baber/WOPTO huggingface dataset:
Patent GB-1072834-A (GB)
Title: Improvements in or relating to the preparation of o,s-bis(alkoxycarbonyl)thiamine derivatives
IPC: C07D415/00
Filed: 1966-01-12
Abstract: O,S - bis - (alkoxycarbonyl) - thiamine derivatives are prepared by reacting an S-alkali metal salt of thio-type thiamine with 1.0 to 1.2 mol. equivalent of a pyrocarbonic acid diester of formula <FORM:1072834/C2/1> where R is an alkyl group of 1 to 5 carbon atoms, in an aqueous medium at below room temperature to give an S-alkoxycarbonylthiamine of formula <FORM:1072834/C2/2> and reacting this with a further 1.0 to 1.2 mol. equivalent of the pyrocarbonic acid diester in the presence of 1.0 to 1.2 mol. equivalent of an alkali metal hydroxide in an aqueous medium at below room temperature to give a O,S-bis-(alkoxycarbonyl) thiamine of formula <FORM:1072834/C2/3>  In examples the S-sodium salt of thiol-type thiamine is reacted with diethyl pyrocarbonate and with dimethyl pyrocarbonate, and sodium hydroxide.
Patent GB-675036-A (GB)
Title: Improved discharge circuits
IPC: H02M1/02
Filed: 1950-01-19
Abstract: 675,036. Waveform changing. BRITISH THOMSON-HOUSTON CO., Ltd., and MELVILLE, W. S. Jan. 19, 1950, No. 1474/50. Class 38 (ii). In a discharge circuit wherein a saturable cored inductor P is connected in series with the primary winding of a pulse transformer T1 and both are connected across a condenser C and a supply to generate pulses on saturation of the reactor and discharge of the condenser, a ballast resistor R is connected in the trans- 'former primary circuit and the transformer is arranged to saturate by a voltage time integral achieved after a predetermined maximum time for breaking down of the load circuit. Thereby, respectively, the resistor is common to all load circuits, which may be the ignitors of ignitron values V1, V2, and the transformer saturation has a switching effect to allow discharge of the condenser C should a load circuit fail. Specifications 666,574 and 666,575 are referred to.
Patent GB-157838-A (GB)
Title: Improvements in electrical connections and switches for enabling an electric currentconsuming device to be used on circuits of different voltages
IPC: H01H9/00
Filed: 1921-01-10
Abstract: 157,838. Heilbrun, R. Feb. 18, 1914, [Convention date]. Switches.-In order that a current-consuming device, such as a heating-resistance, may be used with two different net voltages, the device is divided into four equal sections which are placed in parallel for the lower voltage, while two pairs of sections in series are connected in parallel for the higher voltage. For this purpose a rotary switch comprising relatively-movable members i. k is used, the switch being constructed in accordance with Specification 24003/11. Each member of the switch is provided with six contacts arranged in a circle. The contacts 1, 2 of the member i are connected to each other, to the middle point a of the consuming device, and to the positive lead f, while the contacts 3, 4 are connected to the negative leads g, h. The contacts 1<1>, 2<1> of the member k are connected to the ends b, c of the consuming device; and the contacts 3<1>, 4<1> are connected to the intermediate points e, d. The remaining contacts 5, 6, 5<1>, 6<1> of the members i, k are dummies. In the position shown, the four sections of the consuming device are placed in parallel. By rotating the member i through 60 degrees, the consuming device is divided into two sections a b, a c connected in parallel.
