baber/WOPTO huggingface dataset:
Patent GB-829176-A (GB)
Title: Diamine compounds and means of producing the same
Inventor: ELSLAGER EDWARD FAITH
IPC: C07D337/12
Filed: 1958-06-23
Abstract: The invention comprises compounds of the general formula <FORM:0829176/IV (b)/1> where R represents an alkylene group having 2-6 carbon atoms, R1 and R2 are the same or different and represent alkyl or hydroxyalkyl radicals having 1-5 carbon atoms, or R1 and R2 together with -N< represent a pyrrolidine, piperidine, hexahydroazepine, morpholine, piperazine, pyrrolidinol, or piperidinol radical, and X represents hydrogen, chlorine, or a methyl or methoxy radical; and acid addition salts thereof, including penicillinates (especially a bis-penicillin G and V salt) and a salt of N-acetyl-4-hydroxy-m-arsanilic acid; and the preparation thereof by treatment of 1-halo-4-methyl-7-X-10-thiaxanthenone with a diamine of the general formula <FORM:0829176/IV (b)/2> preferably in pyridine solution; and, if desired, addition of an acid or ammonium salt to the product to form an acid addition salt, or anion exchange of a mineral acid salt by treatment with a metal or ammonium salt of another acid.  The products are useful as antiparasitic agents. Diamines of general formula II above may be prepared by treatment of a dialkylaminoalkylhalide of the general formula <FORM:0829176/IV (b)/3> with aqueous methylamine in the presence of copper powder and potassium carbonate; or by treatment of an amine of the general formula <FORM:0829176/IV (b)/4> with a halo-aliphatic acid methylamide of formula halogen-alkylene-CONHCH3 and reduction of the product with lithium aluminium hydride.
Patent GB-884088-A (GB)
Title: Process for purifying acetaldehyde
Filed: 1960-06-08
Abstract: Pure acetaldehyde is prepared from a mixture containing acetaldehyde, alcohol, formals, olefine oxides and water, such as a product obtained by the partial oxidation of gaseous hydrocarbons from which formaldehyde has been removed, by contacting the mixture with a cation-exchange resin at a temperature of from 66 DEG C. to 110 DEG C., and separating the acetaldehyde.  The olefine oxides are converted to the corresponding glycols by the treatment.  The gaseous products derived from the oxidation of ethane, propane, and butane or mixtures thereof in a continuous process with recycling, and from which formaldehyde is removed by washing with water, are passed through a bed of cation-exchange resin having acidic components such as sulphonic, carboxylic, phosphonic, phosphorous and phenolic groups, e.g., sulphonated cross-linked polystyrene, phenol-formaldehyde groups with sulphonic groups, styrene-divinyl benzene copolymers with maleic anhydride which is hydrolysed, and sulphonated bituminous coal, and the olefine oxides are hydrolysed. The product is then fractionated to yield pure acetaldehyde.  In an example acetaldehyde is obtained from the product of a partial oxidation of propane which is treated with sulphonated polystyrene.
Patent GB-617630-A (GB)
Title: Improvements in or relating to thermionic valve wave translating circuits
IPC: H03B19/10
Filed: 1946-07-06
Abstract: 617,630. Thermionic valve circuits. STANDARD TELEPHONES & CABLES, Ltd., and WINTLE, M. F. July 6, 1946, No. 20236. [Class 40 (vi)] The values of the anode resistor 3 and cathode resistor 5 of a negative feedback amplifier 1, Fig. 1, are adjusted so that the anode voltage/ grid voltage characteristic has a constant negative slope over the lower part of the working range, and a constant positive slope over the rest of the working-range. The circuit may be used as a frequency doubler by biassing the grid to make the anode voltage a minimum with no signal applied to the grid, or the phase of a signal may be reversed when desired by changing the bias voltage. The signal may be fed to the valve through a transformer, Fig. 3 (not shown), the bias voltage being provided by a potentiometer across the anode supply. Two or more frequency doubler stages may be used in cascade, Fig. 4. A cathode follower 13 feeds the first frequency doubler valve 1A, whose anode is connected to the control grid of the second frequency doubler stage 1B, thus automatically providing the proper bias. The circuit may also be used to provide a series of positive output pulses in response to positive or negative input pulses.
