baber/WOPTO huggingface dataset:
Patent GB-1447338-A (GB)
Title: Salts of pyridoxine mono-esters
IPC: C07D491/04
Filed: 1975-04-16
Abstract: 1447338 Pyridoxine mono-esters SOC D'ETUDES DE PRODUITS CHIMIQUES 16 April 1975 15552/75 Addition to 1286161 Heading C2V A process for the preparation of a salt of a pyridoxine mono-ester of formula in which A and A<SP>1</SP> are alkylene radicals or divalent amino-substituted aliphatic hydrocarbon radicals; R<SP>1</SP> and R<SP>2</SP> are alkyl radicals or R1 and R<SP>2</SP> form, together with the nitrogen atom, a heterocyclic ring; Ac represents a pharmaceutically acceptable acid; and n is 1, 2 or 3, comprises blocking the two hydroxyl groups in the 3- and 4-positions of pyridoxine, reacting the compound thus obtained with an acid anhydride of formula converting the resulting acid monoester intermediate into its acid chloride, reacting the acid chloride with a tertiary amine of the general formula HO-A<SP>1</SP>-NR<SP>1</SP>R<SP>2</SP>, reacting the resulting compound with a pharmaceutically acceptable acid to give a pharmaceutically acceptable acid addition salt and removing the group blocking the two hydroxyl groups at the 3- and 4-positions by heating the mono-ester. In examples pyridoxine is reacted with acetone to block the two hydroxyl groups and the (4,3,0)- isopropylidene pyridoxine so obtained is reacted with succinic anhydride and with glutaric anhydride, the products then being reacted with thionyl chloride to obtain the acid chlorides which are reacted with dimethyl aminoethanol and with 4-methyl-1-piperazinyl ethanol; the resulting compounds are reacted with maleic acid, with N-acetyl aspartic acid and with maleic anhydride and the blocking groups removed by heating.
Patent GB-1123181-A (GB)
Title: Improvements in independent superheaters
IPC: F22G5/02
Filed: 1965-04-13
Abstract: 1,123,181. Regulating furnace fuel supply; steam superheaters. NATIONAL STEEL CORP. 13 April, 1965 [14 April, 1964], No. 15674/65. Headings F4A and F4B. An independent steam superheater comprises a coiled tube in a combustion chamber heated by a burner supplied with air at a constant rate, the fuel supply to the burner being adjusted to keep the outlet steam temperature constant. The steam is fed to a helical coil 20 coaxial with the elongated cylindrical combustion chamber 12 at a pressure controlled to maintain a preselected outlet pressure. The flue outlets 16, 18 from the chamber 20 are undampered, and the burner delivers along the axis of the coil 20 from its input end. The superheated steam at a preselected temperature and pressure may be used to control the thickness of the coating formed on metal strip by a hot dip process.
Patent GB-529319-A (GB)
Title: Television automatic amplification control system
IPC: H04N5/52
Filed: 1939-05-26
Abstract: 529,319. Automatic volume control. HAZELTINE CORPORATION. May 26, 1939, No. 15759. Convention date, June 21, 1938. [Classes 40 (iii) and 40 (v)] Bias for automatic gain control in a television receiver is developed from the slope of the trailing edge of the synchronizing signals, and is thus not affected by variation of the average intensity of the carrier due to variation of background illumination. An output from the detector 15 is applied to a limiter tube 21, which only passes a portion of the synchronizing pulses to a transformer 26. The output from the transformer 26, being the time differential of the input, is a measure of the slope of the synchronizing pulse and is rectified by a diode 27 and developed as a control voltage across a circuit 28. 29. This voltage is applied to the control electrodes in one or more of the units 12, 13, 14. The time constant of the circuit 28, 29 is long compared with the fieldscanning period, it may be 1/10 second.
Patent GB-896919-A (GB)
Title: Improvements in, or relating to, connectors for tubes and the like
Inventor: COX THOMAS ERIC
IPC: E04G7/20
Filed: 1959-05-08
Abstract: 896,919. Clamps. BOULTON SCAFFOLDING Ltd. May 9, 1960 [May 8, 1959], No. 15798/59. Class 44. A connector of the divided spigot type for joining scaffold tubes 4, 5 end to end comprises two body portions 2, 3 surrounded by a collar 6; the shank of a bolt 11 passes through registering holes 7, 8 in the collar and in one portion 2 of the spigot and carries a square nut 12 the dimensions of which prevent it rotating within the body portions. When the bolt is rotated the halves of the spigot are expanded between the nut and the end of the bolt. The collar is located by a tongue 10 engaging in a slot 9.