Patent GB-752562-A (GB)
Title: Improvements in diaphragm valves
IPC: F16K7/12
Filed: 1954-01-20
Abstract: 752,562. Elastic valves. KAUFMANN, A. E. Jan. 20, 1954, No. 1668/54. Class 135. In a diaphragm valve having a resilient diaphragm of hemispherical ellipsoidal, or similar shape with a substantially circular flange at its upper edge, the diaphragm in its open position is thinnest adjacent the flange and, gradually increases in thickness up to a maximum along the vertical axis of the diaphragm, and in the closed position, is of uniform thickness, the diaphragm engaging surface of the compressor or actuating plunger which operates the diaphragm positively in both directions conforming substantially to the adjacent surface of the diaphragm. Figs. 1 and 4 show a valve with a hemispherical diaphragm b<SP>10</SP> having a flange b<SP>11</SP> clamped between the valve casing a<SP>10</SP> and a cover h<SP>10</SP> in which is rotatably mounted a screwed spindle j<SP>10</SP> bearing a handwheel l<SP>10</SP>. The compressor or actuator d<SP>10</SP> has a threaded opening dll to receive a screw c<SP>10</SP> the head of which is embedded in the diaphragm. The spindle j<SP>10</SP> carries a nut e<SP>10</SP> non-rotatably mounted in the actuator d<SP>10</SP>. The latter is itself prevented from rotation by projections engaging vertical grooves in the cover h<SP>10</SP>. In a modification, the diaphragm is ellipsoidal and has its major axis transverse to the general direction of flow through the valve. The diaphragm may also be of oval shape.
Patent GB-251003-A (GB)
Title: Improvements in and relating to steam generators
IPC: F23M5/08
Filed: 1925-01-20
Abstract: 251,003. Robson, P. W. Jan. 20, 1925. Patent abandoned on opposition. Pulverulent, liquid, and gaseous fuel furnaces. -In a steam generator having a combustion chamber enclosed by water-tubes, an upper drum is connected by downcomers arranged outside the combustion chamber to a water drum disposed at the bottom of the chamber and on the same side so that the whole length of the drums is available for the downcomers. The side, top and bottom walls b, b<1>, d, e are formed of banks of tubes f, f<1>, i, h joined to drums A - - D, the top and bottom banks i, h being inclined in opposite directions. Downcomers m connect the water space of the drum C to the drum D vertically below it, and the steam spaces of the drums A, C are connected by a pipe k. The end walls c are formed of similar banks of tubes n joined between drums E, connected with the drums A, C by pipes o, and lower isolated drums F, the circulation in these banks of tubes being upwards in the tubes nearest the combustion space and downwards in the remainder. The walls are completed by thin fire-brick r, and burners t for pulverulent, liquid or gaseous fuel are arranged over the areas of the top wall, the combustion products passing down over further steam-generating tubes v connected to headers u, u<1> fed from the lower drums B, D and through an air heater or economizer H. In a modification, each wall is lined by a single row of tubes, the tubes of the end walls c having lower headers connected by separate external downcomers to the drum C and upper headers connected to the drums C, D. Air inlets are arranged in the walls of the combustion chamber and additional burners may be provided in the side or end walls. Specification 230,102 is referred to.
Patent GB-1074413-A (GB)
Title: Micro-tensile testing machine
IPC: G01L5/00
Filed: 1966-01-14
Abstract: 1,074,413. Measuring electrically. P.R. MALLORY& CO. Inc. Jan. 14, 1966 [Feb. 24, 1965], No. 1834/66. Heading G1N. A device for testing the tensile properties of fibres includes a fixed rod 37 and a movable rod 29 between which fibre 13 is secured, the movable rod being attached to a movable capacitor plate 26 associated with a fixed capacitor plate 25 consisting of two semicircular plates 25' to which electrical connections are made at 22, 23. The device is initially placed horizontally in a cradle (16), Fig. 2 (not shown), the ends of the fibre are inserted in capillary tubes 14, 15 and cemented in place, and the dimensions of the fibre are measured by means of a microscope. The device is then removed from the cradle and is suspended by hook 17 from one end of the beam of an analytical balance, Fig. 1 (not shown). Chuck 35, which holds rod 29 steady when in cradle (16), is then released and a capacitance bridge including capacitor 25, 26 is balance under zero load. A load may be applied by adding weights to the balance pan (20), or by gradually lowering a 100 gm. chain (19) either by means of a crank (27) or a motor (not shown). The motor may also drive a potentiometer slider to give a voltage indicative of load. The load signal and the output from the capacitance bridge may be combined, by way of adjustable networks compensating for variations of fibre length and cross-section, in an X-Y recorder providing a stress-strain curve. A direct reading capacitance meter may be used instead of a bridge. A heater may be provided around the fibre so that measurements may be made at elevated temperatures. The device may be used for testing metal or ceramic whiskers, natural fibres such as silk, cotton and hair, or organic fibres. It may also be used for classifying meat tenderisers by testing the properties of the meat fibres after action of the tenderiser.
