baber/WOPTO huggingface dataset:
Patent GB-646383-A (GB)
Title: Sewing machine
IPC: D05B1/06
Filed: 1947-07-16
Abstract: 646,383. Cams; cranks. LION MANUFACTURING CORPORATION. July 16, 1947. Nos. 18950 and 18951. Convention dates, Feb. 2, 1943. [Class 80(iii)] [Also in Group VII] Cams. A cam for actuating the looper of .a sewing-machine by means of a follower 201 and rod 97, Fig. 38, in a cycle having, four intermediate dwells alternating with high or low positions is constructed so that :some or all of the latter positions may be made high or low at will. In the form shown a plate 211 on the shaft carries a cross-shaped part 213, which provides the intermediate positions by the ends M of its arms, and has four holes in which are placed members having stems 215 and eccentric cam portions 214 ; these members can be slid axially against spring pressure by finger knobs, and rotated on their stems so that when released the eccentric portions engage one or other of a pair of recesses 218 opening into each hole to hold them in position to form high cam portions, as at H, or low ones, as at L. In another form, Figs. 12-14 (not shown), the cam comprises a basic member providing the intermediate positions and alternating high and low positions between them, and two auxiliary members, each having a form corresponding to one of the high positions of the basic member, pivoted on the shaft and normally lying superposed on these high portions ; either or both of these auxiliary members can be turned to overly the low portions of the basic member to convert one or each low portion to a high portion. Adjustable-throw cams and cranks. A cam 24, Fig. 6, engaging a yoke on the end of a sewing-machine feed-bar 30 and carrying a crank-pin 31 for actuating a needlebar 32 is slidable in transverse channels in the hollow shaft 14 and is shifted laterally of the shaft by means of a shaft 15 lying in the bore of the shaft 14 and having teeth 28 engaging rack teeth 27 on one sliding surface of the cam 24. The shaft 15 has a slotted arm 125 engaged by a crank-pin on a gear 132 carried by a drum 22 which is angularly adjustable relative to a flywheel 21 on the shaft 14. A lever pivoted on the spindle of the gear 132 carries a pinion in mesh with the gear, and can be moved to engage this pinion either with a fixed pin, to lock the gear, or with teeth 130 on the bearing 20 of the shaft 14. When the gear 132 is locked, adjustment of the drum 22 will adjust the cam 24 laterally of the shaft; when the pinion is in engagement with the teeth 130 rotation of the mechanism will cause rotation of the gear 132 to produce oscillation of the arm 125 and thus cyclic variation of the position of the cam.
Patent GB-239029-A (GB)
Title: Improvements in vacuum electric tube amplifying apparatus
IPC: H01F21/08
Filed: 1924-08-09
Abstract: 239,029. Cachemaille, A. S., (Westing- house Electric & Manufacturing Co.). Aug. 9, 1924. Thermionic amplifiers and detectors. -- An auxiliary direct-current winding having an adjustable energy source is provided on an inbervalve transformer to vary the resonant frequency by adjustment of the permeability of the core. The Figure shows a high-frequency amplifying valve coupled to a detecting valve by means of a transformer 15 and a transformer 27 coupling the detecting valve to a low frequency amplifying valve. Windings 39, 41, connected to sources 42, 43 through adjustable resistances 44, 45 are provided on the transformer 15, 27, and in the circuit of winding 39 on the high frequency transformer 15 a high frequency choke 46 is provided. The conditions necessary to obtain sharply resonant transformers are analyzed in the Specification and resonance curves shown. Specification 134,585 is referred to.
