baber/WOPTO huggingface dataset:
Patent GB-687114-A (GB)
Title: Improvements in the production of acrylamides
IPC: C07C233/09
Filed: 1950-07-13
Abstract: An acrylamide of the general formula CH2=CR1CONH2, wherein R1 is hydrogen or a saturated hydrocarbon group of not more than eight carbon atoms, is prepared by a vapour phase process characterized by passing a lower alkoxy amide of the general formula ROCH2CHR1CONH2, wherein R is a saturated hydrocarbon group of not more than eight carbon atoms and R1 is hydrogen or a saturated hydrocarbon of not more than eight carbon atoms, over lithium phosphate or titania as a catalyst maintained at a temperature of 225 DEG  to 500 DEG  C.  If desired, the catalyst may be supported on a carrier such as silica and the converter containing the catalyst may be a length of stainless steel tube, the inlet end of which may be packed with an inert material, e.g. catalytically inert silica, to serve as a preheater or vaporizer for the starting material.  A diluent may be employed, e.g. nitrogen or vapour of low boiling liquid such as water or an alkanol.  A polymerization inhibitor may be present during the reaction, e.g. N-phenyl-b -naphthylamine, and if the acrylamide is isolated by distillation an inhibitor should be present, e.g. N,N1-di-(b -naphthyl) paraphenylene-diamine. In examples: (1) and (2) acrylamide is obtained by passing b -methoxypropionamide, methanol and N-phenyl-b -naphthylamine, preheated over catalytically inert silica, over heated lithium phosphate, cooling and condensing the products and after addition of di-b -naphthylparaphenylenediamine fractionating under reduced pressure; (3) methacrylamide is similarly obtained using b -methoxyisobutyramide; (4) acrylamide is obtained from b -methoxy-propionamide using titania as catalyst.  Processes for the preparation of acrylamide and its homologues referred to include the reaction of ammonia and amines with acrylyl chloride or b -chloropropionyl chloride followed by dehydrochlorination or with b -propiolactone followed by dehydration, the cracking of dimethylamine from b -dimethylamino N-(orthotolyl) propionamide to form N-(orthotolyl) acrylamide and pyrolysis of N,N-dimethyl-a -acetoxypropionamide to give dimethylacrylamide.
Patent GB-407909-A (GB)
Title: Improvements in or relating to dust and like separators
IPC: B01D47/06
Filed: 1932-06-21
Abstract: 407,909. Washing gas. WAGNER, F. H., The Tuscany, Stony Run Lane, Baltimore, U.S.A. June 21, 1932, No. 17559. Void [Abridged as open to inspection under Sect. 91 of the Acts, July 2, 1932]. [Class 55 (ii).] In separating dust and fumes from gas, e.g. blast furnace gas, the gas is divided into several small streams and each is subjected to a centrifugal dry dust separation ; the streams are joined and the gas is sprayed with moisture, redivided, further saturated, and cooled, e.g. by interchange of heat between the gas and liquid to be sprayed. Gas enters at 33 an annular chamber 32 and passes centrifugally down slotted tubes 35 each with a spiral baffle, dust being expelled into surrounding chambers and collected at the bottom 28 of the casing in water which is maintained at constant level and may be continuously clarified. Gas rises through a central chamber 15 with steam or liquid sprays 63 of desired temperature and passes through a chamber 22 and down tubes 74 with sprays 77 preferably of low temperature. The gas passes over the water 26 and up adjacent tubes 75 with cold sprays 77, to the outlet 24. The tubes 74, 75 may have connected jackets 89 in which the water for the sprays 63 is heated indirectly by the gas. Each pair of tubes is enclosed by vertical baffles 82, and each tube has internal vertical baffles 106.
Patent GB-454885-A (GB)
Title: Improvements in or relating to thimble or loop tube steam generators or water heaters
IPC: F22B1/18
Filed: 1935-06-18
Abstract: 454,885. Water-tube steam boilers. CLARKSON THIMBLE TUBE BOILER CO., Ltd., and FOUNTAIN, H. J., Australia House, Strand, London. June 18, 1935, No. 17568. [Class 123 (ii)] Thimble or loop-tube steam boilers or water heaters heated by exhaust gases from Diesel engines, flue gases from any source, &c. and comprising a central water or steam and water space from which the tubes 2 extend outwardly into an annular gas space 3 have baffles 6 so arranged in an outer casing forming the gas space in relation to a gas inlet as to direct the gases in a gyratory path around it. They may divide the space into sections in series or in parallel in which case the sections may receive gases from separate sources. In the form shown having a tangential inlet at the top and a similar outlet at the bottom, the baffles divide the gas space into a series of superposed sections 7 of diminishing. size communicating through openings 8 bounded by inclined plates 9 extending between opposite ends of adjacent openings. Feed-water is in troduced through a pipe 13 and additional heating means such as coils or electric immersion heaters may be provided.