Patent GB-742063-A (GB)
Title: Improvements in and relating to the manufacture of tungsten filaments
Inventor: SMEATON THOMAS FREDERICK
IPC: H01K3/02
Filed: 1953-01-22
Abstract: A method of heat treating coiled tungsten filaments for use in electric lamps consists of heating the coiled filament in a controlled atmosphere of hydrogen or in a vacuum to relieve strains induced during coiling and cooling the filament in an atmosphere of an inert gas.  The filaments may be placed in tungsten boats and heated to 1,400-2,000 DEG C. in an atmosphere of water-saturated hydrogen, the boats being then pushed into a cooling chamber containing an inert gas, or heating may be performed in a vacuum of 0,1 micron and the vacuum broken by the introduction of the inert gas.  For filaments for gas filled lamps the inert gas may be dry, oxygen-free argon, and for vacuum lamps dry, oxygen-free nitrogen.
Patent GB-1492272-A (GB)
Title: Centrifugal compressors
IPC: F04D25/02
Filed: 1975-01-16
Abstract: 1492272 Centrigugal compressors COMPA1R INDUSTRIAL Ltd and EJ POOLE 16 Jan 1975 [31 Jan 1974] 1902/75 Divided out of 1492271 Heading F1C A centrifugal compressor having one or more stages has impellers driven via intermeshing input gears 43, 44, the number of teeth on the gears being in the ratio 5n : 6N where n is 1 or 2 N is 1 or 2. Gear 43 may be driven directly by a steam turbine. Alternatively, gears 43, 44 may be driven by an electric motor via a shaft 21 and an epicyclic gear train disclosed in the main Specification, the casing of the epicyclic gear train, which is bolted to wall 32, being located in one of two positions so that either gear 43, 44 may receive drive from the gear train output shaft 27. The speed of each impeller will remain the same either when using a speed ratio of 5 : 6 and when one of the input gears receives drive from a 2-pole 50 Hz motor or when the other input gear receives drive from a 2-pole 60 Hz motor; or when using a speed ratio of 5 : 12 and when one of the input gears receives drive from a 2-pole 50 Hz motor or the other input gear receives drive from a 4-pole 60 Hz motor; or when using a gear ratio of 10 : 6 and when one input gear receives drive from a 4-pole 50 Hz motor or when the other input gear receives drive from a 2-pole 60 Hz motor; or when using a speed ratio of 10:12 and when one input gear receives drive from a 4-pole 50 Hz motor or when the other input gear receives drive from a 4-pole 60 Hz motor.
Patent GB-364862-A (GB)
Title: Improvements in and relating to machines for labelling bottles and other containers
IPC: B65C9/46
Filed: 1931-01-20
Abstract: 364,862. Printing-machines. MERCER, C. A. and PURDY PATENT MACHINERY CO. (1930), Ltd., 10, Euston Building, George Street, London. Jan. 20, 1931, No. 1904. [Class 100 (ii).] Printing on labels; inking - apparatus.- Dating - mechanism for use on labelling- machines, more particularly of the kind in which the label is held by a pivoted finger while wipers attach it to the bottle &c., comprises a pivoted type-holder, and an inking- pad on an eccentrically-pivoted interconnected lever. The type-holder 13 is mounted on the lever 10 carrying the pad 11 which engages the central part of the label y while its sides are wiped; the inking-pad 21 is mounted on the lever 18 provided with a cam slot 19 in which rides a projection 22 on the lever 10.