Patent GB-158384-A (GB)
Abstract: 158,384. Davis, H. P. Nov. 6, 1919. Rotary punching-machines. - A combination tool for use in repairing the driving belts and chains of motor-cycles &c. comprises a cutter for perforating a belt, a punch for extracting rivets from a chain, and means for retaining in position while being operated upon the sections of belt and chain respectively. Means are also provided to prevent damage to the cutter after it has passed through the belt. A cutter c for cutting holes in a belt is carried by a screw d passing through one end of a member a having an aperture b adapted to acccommodate V-section belts of several sizes, and a pointed punch i for extracting rivets screws through an abutment h at the opposite end of the member a and is situated midway between two pins g over which the section of chain is placed. A spring-controlled plunger m is mounted in the member a so as to face the cutter c, which, after passing through a belt, meets the pointed end k of the punch and damage to the cutting face is prevented. The screw d is provided with a central passage f to receive the belt cuttings, which may be subsequently removed. The screw d may be replaced by the screw i and the aperture b used for extracting and inserting rivets, a loose bridge piece l through which the plunger m projects being removed in the former operation; or a special screw having an elongated pointed end may replace the screw d for removing rivets from cycle and other chains of small pitch.
Patent GB-885726-A (GB)
Title: Welding low alloy steels
IPC: B23K35/04
Filed: 1958-05-16
Abstract: An alloy steel consists of:  .0,5 - 0,3%.carbon .0,2 - 1,5%.manganese .0,3 - 0,7%.silicon .0,4 - 1,5%.chromium .1 - 4%.nickel .0,03 - 0,6%.molybdenum to a total of 2-5% the remainder being iron and possibly traces of copper, tin, lead, boron, titanium and vanadium. Specification 687,666 also is referred to.
Patent GB-672713-A (GB)
Title: Improvements in and relating to the control of a sequence of operations, particularly of electrical washing machines
IPC: D06F34/30
Filed: 1949-06-15
Abstract: 672,713. Time switches. BRITISH THOMSON-HOUSTON CO., Ltd. June 15, 1949. [June 19, 1948] No. 15956/49. Class 38 (v). [Also in Groups XXIV and XXXV] A control apparatus, e.g. for washing machines, comprises a sequential control for a series of operations, an interval control, means effective during one of the operations for shifting the drive to the interval control, and means effective at the end of the interval for shifting the drive back to the sequential control, a common means being provided for starting the sequential control and setting the interval control. The sequential control comprises a cam drum 14 co-operating with switches 5, similar to those of Specification 636,039, and is driven clockwise by a motor 18 and shaft 17 through gearing 20 ... 25, gear 25 being fixed to the drum 14. The gear 24 is fixed to a spindle 27 pivoted to a gear 26 which is rotatable on the shaft 17 but is normally prevented from counter-clockwise rotation by engagement with a pinion 28. The latter and a gear 29 are rotatable on a spindle 30 and a spring pawl 31 mounted on the gear 29 engages with the pinion 28 so that clockwise movement thereof relative to gear 29 is prevented. Normally, the tip 33<SP>1</SP> of a double-armed lever 33 pivoted at 34 is held in engagement with gear 29 by the engagement of its other end 35 with the edge of gear 25 but when a recess 36 in the gear 25 comes opposite the end 35, e.g. at the beginning of the "wash" period, the lever 33 is moved counter-clockwise by a spring 37 to release gear 29 and lock gear 25. The drum 14 is therefore topped and the gear 26 is now rotated counter-clockwise by the pinion 24 which rolls around the gear 23. After a predetermined and adjustable time an arm 42 carried by gear 26 engages the end 35 of lever 33 which is moved back to its normal position thereby stopping gear 26 and allowing gear 25 to rotate again to resume sequential control. For adjustment of the "wash" period, the arm 42 is preset relative to the end 35 by clockwise rotation of a knob 4, which is fixed to the shaft 17 and, through gears 23, 24, rotates gear 26 clockwise, as permitted by the pawl 31 and latched wheel 29. Counter-clockwise rotation of knob 4 rotates gear 25 and drum 14 clockwise to any required position in the sequence, the pawl 31 and latched wheel 29 preventing the wheel 24 from rolling round the wheel 25. The "wash" period can be set or increased at any point in the sequence, but can only be diminished or eliminated during or at the beginning thereof. Specification 633,054 also is referred to.
