baber/WOPTO huggingface dataset:
Patent GB-634033-A (GB)
Title: Manufacture of a new ester of nicotinic acid
IPC: C07D405/12
Filed: 1948-03-11
Abstract: The tetrahydrofurfuryl ester of nicotinic acid is prepared by reacting nicotinic acid or a reactive derivative thereof such as a halide, anhydride, ester or nitrile, with tetrahydro furfuryl alcohol or a reactive derivative thereof, e.g. a metal derivative by methods known to be capable of producing esters from carboxylic acids and alcohols or their reactive derivatives.  Alternatively, the ester may be prepared by decarboxylating pyridine - 3 - carboxylic acid tetrahydrofurfuryl ester-2-carboxylic acid suitably by heating in the presence or absence of a catalyst. The pyridine-3-carboxylic acid tetrahydrofurfuryl ester-2-carboxylic acid may be obtained by reacting quinolinic anhydride with tetrahydrofurfuryl alcohol and may be decarboxylated directly to the desired nicotinic ester without being isolated.  The product is used as a therapeutic agent.  In examples: (1) tetrahydrofurfuryl alcohol is reacted with nicotinic acid chloride to give the nicotinic acid ester, instead of the acid chloride there may be used the anhydride or the free acid in the presence of hydrogen chloride and instead of the alcohol, the sodium derivative thereof may be utilized and (2) quinolinic anhydride and tetrahydrofurfuryl alcohol are heated together to form the 3-ester of pyridine-2 : 3 -dicarboxylic acid and the temperature is then raised, with the optional addition of copper powder as a catalyst, to effect decarboxylation giving tetrahydrofurfuryl nicotinate.
Patent GB-589474-A (GB)
Title: Improvements in the control of electric supply systems
IPC: H02P9/22
Filed: 1945-03-24
Abstract: 589,474. Automatic control systems. ALEXANDER, D. P., WILLIAMS, B. J., and McKENZIE, R. L. A. March 24, 1945, No. 7499. [Class 38 (iv)) Voltage. As shown, Fig. 1, each of two or more shunt-wound generators 1, 2 connected to common bus-bars and driven by separate power units has a carbon pile resistance 7, 8 controlled jointly by a current coil 15, 16 which acts to reduce the voltage when the loading of the machine increases (e.g. because of an increase in its speed), and a voltage coil 11, 12 controlled by a carbon pile master regulator and acting to increase the voltage when the bus-bar voltage falls. The generator regulators are identical in construction, Fig. 2 (not shown), each having a current coil superimposed on a voltage coil actuating an armature to adjust the carbon pile from an initial minumum resistance fixed by compressing the carbon elements between a spring disc carrying the armature and an adjustable cap secured to the regulator body. In the master regulator as shown, Fig. 3, a carbon pile 17 having a maximum resistance fixed by the tension of a helical spring 43 is adjusted by a lever 34 pivoting on two flat springs 35, only one of which is shown, according to the movement of two arms 33 of an armature 32 within two slots 30 cut in one end of an iron core 29 over which is wound a voltage coil 19 to form an electromagnet 29a.
Patent GB-884624-A (GB)
Title: Improvements in or relating to the prevention of corrosion in ships or other structures
IPC: C09D163/04
Filed: 1959-03-04
Abstract: A brushable, pourable, or trowellable composition for protecting steelwork, for flushing off corners or for paying the seams of deck planking comprises (1) coal tar or a bitumen or black varnish derived from coal tar, (2) an epoxy resin and (3) a polyamide resin (in the examples derived from a polymerized fatty acid and ethylene diamine). The composition may also comprise (4) a filler, e.g. aluminous, Portland or Roman cement, silica, quartz sand, calcium plumbate, china clay, asbestos fibres, glass fibres, silica flour, wood fluor or coconut shell flour, (5) another synthetic resin, e.g. a liquid phenol formaldehyde resule or a partially hydrolyzed vinyl chloride/vinyl acetate copolymer, (6) a solvent, e.g. naphtha, creosote, light petroleum or butyl acetate or (7) an epoxy resin hardener, e.g. an amine.ALSO:A brushable, pourable or trowellable composition for protecting steelwork, for flushing off corners or for paying the seam of deck planking comprises (1) coal tar or a bitumen or black varnish derived from coal tar, (2) an epoxy resin and (3) a polyamide resin (in the examples derived from a polymerized fatty acid and ethylene diamine).  The composition may also contain (4) a filler, e.g. aluminous, Portland or Roman cement, silica, quartz sand, calcium plumbate, china clay, asbestos fibres, glass fibres, silica flour, wood flour or coconut shell flour, (5) another synthetic resin, e.g. a liquid phenol-formaldehyde resule or a partially hydrolized vinyl chloride/vinyl acetate copolymer (6) a solvent, e.g. naphtha, creosote, light petroleum or butyl acetate, or (7) an epoxy resin hardened, e.g. an amine.