Patent GB-1016968-A (GB)
Title: Piperazine esters of ª‡-substituted 1-naphthylacetic acids
Inventor: PALA GIANFRANCO
IPC: C07D295/088
Filed: 1964-04-28
Abstract: The invention comprises compounds of general formula <FORM:1016968/C2/1> where R is hydrogen or C1 to C5 alkyl group and acid addition salts thereof; and the preparation thereof by reacting a piperazine derivative of the formu'a <FORM:1016968/C2/2> with a 1-naphthylacetic acid derivative of the formula <FORM:1016968/C2/3> where X and Y represent groups which are able to react together to form divalent -O-CH2-CH2-radicals, for example (1) reacting an acid halide of an a -substituted or unsubstituted 1-naphthyl acetic acid with N,N1-d -(b -hydroxyethyl)-piperazine; (2) reacting a b -halo ethyl ester of an a -substituted or unsubstituted 1-naphthyl acetic acid with piperazine; (3) transesterifying the esters, preferably the alkyl esters, of a -substituted or unsubstituted 1-naphthyl acetic acids with N,N1-di-(b -hydroxyethyl)-piperazine; and (4) reacting an alkali metal salt of an a -substituted or unsubstituted 1-naphthyl acetic acid with an N,N1-di-(b -haloethyl)piperazine. The compounds of the invention may be mixed with solubility promoters such as metamizole, urea, nicotinamide, nicotinamide ascorbate, piperazine, hexamethylene - tetramine, antipyrene, acetamide, dimethylacetamide, coramine, and compounds containing a -O-CH2-CH(OH-CH2OH group such as 3 - (2 - methoxy - phenoxy) - 1,2 - propanediol and 3-(2-methyl, chloro- and methoxy-4-propionyl - phenoxy) - 1,2 - propanediol.  Acid chlorides of the general formula <FORM:1016968/C2/4> wherein R is H, ethyl, n-propyl or n-butyl, are produced by reacting the corresponding free carboxylic acids and thionyl chloride.ALSO:Pharmaceutical compositions having spasmolytic activity contain as their active ingredient compounds of the formula: <FORM:1016968/A5-A6/1> wherein, R represents hydrogen or straight chain C1 to C5 alkyl, and acid addition salts thereof.  The compositions which may be adapted for oral, rectal or parenteral administration take the form of tablets, dragees, capsules, suppositories, ampoules, suspensions, syrups, solutions, injectable liquids, linctuses, emulsions, drops or suspensions.  Solubility promoters such as metamizole, urea, nicotinamide, nicotinamide ascorbate, piperazine, hexamethylene-tetramine, antipyrene, acetamide, dimethylacetamide coramine and compounds containing a -O-CH2-CH(OH)-CH2OH group such as 3-(2-methoxy-pheroxy)-1, 2-propanediol and 3-(2-methyl, chloro and methoxy-4-propionyl-phenoxy)-1, 2-propanediol may be included.
Patent GB-420315-A (GB)
Title: Improvements in or relating to bathroom scales
IPC: G01G19/46
Filed: 1933-06-20
Abstract: 420,315. Weighing-apparatus. FLORMAN, I., 153, Lafayette Street, New York, U.S.A. June 20,1933, No. 17607. Convention date, April 11. [Class 143] Compound - lever apparatus; spring balances.-A bathroom scale comprises in combination a fixed base 2, lever mechanism 18, 24 mounted on the base, a platform 28 mounted on the lever mechanism, a weighing spring 41 mounted on the base and connected to the lever mechanism, a rack 56 mounted to slide vertically and actuated by the lever mechanism, an horizontal shaft 70, a pinion mounted on the shaft and in engagement with the rack, and an indicating dial including a disc 74 having a flange 76 around its edge mounted on the shaft, the flange being turned in the direction of the pinion and covering and enclosing the pinion and rack and the connection between the rack and the lever mechanism. The rack reciprocates within a tubular guide 48 and is actuated by a knifeedged fork at the end of the lever 24. The dial is enclosed within a casing 78 provided with a reading aperture 80, and the platform is cut away to accommodate the casing. The spring 41 is supported by a screw 40 provided with an adjusting nut 44. A blade-spring presses the rack towards its pinion. Wires 86 loosely connect the platform and the base. The scale is open at the sides thus giving ready access to the lever system for adjustment purposes. Bearings.-The knife-edge pivots of the levers are of square cross-section so that they may be turned when worn to present new edges to their bearing surfaces.
