baber/WOPTO huggingface dataset:
Patent GB-777503-A (GB)
Title: Production of 2,5-dimethylpiperazines
IPC: C07D295/023
Filed: 1955-02-11
Abstract: Cis- or trans-2,5-dimethylpiperazine is heated with a hydrogenation catalyst to between 90 DEG  and 300 DEG C. to form the other isomer. Suitable catalysts are those containing nickel, palladium or platinum or copper chromite.  The time of heating may vary from 10 hours or more to a few minutes, and pressure may be increased to prevent vaporization or dehydrogenation.  The dimethylpiperazine may be prepared by heating isopropanolamine with a nickel catalyst, usually 1-15 per cent, to 90-300 DEG  C. at a pressure sufficient to maintain the liquid phase, advantageously in a hydrogen atmosphere.  Batch or continuous operation may be used.  After removing catalyst, a mixture of the cis-and trans-isomers so recovered by fractionation. Crystallization in the presence or absence of organic solvents yields the trans-isomer which may be recrystallized.  The mother liquor yields a product rich in the cis-isomer which is then heated as described to isomerize it, a mixture being obtained which usually contains 70-90 per cent of trans-isomer.  The isomers may be separated by crystallization and the cis again isomerized or returned to the isopropanolamine reaction.  In examples: (1) to (4) isopropanolamine is heated with Raney nickel at increased or ordinary pressure and cis- and trans-dimethylpiperazine recovered; (5) the cis-isomer is heated with Raney nickel and hydrogen at 200 DEG  C. for 6 hours a pressure of 575 p.s.i.g. developing, the product taken up in ethanol, filtered, distilled to recover the dimethylpiperazine fraction which is crystallized from acetone to give the trans-isomer; (6) isomerization of cis- or trans-dimethylpiperazin-using Raney nickel, copper chromite or pallae dium on charcoal is illustrated.
Patent GB-1413624-A (GB)
Title: Fuel injection
IPC: F23D11/38
Filed: 1973-01-26
Abstract: 1413624 Liquid fuel atomization ACIERIES REUNIES DE BURBACH - EICH - DUDELANGE SA 26 Jan 1973 [28 Jan 1972] 4243/73 Heading F4T  A liquid fuel injector, e.g. for a blast furnace, has a central fuel chamber 330 with a concavely curved inner wall and an outlet 340 at one end, a jet 320 having formed therein channels 321 opening out in directions eccentric to the main axis of chamber 330 and oriented against said inner wall on the downstream side of jet 320 so as to form a sheet of liquid fuel on said wall when said liquid fuel is supplied to said jet, nozzles 331 which debouch into chamber 330 and have axes tangential to said wall and inclined away from jet 320 so that nozzles 331 can supply gas in order to reduce said fuel sheet to a thin film on said wall and to accelerate said thin film on said wall in a substantially helical path therealong, and means 220 for supplying a fuel atomizing pressure gas to the downstream end of said wall obliquely to, and converging upon, the near direction of fuel flow through outlet 340 for atomizing said thin film of fuel. The atomizing gas may be air, oxygen or a fuel gas and is supplied by annular conduit 200 to an annular outlet 220 via ducts 211 which swirl the gas in the same direction as the fuel swirl, the flow through outlet 220 also aiding cooling. The size of outlet 220 may be adjusted by relative aerial movement between walls 100 and 300. Conduit 200 may also supply nozzles 331, or nozzles 331 may be separately supplied with gas having the same or different composition to the atomizing gas. The chamber 321 may have straight or helical axes and circular or U-shaped crosssections. The injector may be used with extra heavy fuel oil preheated to 110 C.
