baber/WOPTO huggingface dataset:
Patent GB-867062-A (GB)
Title: Improved clothes washer machine
IPC: D06F34/08
Filed: 1959-06-18
Abstract: 867,062. Control of A.C. motors. GENERAL MOTORS CORPORATION. June 18, 1959 [June 27, 1958], No. 20899/59. Class 38 (3). A clothes-washing machine has a two-speed single-phase induction motor 16 for reciproeating an agitator or spinning a tub to which water is supplied through a thermo-responsive valve. When the tub is rotated, water is passed to a lower chamber from which it is pumped to a drain, Fig. 1 (not shown). When a timer switch 112 closes with a selector switch 51 in a low-speed position, the whole of solenoid 76 is energized through the series-connected main windings 36, 38 of the motor. This moves armature 86 to close contacts 98, 102, and open contacts 104 whereby an auxiliary motor-winding 40 is energized and the windings 36, 38 are connected in parallel to reduce the number of poles. At the same time, only a part of the solenoid 76 is included in circuit. The motor accelerates and its current decreases until the armature 86 is returned to the right and the original circuit is re-established with the main windings 36, 38, in series, the auxiliary winding 40 disconnected, and all the turns of the solenoid energized. An increase of motor current again causes the armature 86 to be moved to the left, so increasing the speed of the motor. When the selector switch 51 is adjusted to the high-speed position and the timer switch 112 closes, the main windings 36, 38 are connected in parallel and only a part of the solenoid 76 is energized. The initial surge of current through the effective turns of the solenoid moves the armature 86 to the left to energize the auxiliary winding 40, the windings 36, 38 remaining in parallel. The motor now accelerates to a predetermined speed at which the armature 86 moves to the right and disconnects the auxiliary winding. When the load on the motor increases, its speed falls and its current increases, so moving the armature 86 to the left to re-establish the circuit in which the auxiliary winding is connected. In another arrangement, the motor 130 has an auxiliary winding 132, high-speed main winding 136, and low-speed main winding 138. When the selector switch 152 is in its low-speed position and switch 112 closes, the main winding 138 and part of the solenoid 168 is energized. Armature 170 is moved to the left so that main winding 136 and auxiliary winding 132 are energized together with a part of solenoid 136. A reduction of current reestablishes the original circuit. When the selector switch is in its high-speed position, the initial circuit includes the main winding 136 and entire solenoid 168. Movement of the armature 170 to the left energizes the auxiliary winding 132 in addition to the winding 136.
Patent GB-149213-A (GB)
Title: Improvements in and relating to thermionic valve amplifiers and generators
IPC: H03F1/08
Filed: 1920-07-12
Abstract: 149,213. Huth Ges., Dr. E. F., and Loewe, S. July 4, 1917, [Convention date]. Thermionic relays.-To prevent " howling " and undesired self-oscillation in thermionic-valve amplifiers and generators, means are provided for maintaining the potential of the anode battery independently of the current consumption, and for preventing self-oscillation in the intervalve transformers due to the mutual capacity of the primary and secondary windings thereof. Fig. 2 shows a typical amplifying arrangement comprising two thermionic valves connected in cascade. Two methods are described of maintaining the potential of the anode battery 1 constant; (a) by the insertion of a parallel condenser 22, Fig. 3, having a capacity of 10-20 microfarads, (b) by inserting such a resistance in parallel with the battery 1 that an increase in the current drawn from the battery results in a very small variation of potential applied to the anodes. Self-oscillation caused by the capacitative interaction between the windings of the intervalve transformers, as indicated in Fig. 2 by imaginary condensers 23 &c., may be avoided by (a) reducing the self-capacity of the transformer windings, (b) winding the transformers so that the reactance therein tends to destroy self-oscillation, or (c) making the selfoscillating circuits 13, 14, 15 and 16, 17, 18, 23 aperiodic or otherwise damping them. Fig. 3 shows a method of carrying out method (c), in which the transformers 14, 17, are auto-transformers wound on closed iron cores, the selfcapacity, inductance, and resistance being so proportioned that the self-oscillating circuits formed are aperiodic. Similar methods may be used to prevent undesired interaction and increase the efficiency of thermionic generators. If it is desired to utilize the oscillations produced in the circuit 16, 17, 18, 23 for heterodyne reception, an adjustable condenser may be inserted in parallel with the imaginary capacity 23 and the circuit tuned to an interfering wavelength. The Specification as open to inspection under Sect. 91 (3) (a) describes a further method of preventing self-oscillation by so arranging the anode circuit connexions and resistances that an increase in current in the anode circuit of the second valve causes no variation in potential of the anode battery, since it is accompanied by a corresponding decrease in the anode current of the first valve. This subject-matter does not appear in the Specification as accepted.