Patent GB-1161064-A (GB)
Title: Rolling Mill.
Inventor: ADAIR JAMES RICHARD
IPC: B21B13/06
Filed: 1966-01-14
Abstract: 1,161,064. Rolling. UNITED ENG. & FOUNDRY CO. 16 Jan., 1967 [14 Jan., 1966], No. 1971/66. Heading B3M. A rolling mill comprises vertical rolls 16, 17 mounted in chocks 18 with screw adjusting means 19 and drive means for each roll which is pivotally mounted on the mill housing with the pivotal axes 32 displaced from the vertical plane through the rolls. Each roll has a vertical spindle 24, 25 keyed to it with a toothed end 26 which meshes with the sleeve extension 27 of a gear 28. The gear 28 engages a pinion 41 which is connected through mitre gears 44, 45 to a common drive shaft 46. The gear 28 and pinion for each roll are mounted in a housing 31 which is pivoted about the axis 32 so that when the roll gap is adjusted the housings 31 are moved simultaneously by screws 34 connected to the screws 19 by shafts 36. Cylinder assemblies 23, 40 are provided to urge the chocks 18 and the housings 31 against the screws 19, 34 respectively. The rolls 16, 17 can be removed from the mill by moving the housing 31 to their innermost position and disconnecting the spindles 24, 25 from the rolls.
Patent GB-868086-A (GB)
Title: A clip device for nuts, bolts and like fasteners
IPC: F16B37/04
Filed: 1958-01-21
Abstract: 868,086. Anchor-nuts; spring clips. ZIEHR, W. Jan. 21, 1958 [Jan. 22, 1957], No. 1998/58. Classes 44 and 89(1). [Also in Group XXII] A spring clip 1a, Figs. 1, 3, adapted to hold a nut body 14, bolt head &c., to form an anchornut &c., comprises a base 1 with aperture 2 and bent-up guides 5, 6, joined by a bend 5a to a cover 7 formed by arms 10, 11 which open to receive the body &c., through a restricted opening 71. The base may have a part 19 to hold the clip to a workpiece or hold a washer below the nut body, or have holes for riveting or screwing the clip to a workpiece. In another arrangement, the arms are interconnected at their free end 82, Fig. 6 of cover 7 and the restricted opening 80 is formed through the bend 18.
Patent GB-1450152-A (GB)
Title: Dry-cleaning composition and process
IPC: D06L1/04
Filed: 1973-01-15
Abstract: 1450152 Dry-cleaning composition IMPERIAL CHEMICAL INDUSTRIES Ltd 4 Jan 1974 [15 Jan 1973] 2030/73 Heading C5D Dry-cleaning compositions comprise a solution in a halogenated dry-cleaning solvent of a polyurea containing at least two urea groups and at least two groups each of which is an alkyl, alkenyl or alkapolyenyl group containing at least 8 carbon atoms. The polyureas may be those described in and prepared by the processes of Specification 1,313,745. The compositions may contain up to 5% of water by weight, based on the halogenated hydrocarbon solvent, a stabilizer, an antioxidant, a corrosion inhibitor and a surface active agent such as a salt of a compound of formula wherein R and R 1  each is H or alkyl or aryl, and R 2  and R 3  each is alkyl, aryl, alkenyl, aralkyl or a C 7  to C 13  cycloaliphatic group. The halogenated hydrocarbon may be perchlorethylene, trichloroethylene, methylene chloride, 1,1,1 - trichloro - ethane or 1,1,2- trichloro-1,2,2-trifluoroethane. Reference has been directed by the Comptroller to Specification 1,313,745.