Patent GB-178608-A (GB)
Title: A two-stroke cycle internal combustion engine and a method of working the same
IPC: F02B25/00
Filed: 1921-02-07
Abstract: 178,608. Tuckfield, C. Feb. 7, 1921. Two-stroke-cycle engines; pumps.-In an engine using crank chamber or other compression, a portion of each pump charge is rejected to the atmosphere through air inlet ports A. The remainder of each charge is transferred through a non-return valve E to a passage containing a fuel injection nozzle F the passage terminating in a mechanically - actuated valve leading to a combustion space having curved walls as shown in the Fig. During each upstroke of the piston a portion of the charge is returned to the transfer passage through the valve C.
Patent GB-151205-A (GB)
Title: A device for holding safety razor blades to facilitate honing and stropping
IPC: B24D15/10
Filed: 1920-02-12
Abstract: 151,205. Brown, G. E. Feb. 12, 1920. Stropping - apparatus. -A device for holding a safety-razor blade during honing or stropping comprises two members a, b loosely secured together by means of a screw c and adapted to grip the blade g between their ends c, f, the gripping action being brought about by separating the members at the other end at d. The separation of the members is effected by means of a cone p on a nut o and a cone n on a spindle, m screwed to receive the nut, the cones taking into recesses formed in the members. In order that the blade edge may be presented to the hone or strop at the correct angle, a roller l, located in an aperture k in the members a, b, is mounted loosely on the spindle m, and the members are chamfered at their blade-gripping ends. To accommodate blades with a thick back, recesses i, j are formed in the members a, b.
Patent GB-1101833-A (GB)
Title: Improvements in or relating to machine tools
IPC: B23Q3/155
Filed: 1965-02-15
Abstract: 1,101,833. Tool-changing. GIDDINGS & LEWIS MACHINE TOOL CO. 15 Feb., 1965 [14 Feb., 1964], No. 4361/67. Divided out of 1,101,831. Heading B3B. A machine tool comprises a pair of rings carrying tools and means for selectively rotating the rings to bring a selected tool to a transfer position. The machine is as described in Specification 1,101,831.
Patent GB-607827-A (GB)
Title: Improvements relating to food products having a starch basis
IPC: A23L19/10
Filed: 1946-02-12
Abstract: A food product resembling tapioca is made by passing a paste of starch or a starchy product other than manioc starch, containing approximately 35 per cent of water, between rollers, at least one of which is heated to a temperature of 120 DEG -130 DEG C., the pressure between the rollers being sufficient to brust the starch grains and the duration of contact with the rollers being regulated so as to obtain a dry, friable product.
Patent GB-496785-A (GB)
Title: Improvements in or relating to cathode ray tubes
IPC: H01J29/82
Filed: 1938-02-11
Abstract: 496,785. Cathode-ray tubes. LORENZ AKT.-GES., C. Feb. 11, 1938, No. 4402. Convention date, Feb. 11, 1937. [Class 39 (i)] In a cathode-ray generating system for Braun tubes the electrodes including the cathode are formed of rotation symmetrical bodies spaced by insulating members and held together by bolts. The system, which is supported from the pinch A by rods 2, comprises a cathode 17, and apertured members 5, 9, 11, 12, 15. An insulating ring 4 is fixed to the base plate 3 and is covered by the tubular member 5, which together with a member 6, forms a Wehnelt cylinder. Two insulating rings 8, 10 and the discs 9, 11 are arranged on the member 5 and the tubular member 12 is mounted on the disc 11. An insulating body 14 mounted within the anode cylinder 15 serves to maintain the members in their correct relative position, the arrangement being clamped to the plate 3 by nuts and bolts 7, the latter being attached to the cylinder 15. The cathode 17 is supported in insulating or conducting material 18 which is fixed in the tube 6; the body 18 may be provided with a collar forming a seat for the electrode 17 and the arrangement determines the exact position of the cathode surface.
