baber/WOPTO huggingface dataset:
Patent GB-1268652-A (GB)
Title: Production of aromatic primary polyamines
IPC: C08G2/00
Filed: 1969-08-08
Abstract: 1,268,652. Preparation of aromatic primary amines. BADISCHE ANILIN- & SODAFABRIK A.G 8 Aug., 1969 [10 Aug., 1968], No. 39707/69. Heading C2C. The invention relates to a process for the production of aromatic primary polyamines by reaction of an aromatic primary amine and a carbonyl compound in the presence of an acid catalyst with or without an organic solvent, neutralization of the reaction mixture and separation of the polyamines from the two-phase mixture thus formed wherein the reaction and/or the isolation procedure is carried out with an addition of an alkylbenzene in an amount of from 30 to 250 parts of alkylbenzene for 100 parts of aromatic primary amine. The alkyl benzene may be added to the reaction mixture before, during or after neutronization. In an example, aniline is reacted in the presence of hydrochloric acid with aqueous formaldehyde solution and after heating the mixture toluene is added. Subsequently an organic layer and an aqueous layer are separated and from the former there is obtained aromatic primary polyamine, consisting of about 50% diamine and 50% by weight of tri- and tetra-amine. There is also disclosed the reaction of chlorobenzene saturated with phosgene with a mixture of polyamine and chlorobenzene to produce a mixture of isomers of polymethylene polyphenyl isocyanates.
Patent GB-1493156-A (GB)
Title: Agricultural cultivator
IPC: A01B39/24
Filed: 1975-09-29
Abstract: 1493156 Agricultural cultivators INTERNATIONAL HARVESTER CO 29 Sept 1975 [6 Jan 1975] 39773/75 Heading A1B Cultivator gangs 14 are mounted by means of pivoted parallel links 36, 38 on head brackets 30 clamped to a transverse bar 12 hitched at 20 to a tractor, each cultivator gang 14 comprising a pair of parallel plates 42, 44 provided with horizontal flanges 48 to which are adjustably clamped beams 50 each projecting sideways from the plates 42, 44 and tools carrying a single spring 16, and a gauge wheel 63 carried by a support bar 66 extending through and adjustably clamped at 76 to the plate 44. Each of the pivots of the parallel links 36, 38 comprises a bush 56 surrounding a bolt 52 and received in a bore in the respective link end, and a grease point 62 is provided. The beams 50 of the three middle gangs 14 project alternately right and left of the plates 42, 44, and their spring tools 16 are in V-formation. Downward movement of each cultivator gang 14 is limited by a bolt 94. The rearmost central beam 50 of each gang 14 may be replaced by one or two beams projecting to one side and/or the other.
Patent GB-990432-A (GB)
Title: Hydraulic apparatus
Inventor: BOYDELL KENNETH RAYMOND
IPC: F16H39/00
Filed: 1962-10-22
Abstract: 990,432. Hydraulic transmission. DOWTY HYDRAULIC UNITS Ltd. Jan. 17, 1964 [Oct. 22, 1962], No. 39909/62. Heading F2C. In an hydraulic transmission comprising a variable displacement pump 1 and motor 2, interconnected by passages 3, 4, in which a low pressure make-up pump 7, driven with pump I, draws liquid from a reservoir 6 and delivers it through a passage 8 connected via a pair of non-return valves 9, 11 to the passages 3, 4, a spring-loaded relief valve 13, or restrictor, in the delivery passage 8, by-passes liquid to a heat-exchanger 15, or filter, which cools and returns the liquid via a duct 16 to the reservoir 6, a second relief valve, of a slightly higher loading than the valve 12, also in the passage 8 controlling the maximum pressure in the passage 8 and by-passing surplus liquid direct to the reservoir, leakage from the pump 1 and motor 2 being collected and fed by a pipe 5 to the reservoir. The spring loading of the valve 13 may be adjusted by a device responsive to temperature within the hydraulic transmission such that an increase in temperature therein reduces the valve spring loading to permit increase in flow through the heat exchanger 15 which latter comprises one or more thin-walled finned pipes arranged in a stream of cooling air directed from a fan 17 driven from the same source as the pumps 1 and 7.