Patent GB-1184002-A (GB)
Title: Connection between a Ferrule and a Tab
IPC: H01R43/058
Filed: 1968-04-23
Abstract: 1,184,002. Stamping; making electrical connections. AMP Inc. 23 April, 1968 [11 May, 1967], No. 18998/68. Headings B3A and B3Q. [Also in Division H2] A ferrule 16 is crimped about a tab 12 in press dies 26, 28 so that the tab and flattened ferrule are deformed arcuately about axes extending longitudinally and transversely of the tab. The ferrule 16 and a pair of tabs 12, integral with tantalum plates of a cell 10, are also corrugated transversely by the dies 26, 28. The inner surfaces of the gold plated stainless steel ferrule 16 are provided with indentations (22).
Patent GB-834014-A (GB)
Title: Apparatus for maintaining a band, web or strip of material along a predetermined lateral path of movement
IPC: B21D43/02
Filed: 1956-06-20
Abstract: 834,014. Feeding webs. DYNAMIT ACTIENGESELLSCHAFT VORM. A. NOBEL & CO. June 20, 1956 [June 29, 1955], No. 19097/56. Class 100(1) [Also in Group XXIX] In apparatus for correcting lateral deviations of a running web 2, a roller 1, which applies tension to the web by the action of fluid pressure on one side of pistons connected by rods to the ends of the roller, is tilted to correct a deviation by fluid pressure on the other sides of the pistons, this latter pressure being controlled by a valve operated by a detector engaging the edges of the web. As shown, the axis of rotation of the tension roller 1 around which the web 2 passes is tilted, in response to lateral deviations detected by a feeler 31 having web-engaging prongs, by piston rods 3, 4 connected to each end of the roller 1. The piston rods 3, 4 carry pistons 5, 6 slidable in cylinders 7, 8. Constant pressure is transmitted from a pressure bottle 16, via pipes 13, 14 and 15 to the outer faces of the pistons, while a variable pressure, dependent on the position of the feeler 31 is applied to the opposite faces of the pistons 5, 6. The position of the feeler 31 controls the setting of a valve 26 having pistons 27 carried by a piston rod 29. The pistons 27 have oblique faces 28 co-operating with orifices 24, 25, such that the position of piston rod 29, as determined by the feeler 31, controls the opening and closing of such orifices. The rod 29 can be rotated by a handle 37 so as to vary the circumferential positions of the faces 28 in relation to the orifices 24, 25. A pump 21 supplies fluid to tapering nozzles 19, 20 connected at their narrowest points to the cylinders 6, 7 and at their outlets to the orifices 24, 25 of the throttle valve. Movement of the feeler 31 due to web deviations operates the valve 26 to cause variations in the fluid flow in the nozzles 19, 20 and thus to alter the pressures in the spaces 11, 12 behind the pistons 5, 6 and effect movement of the pistons and the roller 1 to correct the deviation. Specification 770,926 is referred to.
Patent GB-1076633-A (GB)
Title: Ion-control system for electrochemical machining
IPC: B23H3/02
Filed: 1964-05-07
Abstract: In electrolytically machining a workpiece, a current having a waveform similar to that shown in Fig. 2 or Fig. 3 is employed. Fig. 1 illustrates an embodiment wherein a workpiece 211 is first electrochemically machined and then finished by spark discharge machining.  During working, a hollow electrode 210 is fed forward by a servomotor 215 which keeps the work gap constant. During electrolytic machining, electrolyte, e.g. aqueous NaCl and optionally an inert gas such as N2 is pumped through the electrode and, during sparking, dielectric liquid such as kerosene is used.  The dielectric and electrolytic liquids are separated within a reservoir 220 as a consequence of their different specific gravities.  A three-phase current supply 230 provides current via transformers 233 and 234 for electrolysis and sparking respectively.  The secondary windings of the transformers are connected with windings of saturable core reactors 235 and 2351.  In the electrolysis circuitry, rectifiers 200A-C provide half-wave rectification of the three-phase current. When one of the switches 239A-C is closed, an impedance is bridged across the rectifier means 200B and the waveform of the current supplied to the electrodes is as shown in Fig. 2.  H.F.-A.C. from a supply 209 may be superimposed on this. Network 237, 238 is responsive to the potential across the work-gap and maintains the power supply thereto substantially constant.  Fig. 6 (not shown) illustrates alternative circuitry for producing a current waveform as shown in Fig. 2. The examples are of electrolytically machining I) a body composed of 60% by weight of WC and 40% by weight of Co using an aqueous NaCl electrolyte. After initial machining, the workpiece was finished by spark discharge in a kerosene dielectric.  II) Electrolytically machining a tungsten-steel workpiece using a Cu electrode. <PICT:1076633/C6-C7/1>