Patent GB-1218091-A (GB)
Title: Penicillin compositions
IPC: A61K31/43
Filed: 1968-01-29
Abstract: 1,218,091. Stabilization of penicillins. E. R. SQUIBB & SONS Inc. 29 Jan., 1968 [2 Feb., 1967], No. 4500/68. Heading C2A. [Also in Division A5] A penicillin or a pharmaceutically acceptable salt, ester or amide thereof, normally susceptible to degradation by the enzyme #-lactamase, is protected from such degradation by the addition thereto of 6 - aminopenicillanic acid or a pharmaceutically acceptable salt, ester or amide thereof. The proportion of 6-A.P.A. to penicillin is from 1-20 to 200-1, more particularly 1-12À5 to 160-1 and preferably 1-5 to 5-1. A wide range of penicillins are specified. The salts may be (a) metal salts e.g. sodium and aluminium (b) ammonium, (c) amine salts e.g. procaine, N-ethylpiperidine and N,N<SP>1</SP>-dibenzyl. ethylenediamine, (d) salts with acids e.g. hydrochloric, pamoic, methylsulphonic, citraconic, palmitic, theophylline acetic acid and 8- halotheophyllines in the case of amphoteric penicillins.
Patent GB-348646-A (GB)
Title: Improvements in and relating to coil winding machines
IPC: H01F41/06
Filed: 1930-02-11
Abstract: 348,646. Controlling delivery in coilwinding machines. OWEN, C. J. and AUTOMATIC COIL WINDER & ELECTRICAL EQUIPMENT CO., Ltd., Winder House, Douglas Street, London. Feb. 11, 1930, No. 4603. [Class 120 (ii).] Braking mechanism for a hand or power driven coil-winding machine comprises a drum &c. on or connected to the spindle carrying the bobbin, a brake shoe held away from the periphery of the drum by the tension of the wire being wound and a further brake shoe bearing on the opposite side of the periphery of the drum which imparts tension to the wire being wound. Wire m from the supply bobbin b, Fig. 2, passes over a guide-pulley l<3> and over a pulley k<4> on an arm k<3> adjustably clamped by a screw k<5> to a bracket k<1> fixed on a rod k, which is rotatable in the machine frame and to which is secured a lever n carrying a spring n<1> and a rod n<4> connected to a brake shoe f<1> pivoted at a<1>, Fig. 1, and having an adjustment nut n<6>, the shoe f<1> being free from the drum d during winding, the wire tension effect balancing that of the spring n<1>. The wire is tensioned by an upper brake shoe e<1> also pivoted at a<1> and maintained in contact with the drum d by adjustable tension of a spring h<2>, a spring g tending to separate the two brake arms. For winding fine gauge wire, both shoes may be free of the drum d and the wire tensioned by an adjustable, light, curved, blade spring which may be lined, located between the upper shoe and the drum. Movement of the arm k<3> may be limited by a stop. Specification 348,645 is referred to.
Patent GB-609329-A (GB)
Title: Improvements in or relating to apparatus for conditioning solid materials in particle form
IPC: B01F25/70
Filed: 1946-02-14
Abstract: 609,329. Mixing-apparatus. HUNGERFORD RESEARCH CORPORATION. Feb. 14, 1946, Nos. 4626 and 4627. Convention dates, Feb. 15, 1945, and Jan. 19, 1946. [Class 86] A rotary blending drum 10 has a hinged cover 22 for charging and discharging the batch and a pervious cover 24 through which gases may escape from the drum. Liquid to be added to the batch is injected from a reservoir 30, through an orifice 28 in a stationary tube 26 passing through a hollow trunnion 18, under pressure of air or other gas supplied through a tube 32. In order to avoid appreciable wetting of the wall of the drum 10, and consequent agglomeration of the mix, the jet through the orifice 28 is directed angularly toward the rising side of the rotating drum, and the liquid is introduced intermittently at rate proportional to the speed of rotation of the drum through a valve 36 controlled by a cam 44. Air or other gas is supplied to the tube 32 by a pump through a conduit 46, a drier 48, and valve connections are provided whereby the air may also pass through a heating chamber 56. Liquid is forced from the chamber 30 through a discharge pipe 34, Fig. 3, leading to a tube 38 inside the tube 26 having an orifice 40 at its inner end. The tube 26 is also connected to the tube 32 through a valve 43 so that liquid mixed with controlled amounts of air or gas is discharged as a jet or spray through the orifice 28. Treating liquids which are solid at normal temperatures may be liquefied in the vessel 30 by heat from a burner 31 and maintained hot by a heating coil 37. For removing volatile constituents from the materials after or during mixing air or other gas may be supplied to the chamber 10 through the trunnion 16 via a tube 60 which may be connected through valves to the drier 48 and/or the heater 56. The tube 60 passes through a jacket 67 for a cooling fluid whereby the temperature within the chamber 10 may be controlled. Specification 609,328 is referred to.