Patent GB-773743-A (GB)
Title: Improvements in the production of pharmaceutically active hexamethylene tetramine complexes
Filed: 1955-07-20
Abstract: The invention comprises the reaction products of hexamethylene tetramine in a mol. ratio of 2 : 1 to 5 : 1 with a saturated mono or diaminopolycarboxylic acid which contains one or two groups of the general formula: <FORM:0773743/IV(b)/1> or: <FORM:0773743/IV(b)/2> The products are made by reaction of hexamethylene tetramine with the amino acid, suitably by stirring the amino acid into an aqueous solution of hexamethylene tetramine until the whole has passed into solution.  Suitable amino acids are iminodiacetic, nitrilotriacetic, ethylene - diamine - N : N1 - tetra - acetic, diamino-diethyl ether - N : N1 - tetra - acetic, diamino-diethylsulphide - N : N1 - tetra - acetic, pyrrolidine - 2 : 5 - dicarboxylic - N - acetic, 1 : 2-ethylene - bis - (N - pyrrolidine - 21 : 51 - dicarboxylic) and 1 : 2-diamino - cyclohexane-N : N1 - tetra - acetic acids.  The products are used in the treatment of urinary disorders.  Examples describe the reaction of hexamethylene tetramine with ethylene diamine tetraacetic acid, nitrilotriacetic acid, 1 : 2-diaminocyclohexane - N : N1 - tetra - acetic acid and ethylene - 1 : 2 : bis - (pyrrolidine - 21 : 51 - dicarboxylic acid).ALSO:Products for the treatment of ailments of the urinary tract comprise the reaction products of hexamethylene tetramine in the molar ratio of between 2:1 and 5:1 with a saturated mono or diaminopolycarboxylic acid which contains one or two groups of the formula <FORM:0773743/VI/1> or <FORM:0773743/VI/2> The products may be used alone in aqueous solution or together with other medicaments such as sodium benzoate, hexamethylene tetramine anhydromethylene citrate or the reaction product of hexamethylene tetramine with camphoric acid.  Suitable amino acids are iminodiacetic nitrilotriacetic, ethylene-diamine - N : N - tetra - acetic, diamino - diethyl ether - N : N1 - tetra - acetic, diamino - diethyl sulphide - N : N1 - tetra - acetic, pyrrolidine - 2 : 5 -dicarboxylic - N - acetic 1 : 2 - ethylene - bis - (N - pyrrolidine - 21 : 51 - dicarboxylic) and 1 : 2 - diamino - cyclohexane - N : N1 - tetra - acetic acids.
Patent GB-625502-A (GB)
Title: Improvements in and relating to electrical contacts or connectors
IPC: F21S4/00
Filed: 1947-08-01
Abstract: 625,502. Couplings. CARR FASTENER CO., Ltd., and CLARK, G. W. Aug. 1, 1947, No. 20998. [Class 38 (i)] A coupling, e.g. a lampholder, comprises apertured metal parts 3, 7, 15, 16 and insulating washers 13, 14, non - rotatably held together by a rivet 12 surrounded by an insulating non-circular sleeve 8 upon which the similarly-apertured parts fit. A radial flange 10 on the sleeve prevents the rivet head 11 contacting the part 3 which is  U-shaped and has arms 2 to engage a threaded lamp cap, the rivet 12 forming the holder central contact. A hook 6 is provided on the part 7 for mounting the holder.