Patent GB-228779-A (GB)
Title: Improvements in means for loading cars from bins
IPC: B65D90/58
Filed: 1924-07-03
Abstract: 228,779. Marks, E. C. R., (Freyn, Brassert, & Co.). July 3, 1924. Opening doors and by movement of interconnected doors.-The double-door 19, 17 of a storage bin 13 is operated by a piston carried on the truck to be filled, so that the door cannot be opened unless the truck is in position. The door comprises two members 19, 17 separately pivoted on the. axis 16, the outer member 19 rising first and lifting the main door 17 when the block 22 engages with the angle 21. In the form shown, an arm 23 projecting from the door is lifted by a finger 35 carried by a slider 28 on the truck connected with a piston 30 which is raised by admitting compressed air to a cylinder 31.
Patent GB-1202292-A (GB)
Title: Method and apparatus for internally truing small diameter tubes
IPC: B24B5/40
Filed: 1968-04-03
Abstract: 1,202,292. Grinding. COMPAGNIE FRANCAISE THOMSON HOUSTON-HOTCHKISS BRANDT, and DIAMANT BOART FRANCE. 3 April, 1968 [3 April, 1967], No. 16040/68. Heading B3D. A method of internally trueing or finishing a tube 13 with a diameter which is small with respect to its length, such as a capillary tube of glass or quartz for use in a laser, comprises causing progressive penetration into the tube of a succession of wires 2 under mechanical tension and covered with respectively progressively finer abrasive concretions, the diameter of the wires being respectively progressively larger until the desired nominal diameter for the inside of the tube is obtained and at the same time effecting relative rotation between the tube and wire. In apparatus for carrying out the method, the wire is held between a tension-adjusting device and a stress-limiting device mounted in respective arms of a U-shaped frame 1. The stress-limiting device consists of a clamp 11 for gripping the wire and a ring 10 which abuts a series of resilient discs 9, the wire passing through a grommet 12. The tension-adjusting device comprises a hollow shaft 3 having a split grommet 4 which is closed on to the wire by a ring 5 screw-threaded on to the shaft and engaging a split conical termination 32. Tension is applied to the wire by rotation of a screwthreaded ring 6 abutting the frame 1. The wire is in three parts, the first 21 being of smaller diameter than the tube before machining, the second 22 having a slightly larger diameter than the first part and covered with abrasive, and the third part 23 being of the same size as the second part but not covered with abrasive so as to act as a guide for the finished sections of the tube. Either the tube or the wire is held fixed while the other is moved longitudinally and rotated and the movements may be effected manually or automatically. The abrasive covered section is formed with grooves, channels or a helical groove for enabling the material ground away to be removed. The same operation is repeated with progressively larger wires having progressively finer abrasive until the tube has reached the desired final size.
Patent GB-697461-A (GB)
Title: Improved lubricant additive
Inventor: RAE NORMAN SIDNEY
Filed: 1950-06-27
Abstract: In the preparation of lubricating oil additives, by the reaction of a barium, calcium, strontium, magnesium or zinc, mono- or poly-alkyl phenate with elemental sulphur, the reaction product is freed from unreacted alkyl phenols and other volatile matter by steam distillation below the decomposition temperature of the product, preferably at 120-180 DEG  C., e.g. at 135-160 DEG  C. In preferred modifications a mono-alkyl phenol, preferably a p-alkyl phenol, is reacted with an alkaline earth metal oxide, hydroxide or hydrated oxide in an inert diluent, non-volatile in steam, such as a lubricating oil and in the presence of a minor proportion of a C8-C20 saturated aliphatic alcohol, such as cetyl or stearyl alcohol; sulphur is added in an amount exceeding 2 1/2 times the amount required in the finished product and when sulphurization is complete the mixture is steam distilled at 120-180 DEG  C., preferably at 135-160 DEG  C, until the residual alkyl phenol is substantially all removed or is below the solubility limit in the mixture at O DEG  C., the reaction product being blown with carbon dioxide either before during or after steam distillation.  A preferred product is a sulphurized barium alkyl phenol containing between 3 and 4 per cent of sulphur and between 7 and 10 per cent of barium.  