Patent GB-494066-A (GB)
Title: Improved apparatus for the manufacture of rubber threads
Filed: 1938-01-21
Abstract: 494,066. Rubber threads. DIEDERICH, W. Jan. 21, 1938, No. 2043. [Class 70] [Also in Group VIII] Apparatus for cutting rubber threads from a cylindrical tube has mechanism for mounting the tube on a cylindrical mandrel of slightly larger diameter than the diameter of the unstretched tube. As shown, the mounting system comprises four parallel arms 1-4 carried by supports 5-8 sliding in radial slots in a plate 9 forming part of a sliding carriage 15 adapted to be moved along the bed of the lathe-like machine. The arms can be moved radially by suitable mechanical means. To mount the rubber tube on the mandrel 25, the carriage is moved sideways clear of the mandrel, the arms are moved inwards, a loose bar 22, Fig. 2, is placed on each arm, the rubber tube is slipped over the bars, the arms. are moved outwards to expand the tube and the carriage is traversed to place the tube over the mandrel. The bars 22 are then anchored to the mandrel by inserting pins through holes 26 in the bars into holes 27 in the mandrel and the carriage is moved aside so that the mandrel is sheathed with the tube. The bars 22 are then withdrawn. In the cutting operation the mandrel is rotated and the cutting is effected by one or several spring-pressed. pivoted blades 28 mounted on a carriage 30 adapted to be moved along by a feed screw 31.
Patent GB-1387741-A (GB)
Title: Display devices including bracket-like article supports
IPC: A47B57/54
Filed: 1972-01-17
Abstract: 1387741 Brackets D MAXWELL 12 Jan 1973 [17 Jan 1972] 2083/72 Addition to 1311960 Heading A4B An article support comprises an upright 1 with a planar front face 2 and longitudinal grooves 7 along its side edges, an article support bracket 21 or 23 for mounting on the upright 1, and a clamp 9 having ridges 19 to engage in the grooves 7 and a part 11 carrying a screw 16 which when tightened clamps a part of the bracket 21 or 23 between the front face 2 and a part of the clamp 9, the clamp 9 being shaped to permit the clamped part of the bracket to be secured optionally to extend either longitudinally or transversely of the upright 1. The brackets may support a shelf, spotlight or display board. The bracket limbs may be disposed at other than the right angle shown.
Patent GB-1175951-A (GB)
Title: Drive-Tensioning Apparatus
Inventor: BREWER CARL THOMAS
IPC: F16H7/08
Filed: 1968-01-15
Abstract: 1,175,951. Belt or chain-tensioning devices. 0. T. BREWER. 15 Jan., 1968, No. 2141/68. Heading F2Q. A belt or chain tensioner comprises an idler pulley 41 rotatably mounted on an arm 31 which is mounted on a pivot shaft 21 formed with pinion teeth 30 engaging a toothed rack 47 which is urged by a spring 56 into a position whereby the arm 31 is located in a predetermined angular position. The pivot shaft 21, rack 47 and spring 56 are mounted on a base 13 which is adjustably supported on bolts 15, 16. The arm 31 is adjustably coupled to the pivot shaft 21 by co-operating teeth 22, 23 which are maintained in engagement by a bolt 34.