Patent GB-1283193-A (GB)
Title: Improvements in or relating to hydraulic control valves
Inventor: ADAMS FREDERICK JOHN
IPC: F15B11/08
Filed: 1969-02-12
Abstract: 1283193 Valves CAM GEARS Ltd 30 April 1970 [12 Feb 1969] 7534/69 Heading F2V Control of a motor 7 is effected with the aid of a pivotable lever 8 the free end of which can act upon either one of two tappets 4E and 6A to move either one of a spool valve 4 or a ball valve 6, respectively. In the lever neutral position, (shown), flow from a reservoir 5A and pump 10 is returned to the reservoir along the flow path 1, 1A, 2A, 4A, 4D and 5. Movement of the lever to the right, as seen in the drawing, displaces the spool valve 4 against the spring bias acting thereon and so causes flow from the pump 10 to take the path 1, 1B, 6 and 7A whilst movement of the lever to the left results in the spool valve member returning to the position shown and in the motor being connected to the reservoir 5A through the path 7A, 6, 1B, 1A, 4 and 5.
Patent GB-749301-A (GB)
Title: Improvements in and relating to electric systems
IPC: H05B41/32
Filed: 1950-03-27
Abstract: 749,301. Supply systems for discharge lamps; condenser arrangements. LACEY, C. L. March 27, 1951 [March 27, 1950], No. 7609/50. Drawings to Specification. Class 38 (4). A condenser for use with a photo-flash lamp is charged through a rectifier from an A.C. source over a transformer having a winding which is tapped and associated with a selector switch to allows pre-selection of the voltage to which the condenser is charged. Triggering of the lamp may be effected by discharging an auxiliary condenser into a transformer associated with the trigger electrode of the lamp, the auxiliary condenser normally being on charge from the main condenser through a resistor in series with the primary winding of the trigger transformer. A neon stabilizer tube maintains constant the voltage applied to the auxiliary condenser. The lamp, trigger transformer and auxiliary condenser may form a unit, one or more such units being readily attachable to and detachable electrically from a main unit including the tapped transformer, selector switch, rectifier, main condenser and neon tube. A further unit may add to the capacity of the main condenser to allow the use of a larger number of lamps.
Patent GB-908437-A (GB)
Title: Improvements in or relating to paint sticks, crayons, or the like
IPC: C09D13/00
Filed: 1959-03-05
Abstract: 908,437. Crayons; holders. BROMOMINT CO. Inc. March 5, 1959 [Dec. 10, 1958], No. 7619/59. Drawings to Specification. Class 146 (3). A crayon consists of a sodium soap of a fatty acid having a titre above 50, a polyhydric alcohol, water and a colouring material, the amount by weight of polyhydric alcohol being greater than the amount of soap and water combined. The polyhydric alcohol may be glycerin or a glycol, and hydrogenated fish oil may be used as a fatty acid. In the example given, 5% of the fatty acid remains unneutralized to give a super-fatted soap. The crayon is contained in a flexible plastic (e.g. polyethylene) tube sealed at one end and is projected to an operative position by pressing on the sealed end of the tube. The tube is sealed at both ends prior to use. Various colour solution formulae are disclosed which are water soluble and harmless if ingested but conventional soap dyes, oil soluble dyes, or inorganic pigments may be used.
Patent GB-287073-A (GB)
Title: Improvements in artificial silk production
IPC: D06M13/224
Filed: 1928-03-12
Abstract: 287,073. Borvisk Syndicate, Ltd., (Assignees of Borzykowski, B.). March 12, 1927, [Convention date]. Threads, treating with liquids.-For the purpose of improving the flexibility and strength of artificial silk, the latter while still on the spinning bobbins, and after washing, is treated with oil, oil emulsion, soap solution, &c., by which treatment the silk is able to withstand twisting, re-winding, &c., without breakage of individual filaments occurring. The silk may be wound on perforated bobbins; and a solution of a soap or a textile oil is suitable for the treatment. Specification 244,324, [Class 2 (ii), Cellulose &c.], is referred to.