Patent GB-1525258-A (GB)
Title: Remote operated pipe connection
IPC: E21B17/08
Filed: 1975-09-30
Abstract: 1525258 Wells &c MC EVOY OIL FIELD EQUIPMENT CO 30 Sept 1975 39911/75 Heading E1F [Also in Division F2] First and second tubular connectors 20, 22 which are welded to pipes 12, 14 forming part of an undersea string, are provided with cooperating groups of circumferentially spaced no-lead threads which may be interengaged to hold the connectors 20, 22 together, the connector 20 having stop lugs 32 formed thereon as a castellated end thereof, and static rotation of the connectors during engagement being limited by a stop 46 on the connector 22, an axially movable latch 50 also being provided on the connector 22 engageable with a lug 32 to prevent disengagement of the connectors, the latch 50 (Figure 4) being normally held engaged by a shear pin 86 but being releasable to allow disengagement of the connectors 20, 22 by means of a release tool having an actuating ring 54, the tool being dropped down inside the pipes either freely or on a wire, and the ring 54 striking a radially extending bar 74 engaging a bevelled surface on the latch 50 so as to shear the pin 86 and move the latch 50 downwardly in Figure 4 allowing relative rotation and release of the connectors 20, 22. Flattening of a plug 78 of soft material against a shoulder 44 within the connector 20 will indicate whether the ring 54 has released the latch 50 on retrieval. As an alternative to the movable latch 50, the latch may be formed so as to have a part thereof break off under the action of the bar 74 to release the connectors for disengagement, this part being formed as the end of an elongate member or as a chordal part of a disc.
Patent GB-883977-A (GB)
Title: A machine or device with a movable slide and optical equipment for indicating the position of the slide
IPC: G01B11/00
Filed: 1959-11-25
Abstract: 883,977. Machine-tool details. HENSOLDT & SOHNE OPTISCHE WERKE A.G., M. Nov. 25, 1959 [Nov. 28, 1958], No. 39940/59. Class 83 (3). [Also in Groups XIX and XX] The position of a slide 2, Fig. 1a, movable along a bed 8 is indicated by an optical system which projects a portion of a scale 9 on the bed on to a screen 11 carried by the slide, one of the optical elements being connected to a level indicator, e.g. a spirit level 29, and adjustable to correct for tilting of the slide on the bed. The slide may be in a machine tool or, as shown, in an instrument for measuring the length of a workpiece 5. The system includes lens 10, 12 and mirrors 14, 13, 15, 16, 17 and illumination is from a source 18. A glass 22 carries a fine scale 221, Fig. 16, and is movable against a spring to position a mark of scale 22<SP>1</SP> between the image of scale 9 which is shown as two lines 230 by rotating the screen 11 which carries an eccentric ring 23. Adjustment of ring 23 is indicated on a scale 24<SP>1</SP> read against a mark 11<SP>11</SP> to provide a fine reading. Mirror 13 is secured to a body 26 movable about pivot A-A by a spring 28 and screw 27 which is adjusted to level the body 26 before the scale is read. The workpiece 5 is supported between a fixed centre 3 and a spring-loaded centre 4 in the slide. In another arrangement, a lens 41, Fig. 3a, carried by body 45 is movable relatively to a fixed lens 40. In another modification, the scale point Mo, Fig. 4, is projected via lens 10 and prism 50 to a telescope 50a carrying a level indicator 55 and adjustable about axis A-A by a screw 53. In yet another modification, a prism 60, Fig. 5b, reflects the scale image to a mirror 63 and lens 10, 12, &c., and is pivoted on pendulum arms 61, 62 adjustable to set a level indicator 65 on arm 62 by a screw 64.