Patent GB-595945-A (GB)
Title: Improvements in the construction of ships
IPC: B63B3/00
Filed: 1945-07-10
Abstract: 595,945. Ship construction. CRISTENSEN, C. F. July 10, 1945, No. 17619. Convention date, Jan. 17, 1942. [Class 113 (ii)] A ship with propelling machinery aft has the hull rigidity progressively increasing in a forward direction. This is achieved either by increasing the depth of the double bottom 2, 3 by the provision of longitudinal bulkheads or by addition of material to the sides and decks.
Patent GB-881897-A (GB)
Title: Improvements in or relating to apparatus for controlling slipping of continuous electrodes
IPC: H05B7/109
Filed: 1958-06-03
Abstract: 881,897. Control of several motors. SHAWINIGAN CHEMICALS Ltd. June 3, 1958 [June 5, 1957], No. 17633/58. Class 38 (3). [Also in Group XI] A furnace electrode 2 is supported partly by pressure contact shoes suspended by a casing 11 from a yoke 12 suspended from a fixed beam 12 and partly by auxiliary clamps 15 in a ring 17 on a secondary yoke 18 supported by screw jacks 25 on the yoke 12. The pressures on the shoes 3 and clamps 15 are such that each group supports the main but not the whole weight of the electrode, which is lowered into the furnace by reversible motor 62 acting through gears 24 on the jacks 25 between limit switches 26, 27. The furnace has several electrodes, e.g. three for a three-phase furnace, and they are lowered virtually simultaneously by a repeat cycle timer 42, the contacts 42c of which close for 20 seconds once an hour. Stop cycle timers 43-45 are then energized for separately adjustable periods, e.g. about 5 seconds and energize solenoid coils 52L-54L of reversing magnetic switches 52-54, thereby energizing motors 62-64 to lower the electrodes by lowering the yokes 18. The return of the yokes to their higher position may be effected by push-buttons 49-51 once a day, or by allowing the yokes to reach lower limit switches 27, 37, 47. The switch 27 energizes a solenoid coil 52L to close a reversing magnetic switch 52 to reverse the motor to raise the yoke 18. Auxiliary contacts 52RC complete a holding circuit maintaining operation of the motor until the yoke 18 reaches the upper limit switch 26. A " Wisdom ribbon " (see Group XI) attached to the electrode may replace the auxiliary clamps 15. Warning devices may denote operation of a limit switch. Although frequent intermittent lowering of the electrodes is preferred, a continuous lowering may be effected by running the motors slowly. The screw jacks may be replaced by hydraulic pistons.
Patent GB-120652-A (GB)
Title: Improvements relating to Fluid Pressure Braking Apparatus.
Inventor: CLOUD JOHN WILLS
IPC: B60T15/54
Filed: 1917-11-30
Abstract: 120,652. Cloud, J. W Nov. 30, 1917. Fluid-pressure. - Relates to means for graduating the release of compressed-air brakes in which the triple valve exhaust is controlled by an additional valve subject to train-pipe pressure and brake cylinder pressure acting in opposition to the pressure in a normally closed cliamber and consists in reducing the pressure in this chamber to a predetermmed valvo prior to the release operation, so that release may not he delayed or prevented. According to one arrangement, the triple valve exhaust port is connected by a passage 17 to a casing 18<1> provided with exhaust ports 19 controlled by an abutment 18 which engages a lever 14 connected also to a slide valve 4, the piston 2 of which is subject on one side to the pressure in the train-pipe connected at G, and on the other side to the pressure in a chamber 7. In the fully released position, the slide valve connects the valve chamber 12 with the chamber 7 through a passage 25 so that air from the trainpipe can feed into this chamber. When the trainpipe pressure is reduced to apply the brakes, the slide valve 4 connects the chamber 7 to a passage, (not shown), leading to a blow-down valve or, according to the Provisional Specification, it may be to another receptacle, so that the pressure in this chamber is reduced to a pre-determined value. A spring 11 may be provided on the trampipe side of the slide valve. In a modification, the triple valve exhaust is connected to the chamber in which the spring 11 is disposed, the lever 14 being dispensed with. The slide valve 4 also is dispensed with, the feed from the train-pipe to the chamber 7 being by way of a port in the wall of the piston chamber 3, and the stem 40 of the piston being formed as a valve for controlling the communication between the chamber 7 and the blow-down valve. A port 29 may be formed in the abutment 18 to ensure the complete release of the brakes.