Patent GB-842683-A (GB)
Title: New sapogenins and improvements in or relating to the treatment of mixtures containing sapogenins
Inventor: MIRAMONTES LUIS ERNESTO
IPC: C07J71/00
Filed: 1958-06-16
Abstract: The invention comprises hydrazone compounds of the general formula. <FORM:0842683/IV(b)/1> wherein R represents hydrogen, an alkyl radical containing 1 to 6 carbon atoms or a -CSNH2 radical, and azine compounds of the general formula <FORM:0842683/IV(b)/2> wherein R1 represents an alkylidene radical containing from 1 to 6 carbon atoms or a 12-desoxohecogenin radical, and a process for the separation of hecogenin (isolated in the form of a 12-hydrazono compound) from a mixture of non-oxosapogeins such as tigogenin, sarsasapozerien and diosgenin, by heating the mixture with a hydrazine of the general formula RNH-NH2, wherein R has the above significance, in an alkanol containing from 1 to 6 carbon atoms and separating the desired hydrazonohecogenin from the unreacted components of the mixture by differential solubility.  The resulting hydazono-hecogenin may be hydrolysed to hecogenin in acid solution.  The reaction mixture containing the hydrazono-hecogenin may be evaporated to dryness and the hydrazonohecogenin extracted with an alkanol containing from 1 to 6 carbon atoms, or the reaction mixture may be concentrated until the non-oxosopogenins precipitate and may then be filtered off, or sufficient water may be added to precipitate the non-oxo-sopozenins which may then be filtered off.  The azine compounds of the above general formula are prepared by treating the hydrazone compounds of the above general formula in which is R hydrogen with an aldehyde or ketone such as acetone, formaldehyde or butanone, or when R is other than hydrogen by refluxing with an organic acid in the presence of a small amount of ethanol or a small amount of ethanol containing hydrogen chloride, by vacuum distilling the reaction solution resulting from the hydrazone formation, by refluxing the hydrazone in a lower alkanol containing a small amount of pyridine hydrochloride, or by refluxing the hydrazone in a high boiling solvent such as tetrahydronaphthalene or the monoethyl ether of ethylene glycol. The azines of the above general formula can be converted to hecogenin by hydrolysis with acid or by refluxing at a pH of about 1 to 2 in a solution of an alkanol containing from 1 to 6 carbon atoms alone or admixed with a less polar solvent such as chloroform.  Detailed examples are given.  The Specification also refers to the hydrazines formed by treating hecogenin with phenylhydrazine and phenylsemicarbazine.
Patent GB-119363-A (GB)
Title: Automatic Braking Device for Compensation Gears of Automobiles and other similar Vehicles.
Inventor: BILGRAM HUGO
Filed: 1917-12-31
Abstract: 119,363. Bilgram, H. Dec. 31, 1917. Energy-absorbing elements. - Excessive independent rotation of the gear-wheels of differential or balance gears for automobiles &c. is prevented by the use of an oil or grease retaining casing and of guards which fit closely into the angles formed by the intermeshing gears and prevent the ready passage of the lubricant between the guards and the gears. The casing 2 carries planet-pinions 5 gearing with bevel-pinions 4 on the divided axle 8, the gearing fitting closely within the casing, which is partly filled with oil, grease, or the like. The ring 7 carrying the planet-pinions is provided with guard-like projections 9 fittingly closely into the angles formed by the intermeshing teeth. The guards may be formed in two parts and be secured to the casing. If relative rotation between the wheels 4 takes place, oil is carried by the teeth into the angles behind the guards 9 but is unable to pass the pinions 5 owing to the intermeshing of the teeth, and can escape but slowly past the guards 9, so that the rotation is checked and excessive slip of the road-wheels prevented.