Patent GB-294254-A (GB)
Title: Improvements in or relating to urea-formaldehyde condensates
IPC: C08G12/12
Filed: 1928-07-19
Abstract: 294,254. Budd Manufacturing Co., E. G., (Assignees of Smidth, L.). July 21, 1927, [Convention date]. Grant of Patent opposed. Condensation products of formaldehyde with urea and thiourea.-In the manufacture of ureaformaldehyde condensation products, the initial water-soluble product is dehydrated as far as possible, and then treated with an acid substance, which may be an acid or any other substance having the properties of an acid when in aqueous solution. A small amount of acid substance may be added to the initial condensation product before the dehydration, and thiourea also may be added at the same time. Preferably, slightly acid formaldehyde (2 mol.) is treated with urea (1 mol.), and when the initial condensation is completed thiourea (0.2 mol.) and a trace of acid (e.g. formic acid) are added. The mixture is then subjected to distillation in vacuo, and just before or just after the distillation is completed, a relatively greater amount of acid is added. The product is then cast or otherwise shaped and is finally heated. Reference has been directed by the Comptroller to Specification 278,698,
Patent GB-260703-A (GB)
Title: An emergency brake for motor car, motor bus or lorry
IPC: B60T1/14
Filed: 1926-05-10
Abstract: 260,703. McCoy, W., and Storey, R. T. May 10, 1926. Skid.-Brake mechanism for motor vehicles and including shoes adapted to be pressed against the ground comprises a pair of arms 1 adapted to be rocked by the brake rod 11 about the axle casing and carrying at their lower ends a roller 3 which runs between guides 7 on the suitably curved top plate 8 of a shoe 9 to press the shoe against the ground and so brake the vehicle. A roller 5 carried on shackles on the spindle of the roller 3 bears on the underside of the plate 8 and supports the, shoe above the ground when not in operation. Each shoe is pivoted to a double eye 15 on the end of a lug 12 bolted to an angle iron 13 secured to the propeller-shaft casing and the stay rods. The shoes are provided with detachable wearing parts 10 and mav be fitted with frost studs.
Patent GB-440818-A (GB)
Title: Improvements in or relating to fluorescent material
IPC: G21K4/00
Filed: 1934-07-20
Abstract: 440,818. Fluorescent screens. LEVY, L. A., and WEST, D. W., 31, Shoot-up Hill, Cricklewood, London. July 20, 1934, No. 21333. [Class 98 (i)] A fluorescent material with little afterglow or persistence of latent image, and suitable for the production of X-ray viewing screens, comprises a mixture of zinc sulphide and about 15 to 40 per cent of cadmium sulphide, both in a high state of purity, a small trace of silver with or without manganese as activator, and a minute trace of nickel not greater than about one part in five million as inhibitor of after-glow &c. The sulphides are purified so that the majority of impurities, particularly compounds of the heavy metals such as copper and iron, are absent; and in any event the quantities of impurities present should not exceed one part in a million, excepting nickel which should be present in much smaller proportion. Salts such as ammonium salts which assist in the firing process, and are completely removed therein, are not regarded as impurities in this sense. The activators may be added in the ratio of one part in about 20,000 parts. The ratio of nickel added as inhibitor (including any present as impurity) may be as low as one part in twenty million. The various additions are made in elemental form or as salts at any stage prior to the heating of the sulphides to form the fluorescent material. Specifications 407,318, 410,114, and 424,195 are referred to.
Patent GB-361366-A (GB)
Title: Improvements in or relating to feed water supply systems for boilers
IPC: F22D1/32
Filed: 1930-07-14
Abstract: 361,366. Feed water supply systems for steam boilers. ECCLES, W., 15, High Lane, Chorlton-cum-Hardy, Lancashire, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. July 14, 1930, No. 21334. [Class 123 (ii).] A surge tank 18 between the condenser extraction pump 17 and the boiler-feed pump 11 of a closed supply system is connected to the system by a pipe 19 through which water is admitted to the system -fromthe -tank when the pressure on the boiler side of the feed pump falls below a certain value, and by a pipe 21 through which excess water passes from the system to the tank when the pressure on the outlet of the feed pump rises above a certain value. The flow of water to and from the system through the pipes 19, 21 is controlled by valves 23, 25 operated by the pressure in a supply pipe 16 between the supply main 14 and a boiler 1. A valve 24 in the pipe 20 between the tank and the main 8 receiving the extraction pump delivery opens automatically to admit large quantities of water to the system in the event of the failure of the extraction pump. A valve 26 opens automatically when the pressure in a supply pipe 16 becomes excessive and allows large quantities of feedwater to return to the surge tank. All the feed heaters 9, 10, 12, 13 may be arranged between the extraction and feed pumps. A multi-stage extraction pump of the kind described in Specification 361,389, [Group XXVI], may be used. 'The speed of the pump may be varied in accordance with the water level in the condenser. When a variable-speed feed pump is used, its speed may be controlled by the extraction pump or by the pressure in the feed pipes 16.