Patent GB-148327-A (GB)
Title: An improved process for the treatment of textile fabrics
IPC: D06C29/00
Filed: 1920-07-09
Abstract: 148,327. Ohligser Leinen-und Baumwollweberei P. de Weerth. April 11, 1914, [Convention date]. Drawings to Specification. Processes, compound.-Textile fabric, particularly for use in the construction of tyres, is passed through a moistening - contrivance under an inconsiderable tension in the direction of the warp but free to shrink in the direction of the weft, so that, while the elasticity of the fabric in the warp direction remains approximately unaltered, the elasticity in the weft direction is increased and becomes equal to the former, or approximately so.
Patent GB-640030-A (GB)
Title: Improvements in trigger circuits using electron discharge tubes
IPC: H03K3/37
Filed: 1947-07-28
Abstract: 640,030. Valve relay circuits. BENDIX AVIATION CORPORATION. July 28, 1947, No. 20346. Convention date, Aug. 8, 1946. [Class 40 (vi)] In a trigger relay circuit comprising two gasfilled valves having an impedance in each of their anode circuits and a capacitor connected between the anodes so that when one valve is rendered conducting the other is extinguished, an impedance is inserted in each cathode lead and the stability of performance of the circuit is improved by connecting a further capacitor between the cathodes of the valves. The Figure shows gas-filled valves 10, 12 connected by resistors 20, 46 and capacitor 60 in a triggerpair circuit, resistors 34, 56 and capacitors 38, 59 enabling output pulses to be derived from the cathode circuit which have the same polarity as the triggering pulse applied to the associated grid. Capacitors 36, 58 which improve the reliability of operation of the circuit have such values that the time constant of the cathode RC network should preferably be less than that of the anode circuit. In a modification, Fig. 9 (not shown), the cathode resistor and capacitor are placed in the cathode lead of only one of the valves. In a further modification, Fig. 10 (not shown), the capacitors in each cathode lead are replaced by a single capacitor equivalent to their series combination. Specification 550,405 is referred to.
Patent GB-881342-A (GB)
Title: Agents for influencing plant growth
IPC: A01N63/60
Filed: 1960-06-09
Abstract: A composition for influencing plant growth contains gibberellic acid or a salt thereof and a nucleic acid fission product which is a mixture of purine or pyrimidine bases, nucleosides and nucleotides obtained by the hydrolytic decomposition of yeast nucleic acid.  The preferred compositions contain 10 50 mgs per litre of each of the potassium salt of gibberellic acid and the above mixture.  Potassium nitrate and cobalt salts may also be added.  The mixtures may be applied to lettuces to accelerate the growth of leaves, to fuchsias to produce long stems, to asparagus to increase the number of shoots, to cyclamen to produce earlier opening of the flowers, to old peony plants to produce blossoms, to strawberry plants to prevent virus infection and to kalez carrots and vines to expedite maturity by cutting out dormant periods.  Application is preferably by spraying but may be by solutions or pastes or by injection into the plant. Specifications 794,540 and 806,246 are referred to.  Reference has been directed by the Comptroller to Specifications 783,611 and 844,549.
Patent GB-360827-A (GB)
Title: Improvements in or relating to induction furnaces
IPC: H05B6/10
Filed: 1930-07-05
Abstract: 360,827. Electric induction furnaces. CARPMAEL, A., 24, Southampton Buildings, London.-(Ugine-Infra ; 21, Rue du Drac, Grenoble, France). July 5, 1930, No. 20446. [Class 39 (iii).] Automatic temperature regulation of an induction furnace is effected by using a muffle of magnetic material selected' so that it loses its magnetic properties at substantially the temperature at which it is desired to operate'the furnace. Iron, cobalt, nickel, and their alloys are referred to as suitable materials. If it is desired that the return of magnetic properties should occur at a lower temperature on cooling, ferro-nickels containing 5-25 per cent of nickel or high carbon steels may be employed. The furnace may be provided with an external magnetic circuit. The muffle may comprise a . number . of rings 8 of different materials separated by insulation 9. Different equilibrium temperatures will then occur in the different rings. The turns 2 of the watercooled coil are separated by insulation 6. The Specification contains detailed, information of a furnace using a tungsten steel muffle. Reference has been directed by the Comptroller to Specifications 167,545 and 267,704, [both in Class 39 (iii), Heating by electricity].