Patent GB-497493-A (GB)
Title: Improvements in and relating to clack or check valves
IPC: F16K15/04
Filed: 1937-06-25
Abstract: 497,493. Loose - ball check valves. HOLMES & CO., Ltd., W. C., BENTLEY, H., and HENSHAW, D. M. June 25, 1937, No. 17777. [Class 135] A check valve for a sewage disposal plant &c. comprises a body portion 1, having inlet and outlet ports 2, 3 respectively, and provided with a seating 8 for a ball 9 of, for example hard rubber with a metal core, the ball being adapted to be displaced from its seating to a position substantially or mainly out of the flow through the valve, and to be guided during this movement by inclined recesses 12 formed in the sides of said body portion. As shown, one side of the body is provided with a hand hole 6 having a cover 5 in which the recess 12 on this side is partly formed. When the valve is to act as a delivery valve, the functions of the ports 2, 3 are reversed and a hard rubber ball with a wooden core is used.
Patent GB-836710-A (GB)
Title: Gas or vapour-filled cold-cathode discharge vessel
Inventor: RUMPF KARL-HEINZ
IPC: H01J17/00
Filed: 1956-06-08
Abstract: 836,710. Cold cathode discharge tubes. WERK FUR SIGNAL-UND SICHERUNGSTECHNIK VEB. June 8, 1956, No. 17792/56. Class 39(1). A cold cathode discharge tube has at least one grid between an anode and the cathode and the spacing between the grid windings and the distance between the anode and the control grid is smaller, whereas the distance between the cathode and the control grid is greater, than the length of the free path of the electrons under the selected operating conditions, it being possible thereby to both initiate and terminate the gas discharge by altering the voltage on the control grid, with a direct voltage on the anode. The tube shown in Fig. 3 has two girds 5, 9, a cold cathode 4, an anode 6 and an auxiliary starting anode 3. Using neon at a pressure of 3 torr the freepath lengths of the electrons is about 225 microns and the grid openings are less than 200 microns. With two or more grids the spacing between the anode and its adjacent grid is at least twice the spacing between adjacent grids and the spacing between the cathode and its adjacent control grid is at least twice the distance between the anode and its adjacent grid.
Patent GB-129995-A (GB)
Title: Improvements relating to Ratchet Braces.
Inventor: BLUM TAGE EDVARD
IPC: B23B45/12
Filed: 1919-07-16
Abstract: 129,995. Blum, T. E. July 16, 1918. [Convention date]. Ratchet braces.-A double-acting ratchet-brace has two ratchets on the spindle 1 operated on alternate strokes by pawls 17, 11, the first carried directly by the lever 6, and the second by a gear wheel 10 loose on the spindle and in mesh with a gear 7 rotated by a lever 9 from the lever 6. The brace is supported by a flat plate 2 adjustably secured to the drill stand.
Patent GB-1041426-A (GB)
Title: A process of forming a valve on a bag
IPC: B65D30/24
Filed: 1964-04-30
Abstract: 1,041,426. Valve bags. COMPAGNIE INDUSTRIELLE DES TEXTILES ET EMBALLAGES PLASTIQUES C.I.T.E.P. April 30, 1964 [May 9, 1963], No. 17945/64. Heading B8K. After a rectangular sheet 1 of material attached to packaging material 2 (Fig. 2, not shown) has been folded inwards, the sheet and packaging material are infolded about the line 6 and simultaneously the packaging material is folded outwardly about the lines 4, 5, 7, 8 and 13 and inwardly about lines 11, 12 and then sealed at 17 to form the gussetted valved bag shown in Fig. 5. The seam 17 may be welded, sewn or glued or sealed by adhesive tape or thermo-adhesive tape. The extension 1 may be sewn or welded to the packaging material which is preferably polyethylene gussetted tubing. After the bag has been filled the sleeve may be sealed by stapling, sewing, welding or gluing and pushed into the bag.
Patent GB-1012398-A (GB)
Title: Packages with tear means
Inventor: HALEY MICHAEL JOHN HERBERT
IPC: B65D75/08
Filed: 1963-05-07
Abstract: 1,012,398. Tear means for packages. IMPERIAL CHEMICAL INDUSTRIES Ltd. April 21, 1964 [May 7, 1963], No. 17989/63. Heading B8C. A package wrapped in fibre or sheet material is rendered easily openable by forming a slit in the wrapping and applying a pressure-sensitive adhesive tape over it. In the form shown, a piece of tubing of polymeric material, paper or aluminium foil is sealed over the package, which is then placed in an air oven. A strip 5 of the tape folded over at 6 is then pressed over a V-shaped slit 3 cut in the wrapping so that, when the strip 5 is pulled, the fibre or sheet material tears nearly all the way round the package, along dotted lines 8. If the package is wrapped in a sheet, the seam 9 should be located near the end of the path of the strip.