Patent GB-533431-A (GB)
Title: Improvements in aeroplane undercarriages
IPC: B64C25/22
Filed: 1939-07-22
Abstract: 533,431. Aircraft landing gear. SOC. D'INVENTIONS AERONAUTIQUES ET MECANIQUES, S.I.A.M. Julv 22, 1939, No. 21350. Convention date, July 26, 1938. [Class 4] [Also in Group XXXII] A retractable undercarriage, which is -decreased in length by mechanical means as it is retracted, is provided with a shock absorber having a liquid chamber connected to an auxiliary receptacle by a pipe provided with a normally closed valve, the valve being opened by the pilot or automatically, when retraction takes place. An undercarriage leg, pivoted to the aircraft at 2, comprises a cylinder 3, filled with oil, in which works a piston 4 connected to a hollow rod 8. A permanently open passage 5 is provided through the piston and other passages 7 are closed by a valve 6 under load shocks. A piston 12 encloses a body of compressed air in the hollow rod 8 to act as the resilient element. An annular space 10, also filled with oil, communicates with a bell chamber 16 through a pipe 14 and a valve 15 which allows free flow to the space 10 but restricts flow in the opposite direction. The top of the cylinder 3 communicates with a chamber 18 in which is a normally closed valve 19, the lower part 24 of the chamber being in communication with the bell chamber at 16. As shown, upon starting a pump 26 to actuate a hydraulic jack for swinging the leg in the direction of the arrow f, a piston 23 in the part 24 raises the valve 19 to allow oil to flow from the cylinder 3 to the bell chamber 16, the hollow rod 8 being caused to telescope into the cylinder 3 by a cable connection 28. Instead of being closed the chamber 16 may be open to atmosphere, but the pressure built up in a closed chamber, although considerably less than the pressure in the hollow piston rod 8, assists in the extension of the leg when the latter is lowered. Specification 425,207 is referred to.
Patent GB-646804-A (GB)
Title: Improved manufacture of castings of steel or steel alloys
IPC: B22D13/00
Filed: 1947-08-06
Abstract: A pattern for making a mould by the lostwax process is made from a mixed wax comprising: paraffin 55 parts, carnauba 30 parts, beeswax 5 parts, ceresin 5 parts, and resin 5 parts.ALSO:Steel or alloy steel produced by the aluminothermic process is poured into a centrifugal mould made by the lost-wax process from refractory material. Materials such as oxides, metal or alloys may be added to the alumino-thermic mixture to vary the composition and temperature of the steel.  To ensure a fluid slag silica, lime, magnesia, sodium carbonate or chloride, calcium carbonate, silicate or fluoride &c. may be added.  The mixture or the mould may be preheated before use. The aluminium used in the mixture may be replaced by an aluminium alloy.  A mixture for producing stainless steel containing 18 per cent chromium and 8 per cent nickel, comprises: magnetic ore, 69 to 71 per cent Fe, 72 lb.; pure aluminium 24 lb. 3 1/2 oz.; calcium carbonate 3 lb. 8 oz.; fluorspar, 4 lb. 8 oz.; sodium carbonate 4 lb. 4 oz.; ferro-chromium, 69 per cent Cr, 31 lb. 12 oz.; nickel 9 lb. 5 oz.; mild, low carbon steel scrap 17 lb. 10 oz.; pure manganese, carbon free, 1 lb. 4 oz.  The resulting alloy has the analysis C 0.05 per cent, Mn 0.88 per cent, Si 0.93 per cent, P 0.025 per cent, S 0.01 per cent, Cr 18.1 per cent, Ni 7.9 per cent, Al 0.05 per cent, Fe the remainder.  The casting may be annealed &c.
Patent GB-462118-A (GB)
Title: Improvements relating to crank mechanisms
IPC: F16C7/06
Filed: 1935-07-27
Abstract: 462,118. Adjustable cranks; connecting-rods. SHEARMAN, C. H. HOWLAND-. July 27, 1935, No. 21430. Convention date, July 27, 1934. [Class 80 (iii)] [Also in Group XXVI] Consists in means for adjusting the throw of a crank and, at the same time, the length of the rod connecting the crank to the part actuated thereby so as to maintain the initial position of the actuated part unaltered. A crank-arm 10 is secured to a driving shaft 12 and forms a slide for a block 14 carrying the crank-pin 15 and adapted to be moved by a screw 18 actuated by a head 25 and pinions 23, 22, Fig. 4. A rod 26 connects the crank-pin to the part 34 to be actuated, and comprises slides 30, 31 for a block 32, a pin 33 on which engages the part 34. The block 32 is moved by a screw 37 having the same pitch as, but of opposite hand to, that of screw 18. The right-hand end of screw 37 has a long pinion 38 secured thereto, and a pinion 39 of the same size and pitch is mounted on screw 18. These two pinions may be brought into gear by a third pinion 40, Fig. 2, mounted on a swinging lever 42, provided with a latch 43 engaging holes in the crankarm 10. To effect adjustment, the crank-pin 15 is brought to right-hand dead centre, Fig. 4, and the pinion 40 swung to engage pinion 38. By rotating head 25 the blocks 14, 32 are moved by equal amounts in opposite directions, the arm 34 therefore remaining at rest. To facilitate the placing of crank-pin 15 on the dead-centre, a spring-pressed latch 51, Fig. 2, is adapted to engage a projection 54 on the crank-arm. A scale which may be of vernier type, is provided at 47, 50.