In an example, p-tert-octyl phenol is dissolved in a mineral lubricating oil together with a minor proportion of mixed cetyl/stearyl alcohol and the mixture is blown with nitrogen and mixed with barium oxide at 350-390 DEG  F., followed by the addition of sulphur at 300-350 DEG F., carbon dioxide is then blown in and the mixture is steam distilled at 250-350 DEG  F. to remove volatile matter. Specifications 586,841, 599,729 and 600,825 are referred to.ALSO:A lubricating composition comprises a lubricating oil, preferably a mineral lubricating oil, and a minor proportion of an additive obtained by reacting a barium, calcium, strontium, magnesium or zinc, mono- or polyalkyl phenate such as barium p-iso octyl phenate with sulphur and removing free alkyl phenols or other volatile matter by steam distillation, (see Group IV(b)). Preferably the composition comprises a mineral oil and up to 15 per cent, suitably between 0.5 and 6 per cent, e.g. 2-3 per cent of the additive.  The sulphurization reaction is conveniently carried out using mineral oil as an inert solvent and in the presence of a C8-C20 aliphatic alcohol such as cetyl or stearyl alcohol, in which case the additive is obtained as a concentrate in solution in mineral oil.  An example describes the preparation of a concentrate containing 40 per cent of the additive derived from barium p-tertiary octyl phenate and sulphur in mineral oil.  Specifications 586,841, 599,729 and 600,825 are referred to.
Patent GB-420452-A (GB)
Title: Improvements in or relating to boxes or cans
IPC: B65D43/02
Filed: 1933-06-02
Abstract: 420,452. Vacuum closures for cans. SCOTT & SONS, Ltd., H., James Street Works, and HODGKINSON, T. H., 14, Warwick Square, both in Carlisle. June 2, 1933, No. 16061. Addition to 366,245. [Class 125 (iii)] The parent Specification describes a can &c. of the type having an annular depression adjacent the rim of the lid to facilitate removal by a coin and with an annular recess d to locate the gasket.f. The present invention provides a sloped wall k<2> in the can so that the coin gives the lid a a much greater lift and effectively breaks the vacuum.
Patent GB-403114-A (GB)
Title: Improvements in or relating to devices for recording or reproducing sound films
IPC: G03B31/02
Filed: 1932-06-08
Abstract: 403,114. Sound recording and reproducing apparatus; associated working with kinematograph. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhovon, Holland. June 8, 1932, No. 16192. Convention date, June 9, 1931. [Class 40 (ii).] The speed of a sound-film is kept constant at the sound-control point 22 by means of a filmdriven speed regulator 18 which has a definite speed-braking force characteristic curve and is located in the vicinity of the sound control point, and the speed of the film portion before and behind the sound control point is regulated in accordance with the difference in speed at these points and at the sound control point. The invention is described as applied to films bearing sound records only, and also both sound and picture records, and the apparatus in the latter case is substantially similar to that described in Specification 383,214. The speed regulator 18, which is a centrifugal governor, is located before the sound control point 22 and is driven by gearing from the film-driven roller 13. Behind the guide the film is formed into a loop 30 and is kept at constant tension by a roller 29 mounted on a spring-controlled lever 32. This lever 32 is provided with a pin 35 which carries a contact member 37 adapted to co-operate with a contact member 40 vibrated by a disc 38 eccentrically mounted on the shaft 17 of the governor 18. The contacts 37, 40 are connected in the circuit of the motor driving the film and periodically short circuit a resistance included in the motor circuit. The roller 29 controls the operation of the contact member 37 and varies thereby the period of time during which the resistance is short circuited and therefore varies the speed of the motor. The contact member 40 need not necessarily be vibrated by the shaft 17. If desired, a separate motor may be provided for driving the film portions before and behind the point 22, and a loop control device may be provided for controlling the speed of each motor, or of one motor only, the speed of the other motor, in the latter case, then being regulated from the first motor by a suitable synchronizing arrangement. The guide at the sound control point may bo curved, as shown, or plane and positioned in such manner that the film during its travel is bent at this point in its longitudinal direction and bears against the guide. The sound-reproducing apparatus may be united with the amplifier to form a unitary apparatus, which may be replaceable and adapted for use with devices in which picture projection occurs before or behind the screen and with films on which the sound record is positioned to the right or left of the pictures. The Specification includes a number of other features that are described in the abridgment of Specification 383,214, which should be referred to.