Patent GB-255657-A (GB)
Title: Improvements in step-by-step switching apparatus for telephone systems
IPC: H01H63/02
Filed: 1925-08-14
Abstract: 255,657. Coventry Automatic Telephones, Ltd., and Puckette, C. C. Aug. 14, 1925. Selectors.-In order to reduce wear on the terminals of a step-by step switch, in place of double-ended wipers, separate wipers 3, 4 are employed in conjunction with two similar rows of terminals, corresponding terminals being connected together. A larger number of angularly-spaced wipers may be used if it is desired to reduce wear still further.
Patent GB-891143-A (GB)
Title: Improvements in a method of manufacturing a non-woven fibrous sheet
IPC: D04H1/72
Filed: 1958-06-26
Abstract: 891,143. Forming fibre webs. GOLDMAN, J. H. June 26, 1958, No. 20551/58. Class 120(1) [Also in Group VIII] A mass of non-parallel fibres, such as of cotton, asbestos, glass, paper, wood pulp, or other natural or artificial fibres or blends of such fibres, is formed into a web having high tensile strength in every direction in the plane of the web by a method that includes passing the fibres over at least three rollers shielded to confine air currents and operated at progressively higher surface speeds, the last roller rotating in the opposite direction to those preceding so as to deposit the fibres in non-oriented condition on a slowly rotating condenser. A picker lap 10 is fed through feed rolls 11 and over a licker-in 12 to a card cylinder 14 from which the fibres are stripped by a fancy or stripper 16 and thrown on to a condenser roller 17 covered with rubber or wool. Shields 19, 20 enclose cylinders 12, 14, 16, 17. Fibres on the condenser roller 17 pass in contact with a wetting roller 21 to pick up water or a dilute adhesive, such as starch or latex, or a solvent for one constituent of a blend of fibres, or a chemical that will gelatinize or hydrolize the surface of the fibres. From the roller 21, the fibres pass between squeeze rolls 23 and around drying cans 24. An alternative method of removing the fibres from the condenser roller 17 employs a doffer comb.
Patent GB-531229-A (GB)
Title: Method and apparatus for testing piston rings
IPC: G01M13/00
Filed: 1939-07-14
Abstract: 531,229. Measuring pressure of piston rings on cylinder walls. WILLIAMS, C. G., and INSTITUTION OF AUTOMOBILE ENGINEERS. July 14, 1939, No. 20579. [Class 106 (ii] [Also in Group XXVI] Means for measuring the " pressure pattern " of piston rings that is the radial pressure normally exerted by a ring normal to the cylinder surface at various points on its periphery comprises inserting the ring f in a gauge ring a of correct bore and applying fluid pressure at e in a radial direction until leakage occurs between the piston ring and gauge. Oil from a reservoir n is admitted through a cock o to a cylinder g in which is a piston moved by a screw h. The ring is placed in the gauge and the piston moved to deliver the oil under pressure through a non-return valve l and the radial passage e. The pressure under which the oil is delivered is indicated on a gauge i having a maximum pressure pointer which remains in the position reached. When the pressure due to the ring is balanced by the applied pressure leakage occurs and the normal pointer k indicates a sudden fall in pressure. One face of the gauge ring has graduations and the ring may be raised successively from one to another of these and the test repeated. A release valve m returns the oil to the reservoir n.
Patent GB-205902-A (GB)
Title: Improvements in or relating to swinging supports for bobbin holders
IPC: B65H54/54
Filed: 1922-07-27
Abstract: 205,902. Delerue, A. July 27, 1922. Bobbin holders.-In a swinging support for bobbin holders comprising two balls 2, which are mounted in casings 3 and engage the ends of the holder to serve as bearings therefor, the balls are supported by a circular row of smaller balls 8. The casings are secured in spring supports 9 by a, wire collar and are provided with caps 1 secured thereto by friction and a shoulder 5.
