baber/WOPTO huggingface dataset:
Patent GB-1441311-A (GB)
Title: Safety device for installations or apparatus having a space for containing a medium under pressure
IPC: B01J3/00
Filed: 1973-12-10
Abstract: 1441311 Pressure relieving device KERNFORSCHUNGSANLAGE JULICH GmbH 10 Oct 1973 [11 Oct 1972] 47384/73 Heading F2P [Also in Divisions B1 F1 and G6] A safety device, Fig. 1, for relieving excessive pressure in a pressure vessel, e.g. a reactor or pipe, comprises an inner wall 3 which completely covers a relatively weak wall portion 1 of the vessel or pipe and overlaps the surrounding stronger wall portion 2, at least one passage 5 being provided for restricted flow of pressurized medium from the vessel or pipe into the interspace between the inner wall 3 and the weak wall portion 1. Thus if the weak wall portion 1 bursts the pressure medium exhausts at a controlled rate through the passage(s) 5. The wall 3 is not in contact with the wall 2. In Fig. 1 the inner wall 3 is a plate having projections 4 on its edges, the projections being possibly provided with grooves 7. In Fig. 2 the device is provided in a coaxial double pipe 2, 2a for conducting a cold gas stream 8 and a hot gas stream 9. The inner wall 3 being tubular. Since the pipes are rigidly connected between a pressure vessel 11 and a prestressed concrete container 13, the pipe 2 itself constitutes the weak wall portion. A temperature compensator 14 is provided in the pipe 2. With a long pipe, Fig. 3 (not shown), the weak wall portions are provided between bursting resistant collars (17), adjacent collars being braced by longitudinal elements extending therebetween.
Patent GB-1032566-A (GB)
Title: Organomagnesium compounds
IPC: C07F3/02
Filed: 1963-12-03
Abstract: Organo magnesium compounds of the formulae RMgX and R2Mg where R is a hydrocarbon radical and X is a halide are prepared by reacting magnesium in an inert atmosphere with a hydrocarbon halide dissolved in a chlorinated mono- or bicyclic aryl, which hydrocarbon halide is more reactive with magnesium than the chloroaryl.  The reaction may be started by reacting a small amount of chloroaryl with clean magnesium, i.e. with freshly exposed surfaces and moisture-free.  The hydrocarbon halide in the chloroaryl is then added slowly.  The hydrocarbon halides may be dodecyl iodide or bromide, decyl iodide or bromide, octadecyl iodide, methyl iodide, ethyl bromide, ethyl iodide and chloride, tetradecyl bromide, nonyl iodide, nonyl chloride, naphthyl bromide and iodide, phenyl bromide, hexyl iodide, 2-ethylhexyl bromide, butyl bromide or chloride, octyl iodide, cyclohexyl-iodide, p-tertiary butyl phenyl iodide, benzyl iodide, hexadecyl chloride, trifluoromethyl alkyl bromide, bromotoluene, propargyl bromide, cetyl iodide and secondary and tertiary alkyl bromides and iodides.  Preferred chloroaryls are mono- and di-chlorobenzene, chlorotoluene, chloroxylene and chloronaphthalene.
Patent GB-1032634-A (GB)
Title: Improvements in or relating to pulse circuits for handling pulse trains derived from character scanning devices
IPC: G06V10/30
Filed: 1962-12-17
Abstract: 1,032,634. Pulse discriminating circuits. CHARACTER RECOGNITION CORPORATION. Dec. 17, 1962 [Dec. 20, 1961], No. 47618/62. Heading H3P. In a character scanning system, a circuit for eliminating pulses having less than a predetermined area comprises a diode AND gate A fed with input pulses on line 12 and controlled by input pulses after integration in a low-pass filter 1. The gate A is thus only opened by input pulses having sufficient area to build up an appreciable output from integrator 1. The slope of the leading edge of pulses passing the gate A is reduced by the effect of the integrator 1, but the trailing edge is unaffected. Pulses having sharp leading and trailing edges are obtained at 18 by means of a bi-stable circuit SW, set by the leading edge of pulses at 12 and reset by the trailing edge of any pulse passing the gate A. Fig. 2 shows a suitable gate and integrator comprising diodes X-1, X-2 biased so as to be normally conductive. Negative input pulses at 10 will cut off diode X-1, but no output will be received at 15 until the integrating capacitor C-1 is charged sufficiently to cut off diode X-2 as well. The integrating resistor R-1 may be replaced by an inductor. Resistor R-3 is included to compensate for the effect of R-1 or the operating levels of lines 12, 13 may be made different by changing the value of R-3. The invention is particularly applicable for use in eliminating noise from photoelectric or magnetic scanning devices SC in character recognition apparatus.