Patent GB-853378-A (GB)
Title: Gum-containing masses
IPC: C08B37/12
Filed: 1959-03-05
Abstract: A process for the production of a gum mass containing agglomerates of finely divided gum particles having improved water dispersibility comprises mixing gum particles with an aqueous solution which hydrates the gum at a rate not greater than half the rate at which it is hydrated by water alone, and forming the mixture into said agglomerate-containing mass.  Specified gums are guar, locust bean, honey locust, flame tree, paloverde, tara, cassia, occidentalis, tragacanth, karaya, sassa. arabic, and carboxymethyl cellulose.  The aqueous solution may contain methyl alcohol, ethyl alcohol, isopropyl alcohol, ethylene glycol, propylene glycol, glycerol, acetone, methyl ethyl ketone, methyl isobutyl ketone, acetic acid, citric acid, bone glue, animal glue, sucrose, water soluble or gel-forming starch, the chlorides, carbonates or sulphates of sodium or potassium, calcium chloride, calcium hydroxide phosphoric acid, hydrochloric acid or ammonia.
Patent GB-1060316-A (GB)
Title: Device for production of sheet metal objects of truncated cone shape
IPC: B21D41/02
Filed: 1964-02-25
Abstract: 1,060,316. Stamping; making hollow-ware. OLOF SMITH A.B. Feb. 25. 1964 [March 5, 1963], No. 7749/64. Headings B3A and B3Q. Apparatus for expanding cylindrical blanks (A) to frusto-conical form. Figs. 1-4 (not shown), comprises arcuate jaws (10, Fig. 1) hinged to a bearer (3) about which they are pivoted to expand the blank. The bearer (3) forms the head of a cylinder (1) which surrounds a stationary piston (4) through which hydraulic fluid is fed to raise the cylinder. This raises the blank and the jaws, which are cammed outwardly at their lower ends by contact between rolls (13) on the jaws and a stationary cam (14) supporting the piston. Local depressions (18, Fig. 4) at the narrow end of the tapered article are formed by dies (17, 19) operated by hydraulic cylinders (16).
Patent GB-335267-A (GB)
Title: Improvements in rubber hot water bottles, beds, cushions and like hollow rubber articles
IPC: B29C67/24
Filed: 1929-06-04
Abstract: 335,267. Ayrton, Saunders, & Co., Ltd., and Twells, F. June 4, 1929. Hot-water bottles and like heating apparatus. -A hot-water bottle, bed, cushion, pillow, or like hollow article of rubber having a canvas or like foundation is provided with an inner rubber lining of a different composition from the outer rubber facing, and containing about 5 per cent of carbon black, whereby it has a lower capacity for absorbing water. The inner 'lining may extend up to and over the rim of the filling mouth.
Patent GB-550778-A (GB)
Title: Improvements in methods of welding, soldering and fusing metals together
IPC: B23K11/18
Filed: 1941-06-21
Abstract: 550,778. Welding ; soldering; uniting by fusion. RAKOS, A. June 21, 1941, No. 7836. [Class 83 (iv)] In a process of welding, hard soldering or uniting metals by fusion by a contact electrode of high resistance such as of carbon, graphite or a metallic carbide connected to one terminal of a current source the other terminal of which is connected to the work parts, the electrode is applied to an intermediate member instead of to the work parts and is heated by the passage of the current so as to melt the intermediate member so that it contacts in liquid form with and melts or unites the parts. The heating is thus effected so rapidly that it is completed before any undesired alteration in structure or composition of the parts can be caused by spread of heat by conduction to adjacent parts of the work. The electrode may be bored for the introduction of modifying materials. The intermediate member may be separated from the work and may comprise one or more layers or may comprise flanges on the work parts. It may be melted and heated to a temperature above the melting point of all the work parts or may be of a metal having a higher melting point than the work, e.g. platinum for gold parts and copper for brass parts. In soldering the solder may be applied to one side of a metal strip of higher melting point to the other side of which the electrode is applied. In seam welding chromium-nickel steel or aluminium, the speed of operation is regulated so as to maintain between the electrode and the work in front of the electrode a molten drop. The electrode is arranged at an angle greater than 90 degrees to the direction of movement. In welding aluminium the electrode may be heated to a temperature of 2500‹ C. so that the aluminium oxide formed in the operation may be melted. Two flanged sheets of aluminium may be welded by drawing the tip of the electrode along the upper surfaces of the flanges with the front face of the electrode in continuous contact with the melted portion of the flanges. Specification 498,838 is referred to.