Patent GB-896191-A (GB)
Title: Method and apparatus for sorting sheet materials such as banknotes
Inventor: WILLIAMS HAROLD MALCOLM GORDON
IPC: G07D7/00
Filed: 1957-12-23
Abstract: 896,191. Pneumatic separating. PORTALS Ltd., and TOOTH, A. J. March 23, 1959 [Dec. 23, 1957], No. 39975/57. Class 117. In order to separate soiled banknotes and similar sheets which have become progressively soiled and more porous during their use, from a mixture of clean and soiled sheets, the porosity of each sheet is tested and separation effected according to porosity. In Figs. 2 and 3 a suction transfer device 21 carries each sheet from a stack 20 to a gripper bar 22 attached to a hollow drum 23 revolving clockwise. The drum has a porous insert 24 in its periphery, and its shaft 25, 26 are hollow. A vacuum pump is connected to the shaft 25 and a flexible bellows 30 is connected to the drum interior via a tube and shaft 26. Depending on the porosity of the sheet placed over the porous insert the bellows may operate a switch 32 actuating an alarm bell so that that sheet may be manually removed. The other sheets are collected by a roller and conveyer assembly 43 and delivered to a stack 44. Alternatively the switch 32 alters the setting of the assembly 43 so that either the soiled or new sheets are delivered to a separate stack. Instead of an electric switch 32 a pneumatic valve may be used and the soiled sheets rejected by pneumatic controls.
Patent GB-1514024-A (GB)
Title: Circular magnetic domain devices
IPC: G11C19/08
Filed: 1975-04-15
Abstract: 1514024 Magnetic bubble devices PLESSEY CO Ltd 15 April 1975 [17 May 1974] 40101/76 Heading H3B In a magnetic bubble device having a bubblesupporting layer I subject to a bias field produced by magnets 6 and an in-plane rotating field produced by two orthogonal pairs of coils (not shown) of which one pair generates a unipolar field stopping and starting at zero, an additional pair of magnets 8 produces a further bias field in the opposite direction to the unipolar field so as to stabilize domains under a propagating overlay when the rotating field is stopped and started.
Patent GB-846825-A (GB)
Title: Improvements in or relating to change-speed gear transmissions
IPC: F16H3/32
Filed: 1958-12-12
Abstract: 846,825. Change-speed gear. INTERNATIONAL HARVESTER CO. Dec. 12, 1958 [July 14, 1958], No. 40144/58. Class 80 (2). A change-speed gear comprises two shafts Z, D geared to rotate in the same direction, the shafts being parallel to but at unequal distances from a third shaft X having axially displaceable gears 23, 31, 43 meshable with gears 42, 34, 22 or 53, 45, 33<SP>1</SP> on the shafts Z and D to provide a plurality of ratios. An input shaft C drives a free cluster 24, 32, the gear 32 driving a gear 39 of a free cluster 39, 35 on shaft D, gears 24 or 35 being engaged by a sliding gear 41 to drive the shaft X in forward or reverse direction. The shafts Z and D are geared together by an idler A or a chain-drive and shaft D serves as an output-shaft. A shift lever 52 pivots about axes a-a and b-b to select and engage selector forks 43b, 31b and 23b for ratio changes, and a second lever 54a pivots about c-c to engage forward and reverse fork 41a. The C, D, X, Z and A may interchange as input and output shafts.
Patent GB-984378-A (GB)
Title: Improvements in or relating to sodium hypochlorite production
Inventor: COULTER MICHAEL OLIVER
IPC: C01B11/06
Filed: 1962-10-24
Abstract: <PICT:0984378/C1/1> High strength sodium hypochlorite liquor containing more than 10% by weight of chlorine, a sodium chlorate concentration of less than 0.1% by weight and a free caustic content of not less than 0.1%, and preferably between 0.2 and 0.8%, by weight is continuously produced by the continuous absorption in an aqueous caustic soda solution of gaseous chlorine at the rate of between 0.01 and 0.5, and preferably between 0.05 and 0.2 pounds of chlorine per cubic foot of solution per minute at a temperature above 22 DEG  C. and preferably between 25 DEG  and 30 DEG  C.  The chlorine is supplied as a gaseous mixture containing between 25% and 99.9% by volume of molecular chlorine with inert diluent gas or gases, suitable mixtures being an air and chlorine mixture with molecular chlorine content between 50% and 75% by volume, compressed cell gas with molecular chlorine content of about 97% by volume resulting from the electrolysis of brine, and the uncondensed residue from the condensation of chlorine gas produced in electrolytic cells.  In Fig. 3, a reactor 1 is fed with chlorine gas mixture through line 2 and sparge assembly 3 and with caustic liquor through line 4.  An emergency overflow line 5 connects the reactor with an empty vessel 6.  Residual inert gases are vented through line 7.  A detector 8 automatically records the redex potential of the mixture and controls the feed rate of either chlorine or caustic liquor by operation of either valve 9 or valve 10, the feed rate of the other component being controlled manually.  Hypochlorite liquor is removed through line 11, passed to a cooler 12 and recirculated to the reactor for cooling purposes after a minor portion has been bled off via line 13 to storage, the rate of withdrawal being controlled automatically to maintain a constant level in vessel 1.