Patent GB-1528023-A (GB)
Title: Chopped electrical power supplies to loads
IPC: H03K17/0814
Filed: 1976-04-06
Abstract: 1528023 Protecting switching transistors MAWDSLEYS Ltd 6 April 1976 [7 May 1975] 19279/75 Heading H2H To reduce the amplitude of the current transient occurring at each switch-on of a transistor Q1 controlled by a pulse generator 4 to chop the supply from a D.C. source 2 to an inductive load 3, which transient is caused by the presence of a freewheel diode D1 across the load, a further diode D2 is added to the known circuit of components 2, 3, 4, D1 and Q1 and the generator 4 is connected across the series combination of the base-emitter junction of transistor Q1 and diode D2, whereby negative feedback from the diode D2 reduces the base drive to the transistor, thereby reducing the rate of rise of its collector current and hence the peak value of the transient current. Load 3 may be a rotating electrical machine or a transformer and the transistor may be of PNP type, in which case the polarity of diode D2 is reversed. Operation of the known circuit and its production of the transient are described, Figs. 1 and 2 (not shown), and the characteristics (forward voltage and current against time and each other to give the static and dynamic forward characteristics) of the diode D2 are discussed, Figs. 4 and 5 (not shown). The dynamic forward characteristic is such that, with a step rise in forward current, a transient forward voltage (VI) is produced whose value and duration is a function of the diode D2 and which is fed back to the generator 4 to produce the abovementioned control of transistor Q1 to reduce the transient current.
Patent GB-463231-A (GB)
Title: Improvements in and relating to electrically heated roasting and baking ovens
IPC: F24C15/08
Filed: 1936-07-11
Abstract: 463,231. Oven doors. BRITISH THOMSON-HOUSTON CO., Ltd. July 11, 1936, No. 19290. Convention date, July 12, 1935. [Class 126] A door for an electric cooking-oven is formed on its inner side by a heat-reflecting plate a the centre portion of which is corrugated whilst the edges c are turned back.
Patent GB-147225-A (GB)
Title: Automatic cut-out for electric motors
IPC: H01H50/68
Filed: 1920-07-07
Abstract: 147,225. Vaile-Kimes Co., (Assignees of Kimes, H. W.). June 16, 1915, [Convention date]. Switches, quick-action; pneumatic actuation.- Relates to pressure-operated switches for opening and closing the circuits of electric motors driving pumps. According to the invention the construction comprises two interacting members 30, 31 one of which is formed with two inclined faces and has a spring attachment to a movable contact member 28, while the other is in the form of a roller or like tip adapted to engage the two inclined faces alternately and is attached to a member 22 subject to air pressure. As shown, the device is mounted on an upright frame 5. The contact-member 28 is pivoted at the top lefthand corner of the frame and the operating- member 22 is pivoted at the bottom right-hand corner. A flexible diaphragm 3 situated over an air conduit 4 transmits the air pressure to a plunger 8 controlled by an adjustable compression spring 10, the movement of the plunger being directly transmitted to the member 22. A downward movement from the position shown first presses back the inclined member 30 against a spring 33 until the roller 31 is freed, when it moves quickly against a stop 26, and reacts with the oppositely inclined face of the member 31, thereby rocking the contact member on its pivot so as to bring a bridging contact 16 upon stationary contacts 17. Upward movement of the plunger acts in a similar manner to separate the contacts.