Patent GB-681356-A (GB)
Title: Improvements in or relating to electrically operated steam generating apparatus and the like
IPC: F22B1/28
Filed: 1949-03-23
Abstract: 681,356. Electric liquid heaters. JEFFERIES, F. G. March 23, 1950 [March 23. 1949], No. 7846/49. Class 39(iii) [Also in Group XXXV] An electric liquid, e.g. water, heater comprises a vessel 10 containing one or more electric heating elements 15 and a thermostat 26 operatively connected with the elements 15 and with a valve 23 controlling the water supply to the vessel 10, whereby the immersion or exposure of the elements 15 acts through the thermostat 26 to control both the valve 23 and the means controlling the elements 15. In operation, the heating circuit is switched on by the manual switch 25 with the valve 28 closed, the elements 15 rapidly heating up. At a predetermined high temperature the thermostat 26 acts to de-energize the coil of a main contractor 21 controlling the current supply to the elements 15, which are hence de-energized, and to close an auxiliary contactor 22 controlling the valve 23 which is then opened, the contractors 21 and 22 being interlocked so that when one is open the other is closed, and vice versa. Water is therefore admitted to the vessel 10 and the temperature drops,. the heating circuit being automatically reclosed and the valve 23 shut. The cycle of operations will be repeated should the water level fall. The thermostat 26 is preferably placed immediately above the elements 15, and the vessel 10 is arranged in a casing and above a transformer 11. Steam is led off by a pipe 16 from the vessel 10. Pilot lamps may be provided.
Patent GB-1385911-A (GB)
Title: Electroluminescent devices
IPC: H05B33/14
Filed: 1971-03-24
Abstract: 1385911 Electroluminescence EMI Ltd 17 Feb 1972 [24 March 1971] 7860/71 Heading C4S [Also in Division H1] A double injection electroluminescent device comprises a first material which luminesces at one wavelength and a second material provided in the first material as host lattice, the second material being stimulated to luminescence at a second wavelength by the luminescence of the first material. The first material may be anthracene, the second material, rubrene, perylene, tetracene or 2-21-dihydroxy- 1 - 1<SP>1</SP> - naphthaldiazine. The anthracene may be 99À999% pure with a 50% transparent anode. The anode may comprise a thin layer or grid of Au or an alloy of Se and Te. The cathode may comprise Na or K or an alloy thereof. The anode and/or cathode may alternatively comprise C fibres as in Specification 1,380,417. Encapsulation prevents oxygen and water ingress. Anthracene emits in the 4300  region and 1-10 p.p.m. 2-2<SP>1</SP>-dihydroxy-1-1<SP>1</SP>- naphthaldiazine for example, converts to yellowish green light to which the eye is more sensitive. The converter material is incorporated within the lattice by doping. Exciton and resonance transfer mechanisms are mentioned.
Patent GB-512575-A (GB)
Title: A method of and apparatus for signalling the nature and the place of origin of radiobroadcast transmissions
IPC: H03J7/32
Filed: 1938-03-14
Abstract: 512,575. Electric signalling systems. LAJTA, M., and NEKOLNY, K. March 14, 1938, No. 7913. Convention date, Feb. 26. [Class 40 (i)] [Also in Group XL] A radio broadcasting station is provided with means of modulating the carrier by inaudible frequencies characteristic of 'the nature and origin of different kinds of programmes. Resonance indicators provided at the receiver are operated by the modulation frequencies to provide indications of the programmes data of a plurality of transmitting stations. The signalling frequencies are produced by oscillators controlled by switches which may be grouped in such a manner that the groups correspond to the various kinds of programme and the switches of the group - correspond to the transmitting stations; the switch groups may be arranged in the manner of a map. Specification 512,576 is referred to.