Patent GB-350244-A (GB)
Title: Improvements in ventilating devices
IPC: F24F13/065
Filed: 1930-06-12
Abstract: 350,244. Ventilating nozzles. STEWART, A. W., 150, Helen Street, Govan, Glasgow. June 12, 1930, No. 18009. [Class 137.] An air outlet device comprises a universally adjustable nozzle e one form of which is described in Specification 203,456, [Class 137, Ventilation], and a deflector movable about an axis eccentric to the axis of the nozzle into and out of a position in which it intercepts the stream of air delivered by the nozzle. The nozzle comprises a ball member 2 mounted in a socket 1 and an extension 7 carrying a clamp 6 on which is mounted a pillar 4 and a circular deflector 5. The deflector is covered with felt or the like to reduce the noise of impact of the air and is rotatable about the axis of the pillar 4 or, alternatively, the pillar is rotatable about its seating in the clamp 6. The air delivery is controlled by a spherical segment 9 movable about the axis of a hand-wheel 10. In a modification an extension of the socket 1 serves to cut off the air discharge in a given position of the ball member.
Patent GB-356803-A (GB)
Title: Improvements in alternating current relays
IPC: H01H51/32
Filed: 1930-06-12
Abstract: 356,803. Electromagnetic interrupters and light current relays. STANDARD TELEPHONES & CABLES, Ltd., SANDEMAN, E. K., SKILLMAN, T. S., and AUSTIN, B. B., Columbia House, Aldwych, London. June 12, 1930, No. 18030. [Class 38 (v).] An A.C. relay has a plurality of mechanically coupled tuned reeds which co-operate with one or more loosely-mounted contact devices so that the relay is adapted to be resonant at a plurality of frequencies so as to be operatively responsive to frequencies over a relatively wide range. As shown in Fig. 1, the balanced armature 13 is connected by a link 14 to a tuned reed 15 held between adjustable plates 17, 18. Above the reed 15 in a similar adjustable mounting 19 separated by an insulating sheet 20 is a second reed 16 differing in frequency from the reed 15 and extending between the free ends of the two reeds is a loosely-mounted contact device consisting of a weight 24 with hooked end-pieces 25, 28 which normally rest upon hooked projections 26, 29 secured to the ends of the reeds. Thus when the controlling electromagnet is energized by current of a frequency falling within the combined range of the two reeds the vibration of the loosely-mounted contact device causes an intermittent interruption of the controlled circuit. The Specification describes the electrical equivalent of such a relay as comprising two lined circuits of different frequencies, corresponding to the two tuned reeds with resistances corresponding to any damping effects which may be present in the reeds, the mass and damping effect of the weight 24 corresponding to an additional inductance and resistance in the first tuned circuit corresponding to the reed 15 which is supplied by an E.M.F. corresponding to the mechanical driving force of the armature. A modified form of relay shown in Fig. 5 has the two reeds 34, 35 connected at their free ends by a steel spring 36 and operating a loose-contact device 37, 38. In a further modification, Fig. 6, electrically equivalent to a bandpass filter four reeds 39 .. 42 each operating a loose-contact device 44, are employed, the reeds being driven from the armature through a linkage mechanism 43.
Patent GB-949218-A (GB)
Title: Fluid flow control device
IPC: F15B13/02
Filed: 1960-05-23
Abstract: 949,218. Valves. R. P. R. DE LA POYPE, and C. AUBIN. May 23, 1960 [Oct. 27, 1959], No. 18040/60 Heading F2V. A fluid control valve, which is formed from a central body I and two side plates 2, 3, has two fluid connections 5, 6, which when the former constitutes the inlet, are interconnected by two parallel paths ; one path comprising a passage 7, annular groove 8, a chamber 9, a channel 10 coaxial with the groove 8, a chamber 11 and a passage 12 ; the other path is formed by a port 17 from passage 7, and a recess 11a that is part of chamber 11. Channel 10 extends between chambers 9 and 11. Flow from the groove 8 to chamber 9 is controlled by a diaphragm check valve 13 with an orifice 15 in line with the channel 10, whilst flow from port 17 to recess 11a is controlled by a diaphragm closure 19 having a push member 20, the position of which is adjustable via a screw. When connection 6 is the inlet, fluid can only flow to the outlet connection 5 through chamber 11 and port 17, the check valve being seated by fluid admitted to chamber 9 from chamber 11 through the channel 10 and orifice 15. The groove 8 need not be of annular shape. One such valve may be inserted in each fluid line to a double-acting piston and cylinder.