Patent GB-927655-A (GB)
Title: Improvements in or relating to belt-fastening machines
Inventor: POTTER JOHN JAMES
IPC: F16G3/00
Filed: 1961-02-08
Abstract: 927,655. Belt gearing. HAYDEN-NILOS Ltd. Feb. 8, 1962 [Feb. 8, 1961], No. 4627/61. Class 80 (1). In a belt-fastening machine for the insertion of hooks 9, connected in a row by a wire 18 welded to them, into a belt 8, stepped jaw cheeks 5, 6 form pressing lands 20, 21, 22 which progressively close the hooks 9 as the jaw unit is traversed with respect to the assembly of hooks 9. The jaw cheek 5 is fixed on a lever 1 and jaw cheek 6 is adjustably mounted on a lever 2, the levers 2, 3 being pivotally connected at 3 and operated by toggle mechanism at 4. The lands 20, 21, 22 have serrated surfaces 23.
Patent GB-1176482-A (GB)
Title: Magnetic Disk
Inventor: TONEY DEREK JOHN
IPC: G11B5/702
Filed: 1966-09-07
Abstract: 1,176,482. Magnetic disc. ZONAL FILM (MAGNETIC COATINGS) Ltd. 1 Sept., 1967 [7 Sept., 1966], No. 4639/69. Divided out of 1,176,481. Heading H1H. A magnetic disc 1, which is adapted to be carried by the support turntable described in Specification 1,176,481, has a cut out centre portion 6 and is either a film of thin base material which has coated on one side only a magnetic coating or is a thin film of magnetic material, the disc has a reinforced peripheral ring 4 which extends outwards and is adapted to fit into an annular groove 16 on the magnetic turntable. The base may be polyethylene terephthalate which may be coated with a layer of polymeric binder containing dispersed magnetic oxide particles. The polymeric binder may be a polyurethane based polymer. The polyethylene terephthalate may have an adherent film of a magnetic metal, e.g. Ni/Co alloy or Co, as the magnetic coating. The film of magnetic material may be of plastics material, e.g. polycarbonate containing finely comminuted magnetic oxide particles.
Patent GB-311681-A (GB)
Title: Improvements in and relating to vapour electric rectifiers
IPC: H02M7/06
Filed: 1928-02-14
Abstract: 311,681. British Thomson-Houston Co., Ltd., and Whitaker, F. P. Feb. 14, 1928. Vapour apparatus, arrangements of. - In means for regulating the D.C. voltage of metallic vapour rectifiers by varying the effective inductance of an interphase transformer or reactance coil in the anode circuits, the inductance is varied by mechanical means operated either manually or automatically and adapted to vary the dimensions of an air gap in the magnetic circuit, or to vary the inductive relationship between the winding and a short-circuited coil on a movable part of the core, or to change the relative positions of series-connected parts of the winding arranged on a rotor and stator respectively. Fig. 1 shows the first-mentioned form in which a winding 4 connected between the star points of the threephase secondaries 1 feeding the anode circuits is arranged on a core 12 having a movable part 13 pivoted at 14 so as to enable a variable air gap to be introduced into the magnetic circuit.