Patent GB-368076-A (GB)
Title: Improvements in or relating to shock absorbers for vehicles, especially for motor vehicles
IPC: F16F7/06
Filed: 1931-03-14
Abstract: 368,076. Shock absorbers. TRESCARTES, L., 88 bis, Route de Montesson, Le Vesinet, Seine-et-Oise, France. March 14, 1931, No. 7914. Convention date, March 19, 1930. [Class 108 (iii).] Frictional vibration dampers for vehicles employing deformable shoes, as described in Specification 333,841, [Class 108 (iii), Springs &c.], are constructed with two such units held at one extremity in a distance piece and free at the other end, the two units being expanded by cam mechanism into engagement with a drum by a connection under the control of the driver. The two deformable units, Fig. 1, each consisting of an undulated steel spring 5 embedded in rubber and faced with frictional material 2, are each secured by pins 11 to an anchoring member 12, their other ends being free so that each unit resists movement of the drum in one direction only. The two units are expanded by a double cam 7 which is rotated through a spring 10 by the squared shaft 9. This shaft extends outside the casing and carries an arm 24, Fig. 4, connected by a wire 26 and rocking lever 28 to the inner connection of a Bowden mechanism 29, the other end of which is operated through worm gearing 33, 34, Fig. 7, adjustable by a small wheel 31. The arm 24 may be adjusted angularly on the square shaft 9. Two such groups may be associated in one casing. The cams 7 may be replaced by an elastic mass exerting a constant pressure on the shoes.
Patent GB-250381-A (GB)
Title: Improvements in automatic and semi-automatic telephone systems
IPC: H04Q3/00
Filed: 1925-03-24
Abstract: 250,381. Standard Telephones & Cables, Ltd., (formerly Western Electric Co., Ltd.), Moir, R. A., and Hartley, G. C. March 24, 1925. Automatic exchange systems.-The busy test relay G of a connector is made two-step so as to be ineffective when busy lines are passed over- Sluggish relay E is energized in parallel with the rotary magnet ROT, and if the wanted line is busy, relay G energizes over its left winding and closes its light contact 5. When relay E falls back, relay G energizes fully over both windings, and connects busy tone and flash battery BF to line relay A. Release relay B is held by intermittent ground IG over its left winding during the periods that relay A falLs back. If the wanted line is idle, test and switching relay H energizes partially over its left winding, and operates its light contact 6, so that it energizes fully and connects up ring- ing current. Ring cut-off relay F is also of the two-step type.
Patent GB-685898-A (GB)
Title: Improvements in roller bearings
IPC: F16C19/24
Filed: 1951-04-06
Abstract: 685,898. Roller bearings. TIMKEN ROLLER BEARING CO. April 6,1951 [Dec. 21, 1950], No. 7990/51. Class 12 (i). A roller bearing comprises an outer bearing member 15 having a conical race 21 and a thrust rib 25 at one end, an inner bearing member 16 having a cylindrical race 20, and longitudinally crowned conical or tapering rollers 17 between the races, running adjacent the rib 25 and being maintained in alignment thereby. The rollers have spherical end faces 24 abutting the thrust rib 25 which has a similar spherical surface. The apex point A of each roller forms the centre for the radius R of the spherical mating surfaces. Axial movement of the inner race 16 is limited in one direction by a thrust rib 19 integral therewith. A double row roller bearing shown in Fig. 3 comprises an outer member 29 having conical races 30, 31 and thrust ribs 32, 33, and an inner cylindrical race 27 having a thrust rib 26 at one or each end thereof. Specification 300,349, [Class 12 (i)], is referred to.
Patent GB-1083604-A (GB)
Title: Servo system suitable for speed control
IPC: H04N5/04
Filed: 1966-02-23
Abstract: 1,083,604. Automatic speed control. AMPEX CORPORATION. Feb. 23, 1966 [March 12, 1965], No.7996/66. Heading G3R. The head drum 11 of magnetic tape recording and reproducing apparatus is driven by motor 13 whose speed is varied in accordance with the frequency output of oscillator 14 which is a direct function of the magnitude of oscillator input voltage. The speed of the motor 13 is stabilized by coarse and fine error signals applied to oscillator 14, but, when the apparatus is switched from one reference frequency source to another, the frequency difference tends to exceed the effective range of the coarse servo whereby the drum may fail to lock with the new reference. To prevent this, the frequency difference is rapidly reduced, by a factor of two, by means comprising frequency discriminator 16 developing a direct voltage in proportion to the frequency of a signal from tachometer generator 17. Discriminator 18 develops a direct output voltage proportional to the frequency of a reference signal from source 12. The discriminators 16, 18 have inversely related sensitivity characteristics whereby increases in input frequencies produce increase and decrease respectively in the output voltages. The error voltage developed at tapping 23 is proportional to the difference between the reference and output frequencies divided by two. The arrangement is such that an increase in reference frequency tends to cause the motor speed to over-shoot the reference value but the feedback discriminator 16 has a degenerative effect to reduce the difference in frequencies.