Patent GB-258654-A (GB)
Title: Improvements relating to the conversion of sound into electrical pulsations
IPC: H03C1/50
Filed: 1925-06-23
Abstract: 258,654. Rickets, W. J. June 23, 1925. Systems modified for using condenser tele phones.-Sound is electrically reproduced by means of a circuit 2 maintained in oscillation by a valve 3 energized by a high-tension battery 10 and a condenser microphone 1 connected in a low-loss circuit adjusted to resonance, or nearly so, with, and coupled to, the oscillatory circuit, the apparatus being so arranged that low-frequency currents pass through a transformer 8 or other energy-utilizing device connected in the anode circuit of the valve. According to modifications, the oscillatory circuit is coupled to the reaction coil through two tuned circuits acting in opposition and one containing the microphone; the two opposing coupling circuits are connected to the central diaphragm of a differential condenser microphone, the two outer electrodes of which form part of the respective opposing circuits; the oscillatory circuit is coupled to the reaction coil partly directly and partly through a tuned circuit containing the microphone; two grid oscillatory circuits are used, one of which is tuned by the microphone. Specification 258,643 is referred to.
Patent GB-497029-A (GB)
Title: Improvements in connection with ventilators
IPC: F24F13/06
Filed: 1937-06-11
Abstract: 497,029. Ventilators. MUSGRAVE, J. L., and CRITTALL & CO., Ltd., R. June 11, 1937, No. 16221. [Class 137] A ventilator fitting comprises a number of flat multi-sided plates spaced apart vertically and each having an opening, the external dimensions of one plate being approximately equal to the dimensions of the opening in the plate or duct next above it. Figs. 1 and 2 show a number of spaced apertured plates a of triangular form supported by midfeathers b from a member d which fits into the mouth of an air duct. In modifications, the plates may be square, rectangular, or hexagonal in shape. Figs. 7 and 8 show one square, and four rectangular plates. By varying the size of the openings in each plate relative to the external dimensions of the succeeding plate below it, the direction of the discharge from, or inflow of air to the ventilator may be varied, and an inflow caused to the spaces between the lower plates, while an outflow takes place between the upper plates.
Patent GB-253721-A (GB)
Title: Improvements in or relating to building blocks
IPC: E04B2/14
Filed: 1925-06-24
Abstract: 253,721. Downes, G. H. June 24, 1925. Bricks, special shapes of. - Hollow building blocks of the kind having interengaging projections and recesses and open tops and bottoms are formed in one or more sides with through holes 29 which are open to the interior of the block and are engaged by projections 28 on the sides of adjacent blocks, and a concrete filling is provided when the blocks are assembled. The blocks may have dovetail recesses and projections 29, 28, as in Fig. 4, which extend downwardly for half the depth of a block, and the sides 24, 25 extend downwardly to engage in the open tops of the blocks in the course beneath, or the blocks may, as in Fig. 11, have circular projections and recesses 93, 92, and have the sides 24, 25 provided with arch-shaped openings 94. The blocks may be additionally connected by nuts and bolts. The upper edges of the transverse sides of the blocks may be recessed to receive metal tie-rods. Projecting flanges 26 may be provided on two of the outer edges of the blocks to provide a covering at the joints. The longitudinal sides of the blocks may be extended vertically, as in Fig. 8, to form a channel 40 in which the frame members of the roof may be bedded by means of concrete. The lowest course of blocks is provided with an enclosed bottom 30, Fig. 8, opening 35 being provided in the transverse sides. U-shaped flanges 45, Fig. 8, may be provided on the sides of the blocks for the reception of floor joists, or holes and slots 46, Fig. 2, extending downwardly from the upper edges may be provided for such purpose. At door and window openings blocks of right-angled form 48, Figs. 6 and 7, are provided. Partition walls may be connected to the outer walls by providing in the centre of a longitudinal side of an outer wall block, a dovetail recess adapted to be engaged by a corresponding projection on a partition block, or recesses 55, Fig. 10, provided in the sides 51, 52, of the outer wall blocks may be engaged by projections 54 on the partition blocks 53. The blocks 53 may have projections 56 on their lower faces. Projections 28 and recesses 29 on partition wall blocks are adapted to engage with chimney blocks 14, Fig. 2.