Patent GB-576211-A (GB)
Title: Improvements in unions for pipes or tanks
IPC: F16L37/16
Filed: 1940-03-14
Abstract: 576,211. Pipe joints. SOC. ANON. LE BOZEC & GAUTIER. March 14, 1940, No. 4820. Convention date, March 15, 1939. [Class 99 (i)] In a bayonet jont the socket comprises a main body 13, 14, a sleeve 17, 18 rotatable thereon, and a second sleeve 32 keyed to but axially movable in relation to the first sleeve and carrying the pins 37 or bayonet slots of the-connection to the spigot 36, the sleeves being connected by a toggle lever which is operated to draw the spigot on to a gasket 15 after the bayonet connection has been made.
Patent GB-828933-A (GB)
Title: 9-aminodecahydronaphthalene derivatives
Inventor: FARRINGTON JOHN ALAN
Filed: 1957-02-13
Abstract: The invention comprises compounds of the general formula <FORM:0828933/IV (b)/1> and their acid addition salts, wherein R1 represents an alkyl, alkenyl or aralkyl radical and R2 a hydrogen atom or an alkyl radical, and the preparation thereof by alkylation, alkenylation or aralkylation of 9-aminodecahydronaphthalene; the preparation of compounds of the general formula <FORM:0828933/IV (b)/2> wherein R represents a hydrogen atom or an alkyl radical containing one carbon atom less than R1, when R1 represents an alkyl radical, by reduction of a compound of the general formula <FORM:0828933/IV (b)/3> the preparation of compounds of the general formula <FORM:0828933/IV (b)/4> wherein R3 represents an alkyl, aryl or aralkyl radical containing one carbon less in the carbon chain than the radical R1 when R1 represents an alkyl or an aralkyl radical, by condensation of 9 - aminodecahydronaphthalene with an aldehyde R3CHO and reduction of the condensate so formed; the preparation of compounds of the general formula <FORM:0828933/IV (b)/5> wherein R11 represents a hydrogen atom, an alkyl or alkenyl radical by methylation of 9-R11-aminodecahydronaphthalene with formaldehyde and formic acid; and the preparation of 9 - dimethylaminodecahydronaphthalene by methylation of 9-aminodecahydronaphthalene with formaldehyde and formic acid.
Patent GB-661218-A (GB)
Title: Improvements in submarine craft
IPC: F42B19/14
Filed: 1949-02-23
Abstract: 661,218. Gas turbine plant. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Feb. 23, 1949. [Feb. 26, 1948] No. 4952/49. Drawings to Specification. Class 110(iii). [Also in Groups XXI and XXVII] In a closed circuit gas turbine for use in a submarine craft, the working medium is heated by a fuel the combustion gases of which lose their gaseous state by direct or indirect interaction with the water surrounding the craft. The fuel may be oxy-hydrogen, the product of combustion of which are condensed in a surface condenser and either pumped overboard or stored in fresh water tanks. Other fuels may be sulphur and potassium chlorate, or sodium and water, the combustion products of which react chemically with the water surrounding the craft. The craft may have means for producing the oxy-hydrogen gas. The working medium may also be heated by a hydro-carbon fuel when the craft is on the surface.
Patent GB-1117340-A (GB)
Title: A ringer device
IPC: H04M19/04
Filed: 1967-02-02
Abstract: 1,117,340. Substation circuits. SOCIETA ITALIANA TELECOMUNICAZIONI SIEMENS S.p.A. 2 Feb., 1967 [13 April, 1966], No. 5114/67. Addition to 1,059,606. Heading H4K. In the circuit of the parent Specification which includes an adjustable transistor oscillator controlled by rectified ringing current, a Zener diode is inserted in the input circuit to eliminate actuation by low-voltage line noise.