Patent GB-1314067-A (GB)
Title: Fluid bearings
IPC: F16C32/06
Filed: 1970-04-29
Abstract: 1314067 Bearings CONSIGLIO NAZIONALE DELLE RICHERCHE 29 April 1970 [29 April 1969] 20625/70 Heading F2A In a fluid bearing pressurized fluid is supplied through conduits 22, Fig. 1, each of which is provided with a restrictor 14 and a non-return valve 15, the latter being connected to its respective pressure-pocket 5 via a port 7 formed in a bearing member 2. Each conduit 22 is connected to a pipe 8 via a duct 20. The pipe 8 extends into a fluid tank 9, via a filter 12 and a pump 10 which is driven by a motor 11. The pipe 8 has a branch pipe leading to a thermometer 13 and a branch pipe 16 which is provided with a manometer 17, a relief valve 18 and a cooler 19 which connects to the tank 9. In use fluid at constant pressure is supplied to the pressure-pockets 5 and a shaft 6 which is mounted in the bearing is suspended by the pressurized-fluid. When the shaft is rotated and generates a pressure greater than the pressure of the fluid supplied by the pump 10, the non- return valves 15 prevent flow-back of the fluid to the tank 9. Used fluid is returned to the tank 9 via a drain-pipe 21. In a modification a pair of pressure-pockets 5, Fig. 2, are connected to a pipe 8 &c., via conduits 23, non-return valves 15 and a self-regulating throttle valve 23. The latter replaces the restrictors 14 and comprises a cylinder 24 having a piston 25 therein which is centred by means of springs 26. Thus the total flow resistance can be controlled to compensate for loads applied to the bearing.
Patent GB-851221-A (GB)
Title: Photographic colour development process
IPC: G03C7/30
Filed: 1957-07-01
Abstract: 851,221. Colour photography. KODAK Ltd. July 1, 1957 [June 29, 1956], No. 20629/57. Class 98(2) An exposed multilayer silver halide material is black and white developed, the developed silver is oxidised and removed, the material is treated with an oxidising agent consisting of (a) a bromine solution, (b) an acid dichromate bath containing alkali metal bromide, (c) an acid solution of a ceric salt, (d) an acid solution of an alkali metal persulphate or (e) a silver removal bleach bath containing dithiac suberic acid to remove fog centres formed in the undeveloped silver halide during black and white development, the light sensitivity of the undeveloped silver halide is restored by treatment with a mild reducing agent, and the undeveloped images are then selectively re-exposed and colour developed. In Example 1 a three layer film with ultra-violet filters between the emulsion layers is so treated using acidified dichromate for removal of the black and white developed silver, bromine water for removal of the fog centres and sodium bisulphite solution as reducing agent to restore light sensitivity of the undeveloped silver halide, after which it is exposed through the support, developed in a cyan coupler-containing colour developer, bleached in ferricyanide and fixed, and is compared with a film of the same kind which is re-exposed and colour developed directly after the black and white development and then similarly bleached in ferricyanide and fixed, to show relative cyan fog densities of À06: À50 in areas of minimum cyan density. Example 2 refers to Example 1 and specifies bleach baths of the types (c) and (d) above, with which it is possible to remove both the negative silver and the fog centres in a single bath, and bisulphite again is used to restore light sensitivity. Sulphites and nitrites are mentioned as further mild reducing agents for the purpose. Specification 718,411 is referred to.
Patent GB-597188-A (GB)
Title: Improvements relating to damping means for gyroscopic apparatus
IPC: G01C19/38
Filed: 1945-08-10
Abstract: 597,188. Vibration dampers. SPERRY GYROSCOPE CO., Inc. Aug. 10, 1945, No. 20655. Convention date, Aug. 10, 1944. [Class 108 (iii)] [Also in Group XX] An eddy current drag device is mounted so as to be operated by two relatively movable members of the universal mounting of a pendulously supported gyroscopic apparatus. Conducting disc 21 is mounted in association with the magnetic field device 11 on frame 9 and is driven by sector 13 secured on the gimbal ring 6 through gears 14 having a large multiplying gear ratio. A similar drag device may be provided between gimbal ring 6 and binnacle ring 7. The magnetic field may be produced electromagnetically with means for varying the strength of the field.
Patent GB-248259-A (GB)
Title: Improvements in dust distributing machines for coal mines and the like
IPC: E21F5/10
Filed: 1925-08-18
Abstract: 248,259. Evans, S., and Jones, W. T. Aug. 18, 1925. Dust distributers.-In a machine for scattering dust, to prevent explosions in mines, of the kind in which dust is carried by a screw conveyer 5 from a hopper 1 to a chamber 6, whence it is scattered by a fan or impeller 9, the operation of the apparatus is effected by a friction drive from the road-wheels 3 of the truck 2 carrying the apparatus. Friction wheels 20 in engagement with the front and rear wheels 3 of the truck are carried at each end of a shaft 18. Loosely mounted on the shaft 18 are a sprocket of the chain 16 which operates the conveyer and a gear 22 which operates the impeller through a train of gears 29, 31, 34, 35. The sleeve carrying the sprocket and gear 22 can be clutched to the shaft 18 by a. sliding, keyed, clutch member operated by a spring-held rod 25. A dust agitator 37 is rocked by a spring-held arm 39 and a lug 40 on the conveyer shaft 10, or may be rotated by suitable gearing. The friction wheel 20 may comprise an annular disc of some fibrous material bolted between the wheel boss and a face plate. The bearings for the shaft 18 may be pivoted and spring held to provide for vertical and lateral movement to allow for wear.