Patent GB-183352-A (GB)
Title: Improvements relating to clothes-pegs
IPC: D06F55/00
Filed: 1921-07-18
Abstract: 183,352. Spooner, A. July 18, 1921. Clothes-pegs.-Relates to wooden clothes-pegs strengthened by bands or rings at the head of the slit to prevent splitting. According to the invention, a ring or band b of vulcanized fibre is employed, secured by a tack d. The fibre strip is preferably applied wet, so that it shrinks when dried and grips the peg firmly.
Patent GB-147428-A (GB)
Title: Improvements in arc transmitters for wireless telegraphy and telephony
IPC: H03B19/03
Filed: 1920-07-07
Abstract: 147,428. Ges. f³r Drahtlose Telegraphie. July 3, 1914, [Convention date]. Wireless signalling. -Oscillations generated by an arc a are transferred to an aerial through a magnetic frequency-raiser b, c, and may at the same time be modulated to a musical tone, or in accordance with speech, by currents in additional windings n, o. Signals may be sent by a key in the modulating-circuit, the operation of the arc being undisturbed. The frequency - transformers may double or treble the frequency.
Patent GB-1153578-A (GB)
Title: Phenyl-Isopropylamine Derivatives
IPC: A61K31/14
Filed: 1966-05-03
Abstract: 1,153,578. Antidepressive &c. compositions. CHINOIN GYOGYSZER-ES VEGYESZETI TERMEKEK GYARA RT. 3 May, 1966 [3 May, 1965], No. 19526/66. Addition to 1,142,981. Heading A5B. [Also in Division C2] Pharmaceutical compositions having antidepressive, metabolism-increasing and MAO- inhibiting activity comprise an optically active compound of formula I: wherein R<SP>1</SP> is a C 1-5  alkyl group, R<SP>2</SP> is a propyl, propenyl or proynyl group which may be substituted by a hydroxy group or halogen atom or, if R<SP>3</SP> and/or R<SP>4</SP> is not hydrogen, R<SP>2</SP> may also be hydrogen, and R<SP>3</SP> and R<SP>4</SP> are each hydrogen, halogen or a nitro, amino or diazonium group, or an acid addition salt thereof, together with a carrier. The compositions may be administered orally, rectally or parenterally and may contain other pharmaceutically active components, e.g. analgesics, blood-pressure decreasing agents, sedatives, anti-inflammatory agents, diuretics, coronary-flow increasing agents or spasmolytics.
Patent GB-185913-A (GB)
Title: Manufacture of aminoalcohols of the quinoline series
Filed: 1921-07-20
Abstract: 2-Phenyl-4-bromomethyl ketone is condensed with dimethylamine, diethylamine, or piperidine and the dialkylaminoketones reduced to aminoethanols by hydrogen and colloidal platinum. 2-phenylquinolyl-4-dimethyl-, diethyl-, and piperido-aminoethanols are thus obtained.ALSO:2-Phenylquinoline-4-carboxylic acid, or a derivative or substitution product, is converted into a 2-phenylquinolyl-4-alkylketone by condensing its ester with a fatty acid ester in presence of sodium ethylate and subjecting the 2-phenylquinoloyl ester so obtained to the ketone hydrolysis; or the nitrile of 2-phenylquinoline-4-carboxylic acid may be converted into the alkylketone by the Grignard reaction.  The aminoalcohol is obtained from the ketone either (a) by reduction of its isonitroso compound, or (b) by halogenizing the alkyl group, condensing the halogen compound with an amine, such as dimethylamine, and reducing the aminoketone so obtained.  The products are more active towards paramaecia than the corresponding non-phenylated bodies.  The following examples are given:-(1) 2-Phenylquinoline-4-carboxylic ethyl ester is condensed with ethylacetate and sodium ethylate and the 2-phenyl-4-quinoloyl-acetic ester hydrolysed by heating with dilute sulphuric acid; the same product is obtained by treating 2-phenyl-4-cyanoquinoline with methyl magnesium iodide and hydrolyzing the addition product.  (2) 2-Phenylquinolyl-4-bromomethylketone is obtained by brominating 2-phenylquinoline-4-methylketone in concentrated hydrobromic acid or organic solvents such as acetic acid; or 2-phenyl-4-quinoloyl acetic ester may be brominated and hydrolyzed in one operation by action of bromine in hydrobromic acid.  (3) 2-Phenylquinolyl-4-methylketone is treated with amyl nitrite and sodium ethylate and the isonitroso compound reduced with zinc dust and formic acid to 2-phenylquinolyl-4-aminoethanol.  (4) 2-Phenyl-4-bromomethyl ketone is condensed with dimethylamine, diethylamine, or piperidine and the dialkylaminoketones reduced to aminoethanols by hydrogen and colloidal platinum, or by zinc dust and formic acid. 2-Phenylquinolyl-4-dimethyl-, diethyl-, and piperido-aminoethanols are thus obtained, in most cases as dihydrochlorides or dihydrobromides.
