxyphenolic compound or an aromatic polyamine which, on passage of an electric current between electrodes contacting the paper, reacts with the oxidized metal compound produced to form a distinctive colour.  Suitable metal compounds are: manganous, cobaltous or nickelous chloride, chromic or silver nitrate, stannous sulphate, plumbous nitrate, thallous nitrate or sulphate, vanadium tribromide or trichloride.  The pH of the solution may range between 2.5 and 8.5.  Suitable polyhydroxyphenolic compounds are: gallic acid, catechol, gentisic acid, hydroquinone and pyrogallol.  Suitable aromatic polyamines are: o- and p-phenylene diamine, benzidene and their salts, diphenylamine hydrochloride and tolidine hydrochloride. A stabilizer, such as hydrazine, hydroxylamine or a salt thereof, thiourea, an alkyl thiorea and dithiobiuret, may be included in the solution, which may also contain sodium chloride, sodium or potassium nitrate and sodium hydroxide.  The electrodes need not be consumed during recording.  A preferred solution contains the following substances in parts by weight: manganous chloride 1.3, gallic acid 1.0 and sodium chloride 5.0.