Patent GB-309946-A (GB)
Title: Distillation of tar at a gas retort plant
IPC: C10C1/16
Filed: 1929-02-16
Abstract: 309,946. Barrett Co., (Assignees of Miller, S. P.). April 18, 1928, [Convention date]. Ascension pipes; condensing and scrubbing processes. - Coal distillation plant comprises retorts 6 having multiple standpipes 8 each connected to a number of retorts and leading to a foul gas main 16. A section 25 of the main can be disconnected by a valve 31 so that the system can be operated in two independent parts. In one method of working nozzles 10, 12 in the standpipes connected to the main 25 are supplied with tar through a pipe 11, the gases being scrubbed and the tar distilled, the residue collecting in receptacles 13 and oils being condensed from the gases. Similar nozzles in the standpipes connected to the main 16 are supplied with ammonia liquor through a pipe 18, tar being condensed and collecting with excess liquor in the receptacles 13. A pipe 19 conveys the tar and liquor to a separator whence they may be recirculated to the nozzles. Pitch is drawn off into a separate receptacle and may be further distilled. The mains 25, 16 may have separate condensing systems. The relatively clean oils from the first system and the light tar or tarry oils from the second may also be supplied to the standpipes and subjected to distillation. Tar from other sources such as coke oven tar may be distilled in admixture with the retort gas tar to produce different pitches and creosote oils. A pitch containing 12-15 per cent of " free " carbon with a melting point of 105-110‹ F. may for example be produced for road treating purposes. In another method of working tar is supplied to all the standpipes and the valve 31 may be open, or if it is closed two different pitches may be obtained simultaneously. Or ammonia liquor may be supplied to all the standpipes. To ensure the distillation of tar at high temperature the standpipes are heavily insulated so that the gases, for example, may leave the standpipes enriched in oil vapours at temperatures in excess of 150-200‹ C., or 250-275‹ C. or higher. Means may be provided to prevent condensate in the foul main from returning to the standpipes. The hot enriched gases may be cleaned in an electrical precipitator or a hot pitch scrubber so as to free them from heavy tar and pitch constituents at a temperature high enough to leave a large part of the oils in vapour form, clean oils being obtained on subsequent cooling. Specifications 282,367, 282,826 and 285,907 are referred to.
Patent GB-1369873-A (GB)
Title: Taps
IPC: F16K5/04
Filed: 1972-01-14
Abstract: 1369873 Valves BRITISH LEYLAND (AUSTIN-MORRIS) Ltd 14 Jan 1972 [25 Feb 1971] 5384/71 Heading F2V A tap for controlling the flow of engine coolant into a heating system of a vehicle has a rotary plug 3 provided with a pair of projections 8 on its base which co-operate with four recesses 9 in the base of the body 2 to inhibit rotation from the open and closed positions. Both the plug and body are injection moulded from glassfilled nylon. A bowed circlip 7 urges the plug towards the base of the body.
Patent GB-287548-A (GB)
Title: Improvements relating to record-card-controlled statistical and calculating machines
Filed: 1928-02-21
Abstract: 287,548. Tauschek, G. March 24, 1927, [Convention date]. Statistical apparatus.-A record-card-controlled statistical machine is adapted for addition and subtraction of items in various fields of the same card. A card 1 divided into a number of fields, seven in the present instance, coacts with reading feelers 3 on a bar 2 which is moved in the direction of the double arrow. The seven sets of feelers 3 are wired to seven sets of contacts 10 arranged on a drum 15 the axis of which carries a set of spring contact blades 9 coacting with contacts 10. Each time the bar 2 reaches an end of its path, having read a card, it closes contacts 4, or 5, and energizes a magnet 6 so that ratchet and pawl mechanism 7 moves the axis 8 on one step whereby the contacts 9 move to coact with the next set of contacts 10. The contacts 9 are wired to the counter magnets so that the amounts from the seven fields are accumulated on the same counters. When the axis 8 has completed its action for the seventh card, field contacts 11, 12 close to eject the card and introduce a new one in known manner. The ratchet 7 winds up a spring 13. This ratchet is released so that spring 13 returns shaft 8 to its original position either by mechanical means or electromagnetically when contacts 11, 12 close. Instead of being returned backwards, the shaft 8 may be moved on an extra step to reach its initial position. Preferably the card is of the kind in which each number in a column is represented by a number of holes equal to the number of the digit.