Patent GB-972156-A (GB)
Title: Improvements in or relating to apparatus for the determination of potential difference
Inventor: CLARK ANTHONY JOHN
IPC: G01R13/00
Filed: 1962-05-22
Abstract: 972,156. Electrostatic meters. DISTILLERS CO. Ltd. May 21, 1963 [May 22, 1962], No. 19571/62. Heading G1Q In apparatus for measuring potential difference, a metal piece, one end of which is magnetised, is pivoted about its centre of gravity about a vertical axis, the unknown p.d. being applied between the metal piece and two electrodes equidistant from the unmagnetised end of the metal piece, and electro-magnetic means apply a force to the magnetised end to maintain the piece in its null position, means being provided for measuring the intensity of the applied force. As shown the unknown p.d. is applied between a horizontal platinum-iridium alloy wire 1 via a vertical Pt-Ir suspension fibre, and the centre of a bias voltage across two plate electrodes 4 between which is disposed a downward-turned end of wire 1. Deflection of wire 1 moves a mirror 7 cemented to wire 1 at its point of suspension thus changing the direction of a light beam between source 8 and a photo-electric system 9. The output from 9 is amplified and modified at 10 and fed to coils 6 which co-operate with a magnet (not shown) of platinum cobalt alloy integrally attached to the other end of wire 1 to apply a restoring force to wire 1. The output from 10 is measured in a recorder 11 which may be calibrated to give a direct indication of the test p.d. Instead of using the photo-electric system, movement of the metal piece may be made to vary the capacitance of a capacitor in the solenoid circuit; or the current to the solenoids may be regulated manually.
Patent GB-478256-A (GB)
Title: Manufacture of halogenated phthalocyanines useful as pigments
IPC: C09B47/10
Filed: 1936-07-14
Abstract: Phthalocyanines are chlorinated or brominated in hot molten phthalic anhydride or a hot molten chlorinated phthalic anhydride by use of elementary chlorine or bromine.  Clear green products p  are obtained.  Halogen carriers may be used.  In examples: (1) metal-free phthalocyanine is mixed with phthalic anhydride, heated to 260 DEG C. and chlorinated; the product may be dissolved in sulphuric acid or chlorsulphonic acid and reprecipitated by pouring into water; addition of antimony pentachloride to the melt gives a yellower product; (2) copper phthalocyanine is chlorinated as above in presence of antimony pentachloride, phosphorus pentachloride or ferric chloride; (3) similar to (1) and (2) using tetrachlorphthalic anhydride and antimony pentachloride; (4) copper phthalocyanine is treated with a stream of bromine vapour in nitrogen in molten phthalic anhydride in presence of antimony pentachloride; (5) and (6) nickel and aluminium phthalocyanines are treated as in (1) in presence of antimony pentachloride.  The products contain from 11--16 halogen atoms per molecule.  Specifications 322,169, [Class 2 (iii)], 360,355, and 461,268 are referred to.