Patent GB-1119451-A (GB)
Title: Improvements in or relating to pressure responsive devices
Inventor: HIORNS ARTHUR WELLESBOURNE
IPC: G01L9/00
Filed: 1963-10-14
Abstract: 1,119,451. Measuring fluid pressure. MINISTER OF TECHNOLOGY. Jan. 8,1965 [Oct. 14, 1963], No.40382/63. Headings G1L and G1N. A Bourdon type pressure transducer comprises a Bourdon tube 11 coiled around a spindle unit 13 to which the cloud flattened inner end of the coil is firmly attached so that the spindle and tube end can turn as one unit, a casing 18 to which the outer end of the tube is rigidly fixed, bearings 15 in the casing for the spindle, means for mounting a stationary part of an electric pick-off in the casing, and further means for mounting a co-operating and relatively angularly moving part 28 of the pick-off on the spindle for movement as one therewith, there being provision for adjusting the relative position of said mounting means angularly around the spindle axis and for adjusting each of said mounting means along a radius through the spindle centre. The spindle 13 carries an adjustable mounting assembly for the moving contact 28. The moving contact is adjusted angularly by clamping screw 25 to adjust the zero setting and radially by clamping screw 27 to adjust the arc length moved by the end of the moving contact. An electrically resistive track 48 (the stationary part) is mounted on the upper face of a block 47, the block 47 being secured to a carrier plate 40 which is adjustably secured to the mounting plate 16. Any change in the relative pressure between the inside of the tube and the outside results in rotation of the spindle 13 and so movement of the moving contact 28. The pick-off employed is of a resistive potentiometer type comprising a resistance element and associated wiper contact.
Patent GB-1191137-A (GB)
Title: Method of producing Metal Laminate Composites
Inventor: KENNEDY GEORGE ERNEST
IPC: B23K20/227
Filed: 1967-09-05
Abstract: 1,191,137. Making steel laminates; jointing by rolling; welding by pressure and fusion. UNITED STATES STEEL CORP. 5 Sept., 1967 [16 Sept., 1966], No. 40595/67. Headings B3A, B3M and B3R. In a method of making roll-bonded composites of steel laminations, wherein the bonding surfaces are cleaned, the laminations assembled into a sandwich-like assembly, the interfaces evacuated and the assembly hot roll-bonded, the assembly is diffusion bonded at 2000- 2400‹ F. for at least about 45 minutes. The bonding surfaces of the laminations are prepared by grinding and the assembled packs evacuated to a pressure usually less than 150 microns and preferably less than 50 microns. The packs are peripherally welded by such methods as interrupted-arc metal-inert gas technique using a low carbon steel filler, or by using the covered-electrode technique.