Patent GB-1004292-A (GB)
Title: Improvements in or relating to metering pumps for viscous material containing solid sectile bodies
IPC: G01F11/02
Filed: 1962-05-29
Abstract: 1,004,292. Reciprocating pumps. H. SCHUDT. May 29, 1962 [May 30, 1961; Feb. 9, 1962], No. 20679/62. Heading F1A. A variable-output pump, e.g. for high viscosity materials containing solids and voids, comprises a rotating cylinder 12 housing a rotating and reciprocating piston 11 and having a knife-edged part 26 registrable alternately with an inlet port and an outlet port in a stationary valve plate 15. Cylinder 12 is driven via a gear 3 and a cylinder 2 having a slot guiding a member 5 secured to the piston rod 4 to rotate the piston. Piston 11 is reciprocated by engagement of a roller 7 on member 5 with a cam track 28, 29, 30, 31. Cam track portions 28, 29, Fig. 7, are movable axially to vary the piston stroke by a screw and captive nut operated by a knob 37 having an indicator 38. To facilitate dismantling for cleaning, valve plate 15 and cylinder 12 are resiliently held against a member 9 by a clamp operated by handwheel 25 acting through a resilient insert 24. The valve timing and cam track contour are such that the piston first draws in a volume of material greater than the final metered volume, next discharges part of the material through the inlet to remove trapped air, then discharges the rest through the outlet, and finally withdraws part of the material from the outlet to leave the required metered volume.
Patent GB-840344-A (GB)
Title: Improvements in or relating to electric incandescent lamps for projection purposes
IPC: H01K1/18
Filed: 1957-07-01
Abstract: 840,344. Electric incandescent lamps. PHILIPS ELECTRICAL INDUSTRIES Ltd. July 1, 1957 [July 2, 1956], No. 20690/57. Class 39(2). In an incandescent electric lamp for projection purposes having a concentrated filament lying on the axis of a mirror part 6 of the lamp bulb formed as a body of revolution, e.g. an ellipsoid, the filament 11 is supported only at its ends by supporting wires 9, 10 arranged symmetrically to the axis X-X of the lamp in a plane at right angles to the axis of the revolution Y-Y of the mirror part, the distance between the filament and the end of the pinch 8 holding the supporting wires being at least 0À6 times the distance between the centre of the filament and the position where the pinch is sealed into the bulb. The filament may be displaced into the correct position by a strong impact on the bulb in the direction of the axis Y-Y. Means are provided on the bulb to indicate the plane at right angles to the axis of revolution in which the filament must lie. The line of transition between two glass surfaces of the bulb, e.g. the mirror part and the clear part may be used for this purpose. The bulb may be provided with a domed portion 5 to ensure that deposits formed by evaporation of the material of the filament do not interfere with the mirror surface or with the clear front surface of the bulb. The operating voltage is preferably not more than 24 volts, the energy consumed at the filament being not more than 200 watts.
Patent GB-584032-A (GB)
Title: Improvements in or relating to milking machines
IPC: A01J5/04
Filed: 1944-10-25
Abstract: 584,032. Cow-milkers. FULLWOOD & BLAND, Ltd., R. J., CROFTS, R. B. I., and SKETT, H. E. Oct. 25, 1944, No. 20774. [Class 84] Milk flows into the receiver a from pipe c. A vacuum pump operating along pipe b produces a vacuum in container a and chamber d by means of pipe e. Milk flows out of container a by means of pipe f through flap-valve g so filling up chamber d as the release flap-valve n is held closed by the vacuum. The float h rises, guided by rod j, and eventually lifts piston k carrying pistons m, pipe e is thus closed and opens the second valve, the vacuum so introducing air. The valve g closes immediately and valve n opens so releasing the milk. The float h descends leaving the piston engaged with pipe e by excess air pressure until the combined weight of the float hand rod j pulls the piston down so restarting the operation.