Patent GB-154978-A (GB)
Title: Method and apparatus for electric signalling through water, for example, between or with ships thereon
IPC: H04B5/00
Filed: 1919-09-01
Abstract: 154,978. Craufurd, Q. C. A., and Wylie, L. O. Doughty-. Sept. 1, 1919. Inductive signalling.-Low-frequency signals are transmitted through water, for example between submarines, by a transmitting-circuit comprising an alternator a supplying an armoured cable c, having capacity with respect to the seawater, and coupled to a tuned telephone circuit d, and are picked up by a receiving-circuit of similar character. It is stated that alternations in frequency in the sending-ship, produced for example by altering the load on the alternator, cause interference in the circuit of the receiving-ship, which may be recognised by " combination tones " in the telephone, or may be detected by a thermionic relay or galvanometer. The cable c may be disposed round the interior of a hull or laid in the sea. The radiating and receiving systems may consist of the ships' lighting-circuits, the alternations in this case being represented by the normal fluctuations of the supply current.
Patent GB-859840-A (GB)
Title: Improvements connected with rotary photogravure printing apparatus
Inventor: HALLEY ANGUS MURRAY
IPC: B41F13/40
Filed: 1958-07-05
Abstract: 859,840. Printing machines. HALLEY & SONS Ltd., J. June 8, 1959 [July 5, 1958], No. 21607/58. Class 100(2) A rotary photogravure printing apparatus of the kind wherein the printing cylinder 6 is supported in a pivotally mounted cradle 1 which can be rocked by ram means to determine the printing pressure, comprises at least one double acting ram X wherein the cylinder 3 of the ram is connected on opposite sides of the piston 4 to a common high pressure air supply line 11 through a control valve 10 so that a relatively high printing pressure is furnished by introducing air under pressure into the cylinder on one side of the piston only whereas a relatively light printing pressure is furnished by introducing air under pressure into the cylinder on both sides of the piston, the magnitude of the light pressure being determined by the difference in the crosssectional areas of opposite sides of the piston. The cradle 1 is pivoted by two corners to the machine frame at A and is connected at the opposite two corners B to connecting rods 5 pivoted to the piston rods 15 of the pistons 4 of two rams X. The lower surfaces of the pistons 4 present a greater area to be acted upon by the pressurized air than do the upper surfaces because the piston rods 15 occupy a part of the upper surface area. The supply line 11 is connected through a manually controlled pressure reducing valve 12 to a source of compressed air. Specification 586,986 is referred to.
Patent GB-1345773-A (GB)
Title: Pharmaceutical composition and a method of reducing mammalian fecundity
IPC: A61K31/135
Filed: 1971-04-19
Abstract: 1345773 Reducing mammalian fecundity BRISTOL-MYERS CO 19 April 1971 [16 Feb 1970 17 Sept 1970] 21786/71 Heading A5B Mammalian fecundity is reduced by administering parenterally or orally to the female mammal a compound of formula:  R<SP>1</SP>NHCH 2 CH 2 OR<SP>2</SP> wherein R<SP>1</SP> is alkyl (C 2-5 ), alkenyl (C 3-5 ), cycloalkyl (C 3-5 ), alkyl (C 1-3 ) cycloalkyl (C 3-5 ) or cycloalkenyl (C 4-5 ) and R<SP>2</SP> is H, C 2-24  alkanoyl or benzoyl or a salt thereof. In preferred active compounds, R<SP>1</SP> is ethyl, n- or iso-propyl, sec-or tert-butyl, cyclopropyl, cyclobutyl, cyclopentyl, 1- or 2-methylcyclopentyl, or cyclopentenyl, R<SP>2</SP> is H, acetyl, hemimucoyl or palmitoyl. The compound may be in the form of its hydrochloride. The compound may be mixed with a carrier and put up in dosage units, e.g. gelatin capsules. The mammal may be a human being, a domestic pet or a farm animal. The compound may be administered after fertilization of the ovum but before implantation.