Patent GB-1223479-A (GB)
Title: Process of manufacturing nitrilotriacetonitrile
Inventor: DAVIS K E
IPC: C07C255/25
Filed: 1968-08-27
Abstract: 1,223,479. Production of nitrilotriacetonitrile. STAUFFER CHEMICAL CO. 27 Aug., 1968, No. 40833/68. Heading C2C. Nitrilotriacetonitrile is obtained by (a) continuously contacting approximately stoichiometric aqueous proportions of ammonia, formaldehyde and hydrogen cyanide (or the equivalent proportions of hexamethylenetetramine, formaldehyde and hydrogen cyanide) in the liquid state in aqueous solution in the presence of a mineral acid, in a reaction means at a temperature of at least 120 C., at a pH not higher than 5 and under sufficient pressure to maintain the mixture in a substantially liquid state to form nitrilotriacetonitrile, and (b) continuously conveying the substantially liquid nitrilotriacetonitrile product formed to a quenching means to reduce the temperature of said nitrilotriacetonitrile product to at least below 90 C., which precipitates the product. The reaction is suitably conducted under autogenous pressure using sulphuric acid as the mineral acid. The residence time of the reactants within the reaction means is suitably 1-30 minutes. The reaction means may be of a tubular plug-flow or spiral design, a suitable form of apparatus being described.
Patent GB-1433716-A (GB)
Title: Alkaline bright zinc electro plating
IPC: C25D3/22
Filed: 1974-09-19
Abstract: 1433716 Electro-plating zinc RICHARDSON CHEMICAL CO 19 Sept 1974 [24 Sept 1973] 40837/74 Heading C7B An aqueous alkaline, CN-free Zn electro-plating bath contains a quaternized condensate of an alkylene polyamine containing at least one tertiary amino group with an epihalohydrin, the mol ratio of amine to halohydrin being 0.5-1.75:1, together with a zinc brightener and a 2-mercapto-pyridine or -pyrimidine. The polyamine may be N,N-dimethyl (or ethyl) ethylene (or propylene) diamine, with or without an N'-methyl or -ethyl substituent, N-aminopropylmorpholine, N-aminopropyldiethanolamine or N-methyliminobispropylamine. The halohydrin may be epichlor- or -bromo hydrin. Conventional quaternizing agents are used e.g. methyl chloride or dimethyl sulphate. The brightener may be one or more aldehydes e.g. a hydroxy benzaldehyde, piperonal, vanillin, veratraldehyde, #-methoxy propionaldehyde, furfural, glyceraldehyde, anisaldehyde or thiophene- 2-aldehyde, which may be adducted with NaHSO 3 . The mercapto compound may be 2-mercaptopyrimidine, 2-thiouracil, 2-mercapto-4-amino- 6-hydroxypyrimidine, dithiouracil, 2-mercapto- 3-hydroxypyridine, 2-mercapto-5-carboxypyridine or 2-mercapto-4,6-dihydroxypyrimidine, others being listed. Other usual additives e.g. PVA may be present. An alkali metal hydroxide or carbonate may maintain the pH, using as Zn source the sulphate, acetate or oxide. Current densities up to 200 ASF at 60-100F are possible.
Patent GB-1187536-A (GB)
Title: Processor for Helium Speech
Inventor: ROWORTH DONALD ANTHONY ACOTT
IPC: G10L21/00
Filed: 1968-08-28
Abstract: 1,187,536. Vocoder helium speech processor. STANDARD TELEPHONES & CABLES Ltd. 28 Aug., 1968, No. 41143/68. Heading H4R. A processor for helium speech, e.g. from divers, comprises a vocoder with analysis channels arranged over one frequency range e.g. 0 to 6 kHz. and synthesis channels arranged to reproduce the speech in a compressed frequency range, e.g. 0 to 3 kHz., in which individual excitation signals are derived for a number of channels or groups of channels in order to improve the intelligibility. Fig. 3 is a block diagram of one channel of the processor and includes an analysis filter 13, amplifier 14, and envelope detector 15, the output from which is low pass filtered in 16 to serve as the spectrum function control signal for a synthesis modulator 17, and also fed to a threshold detector 19, and band-pass filter 20, to pick out the excitation frequency, which is infinitely clipped by clipper 21, the peaks detected by 22 and the negative-going edges used to trigger the excitation pulse generator 23, the output from which is applied to synthesizer modulator 17. The negative-going edges of the clipped signal are used to trigger the pulse generator rather than the positive to provide a small delay to compensate the delay in the spectrum analysis channel, and the energy level of the pulses is arranged to be maintained constant regardless of frequency by varying the pulse amplitude. As described each channel may use an excitation signal derived in the channel, as in Fig. 3, or the six highest frequency channels may be provided with individual excitation signals while the remaining channels use a common excitation signal derived from the lowest frequency channel. Circuits are described for the analysis channels, Figs. 4 and 5 (not shown).