Patent GB-547226-A (GB)
Title: Improvements in or relating to brakes
IPC: F16D51/26
Filed: 1941-02-17
Abstract: 547,226. Brakes. BENDIX AVIATION CORPORATION. Feb. 17, 1941, No. 2176. Convention date, Feb. 21, 1940. [Class 103 (i)] Adjustable anchorage means for the shoes of a brake of the kind in which each shoe anchors at one end or the other according to the direction of drum rotation comprises a fixed member upon one end of which the end of one shoe abuts and in the other end of which is socketed a sleeve in which screws a rod upon which the adjacent end of the other shoe abuts. The sleeve and rod may also serve as a thrust member for operating the shoe engaged thereby. In Fig. 1, the shoes 14, 16 are applied by hydraulic cylinders 26 disposed between each pair of shoe ends and anchor devices at each pair of shoe ends each comprise a, fixed member 42 provided with a piece 40 upon which one end of shoe 16 abuts and a rod 50 upon which the adjacent end of shoe 14 abuts, the rod 50 being screwed into a sleeve 48 seating in a socket formed in the member 42. The sleeve 48 is turned to effect adjustment by a worm-gear 54. In Figs. 4, 5 the shoes are operated at each end by a lever 76 pivoted at 78 on one shoe 16 and engaging through a piece 80 the lower end of the sleeve 148 which slides in the fixed member 142 the thrust of the lever being transmitted to the end of shoe 14 by the screwed rod 150. The lever 76 is engaged by a lever 72 on a spindle 68 mounted in the back plate 12 and carrying an external arm 60. The pair of arms are connected by an operating link 64. Each lever 76 thus moves apart the adjacent pair of shoe ends and one or other of these ends anchors during an application of the brake on the member 142 or on the rod 150 according to the direction of drum rotation. The rod 150 can be turned for adjustment by its toothed head.
Patent GB-1482211-A (GB)
Title: Lintels
IPC: E04C3/02
Filed: 1975-04-17
Abstract: 1482211 Lintels; cavity wall drip trays HENDERSON SAFETY TANK CO Ltd 17 April 1975 [17 Jan 1974] 02297/74 Headings E1B and E1K A hollow lintel e.g. of sheet steel comprises a first elongate limb 2 a pair of spaced coplanar second elongate limbs 3, 4 each extending parallel to and spaced from the first limb and extending at least in part within the lateral extent of the first limb, a pair of elongate webs as 5, 6 extending from opposite edge portions of the first limb to a respective second limb, and at least one strengthening gusset plate 7 within the lintel extending perpendicular to its length and fixed to at least the webs and optionally also the first limb, at least one of the second limbs 3, 4 not extending laterally beyond the first limb. The second limbs may extend in the same or opposite directions from their connections with the webs and one or both of the webs may extend perpendicular to the limbs. Where one of the second limbs extends beyond the first limb it may form part of a damp resistor in a cavity wall and/or arch support. Lintel end bearing plates 8 or a continuous bearing plate may be provided joining the second limbs. A wood or other suitable block 9 may be accommodated on the upper face of the second limbs and mesh or other keying 10 may be fixed to the lintel. In cavity walls one second limb bridges the cavity and may be welded to an angle member 16 fixed to the other leaf (see Figs. 7 to 9, not shown). Specifications 1439590 and 1449815 are referred to.
Patent GB-338802-A (GB)
Title: Improvements in and relating to machines for casting stereotype plates
IPC: B41D3/00
Filed: 1930-01-23
Abstract: 338,802. Winkler, C. Jan. 23, 1930. Stereotype, casting.-In a machine for casting stereotype, of the kind having a mould adapted to be pressed against a valve-controlled opening in the melting-pot, the valve is moved slowly to uncover the opening and more rapidly during the period when the body of the valve overlaps the opening. The machine comprises a mould c adapted to be pressed against the outflow opening of a pot a controlled by a valve b which is moved by means of cranks d, f and link e operated by elliptical gear-wheels g, h from a motor k<1>.
Patent GB-245946-A (GB)
Title: Improvements in and relating to soldering
IPC: B23K3/03
Filed: 1925-01-27
Abstract: 245,946. Beard, J. G. Jan. 27, 1925. Heating by electricity.-An electrode for use in soldering by resistance heating by a current from a secondary battery consists of a battery carbon rod 1 which is provided with a metal cap 2 to which is soldered a flexible lead having a spade &c. terminal and which is held in a split sleeve 8 in a handle 5 of wood, ebonite, &c.