Patent GB-1254353-A (GB)
Title: Process for preparing aromatic isothiocyanates
IPC: C07C331/28
Filed: 1969-08-19
Abstract: 1,254,353. Preparation of aromatic isothiocyanates. OLIN CORP. 19 Aug., 1969 [29 Oct., 1968], No. 41384/69. Heading C2C. A process for preparing aromatic isothiocyanates comprises reacting (a) carbonyl sulphide, (b) an aromatic nitrogen-containing compound selected from aromatic nitro compounds, aromatic nitroso compounds, aromatic azo compounds, an aromatic azoxy compound, and mixtures thereof (in which compounds the nitrogen-containing group is attached directly to an aromatic nucleus) in the presence of potassium fluoride and recovering the aromatic isothiocyanate produced thereby. Using this process phenyl isothiocyanate and m- and ptolylisothiocyanates are prepared in the examples.
Patent GB-1335285-A (GB)
Title: Method for reactivating deactivated catalysts containing pla tinum and lead
IPC: B01J23/96
Filed: 1971-09-06
Abstract: 1335285 Catalyst regeneration ASAHI KASEI KOGYO KK 6 Sept 1971 [7 Sept 1970 28 Oct 1970 22 April 1971] 41458/71 Heading B1E A deactivated hydrocarbon conversion catalyst containing platinum and lead is reactivated by passing over the catalyst a gas containing 0.5 to 5% volume of oxygen for 2 to 5 hours at 300-450‹C. This is suitably followed passing a gas containing more than 5% oxygen over the catalyst for 1 to 3 hours at 450 to 550‹C. The oxygen treatment may be preceded or followed by a treatment with a halogen or halogen-compound containing gas. The catalyst may comprise a third component, these specified being Li, Na, K, Rb, Cs Cu, Ag, Au, Be, Mg, Ca, Sr. Ba, Zn, Cd, Hg, Y, B, Tl, Ti, Zr, Ge, Sn, V, Ta, P, Sb, Bi, Cr, Mo, W, Mn, Re, Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, Th or U. In the Examples the catalysts treated comprise Pt, Pd alone or Pt, Pd and U, K or Cd on a gamma-alumina carrier.
Patent GB-936311-A (GB)
Title: Trimming or sealing strip structures
IPC: F16B5/06
Filed: 1960-12-02
Abstract: 936,311. Trimming or sealing strips. STANDARD PRODUCTS CO. Dec. 2, 1960 [May 9, 1960], No. 41488/60. Class 20 (4). [Also in Group XXV] A flexible trimming, sealing, &c., strip includes a channel-shaped sheet metal core 1 having transversely disposed longitudinally spaced slots 5 extending through the free edges of the channel thereby defining longitudinally spaced side-wall strap portions 7, the free end portions of at least some of the strap portions being bent inwardly to provide gripping projections 10 for the attachment of the strip to a structure embraced thereby. At least some of the free end portions of the strap portions 7 may be of generally pointed form. The slots 5 may extend from within the base 2 of the channel and the inner ends of the slots may be of generally V-shape.
Patent GB-1427214-A (GB)
Title: Electromagnetically operated hydraulic valve
IPC: F16K31/06
Filed: 1973-09-04
Abstract: 1427214 Valves HOERBIGER HYDRAULIK KG 4 Sept 1973 [4 Sept 1972] 41590/73 Heading F2V An electromagnetically-operated valve has a ball closure member 5 loaded by a spring 6 on to a seat formed in a central longitudinal bore 3 of a core 1 and pressure balanced by inlet fluid acting on a piston 8 and communicated thereto by passages 12, 13. Energization of coil 20 moves the armature 21 which acts on the piston to move the ball off its seat to communicate the inlet with outlet passages 10, 11.