Patent GB-1203575-A (GB)
Title: Polyepisulphide compositions
Inventor: ADAMEK STEPHEN
IPC: C08L81/02
Filed: 1966-10-27
Abstract: 1,203,575. Curing polymers of episulphides. DUNLOP CO. Ltd. (S. Adamek). 24 Oct., 1967 [27 Oct., 1966], No. 48155/66. Heading C3R. Elastomeric episulphide polymer compositions are obtained by reacting an episulphide polymer having a molecular weight of from 5000 to 10000 and at least one terminal thiol and one terminal amino group, with a polymeric epoxide having at least two epoxy groups and a molecular weight of 350 to 1100, the amount of epoxide being not more than 40% by weight of the total polymer content. The episulphide polymer may be prepared as described in Specification 1,109,164. Examples of epoxides are epoxidized polybutadienes and Novalacs and glycidyl derivatives of bis-phenol A. Polyfunctional cross-linking agents such as glycerine may be used in conjunction with a diepoxide. A plasticizer may be incorporated, e.g. hydroxyquinoline, low molecular weight polymers containing thiol end groups, e.g. polyepisulphides and formaldehyde-hydrogen sulphide addition products. Fillers and additives such as Hi-Sil (registered Trade Mark), carbon black, clays, calcium carbonate and stearic acid may also be added. The reaction may be effected at room temperature but preferably at 250‹ to 350‹ F. Reference has been directed by the Comptroller to Specifications 1,082,565 and 1,146,597.
Patent GB-1115035-A (GB)
Title: Production of fibrous sheet materials including a bonding agent
Inventor: JAKUBOVIC ARMAND OTTO
IPC: D06M17/00
Filed: 1963-12-06
Abstract: Fibrous products are bonded by applying to at least one product a bonding medium comprising a mixture of a fibre- or film-forming polyamide which is soluble in an alcohol-water mixture, and an organic acid curing agent, drying without curing at a temperature not above 90 DEG C, bringing a surface of the product into contact with another surface, and subjecting the surfaces to pressure at a temperature above 90 DEG C to cure the bonding medium and bond the surfaces.  The fibrous products may be woven or non-woven, and the polyamide may be solubilized by reaction with an aldehyde and an alcohol to form, e.g. a methoxymethyl derivative.  A plasticizer, e.g. paratoluenesulphonamide, may be mixed with the polyamide. Curing agents referred to are citric, aconitic, oxalic, toluene-suphonic, phthalic, salicylic, tartaric, sulphanilic, tannic and thiosalicylic acids.  In Fig. 7 (not shown) solubilized polyamide and citric acid are dissolved in the same solvent mixture as above, and a cotton batting or sliver impregnated with this solution.  The bonds formed withstand laundering and dry cleaning.
Patent GB-1119898-A (GB)
Title: Model to die reversal means and method
IPC: B23Q35/18
Filed: 1966-10-28
Abstract: 1,119,898. Copy-milling. DATA RESOLVED TOOLS PTY. Ltd. 28 Oct., 1966 [3 Nov., 1965], No. 48342/66. Headings B3B and B3K. [Also in Division G3] A model to die reversal arrangement comprises a cutting head and work-table, relatively movable in X, Y and Z directions, a tracer and a model table, relatively movable in X, Y and Z directions, electrical servo-loops coupling the respective tool and tracer movements and a direction reversing device in at least one of the servo loops. As shown, a model 61 is mounted on a table 62, tiltable about the X axis on a table tiltable about the Y axis, the tilts being controlled by threaded members 68, 69. An hydraulic tracer head 78 is moved about the X, Y axes by electric motors 80, 81 having pinions engaging precision racks. The motors are connected in servo-loops comprising synchros 90, 91 responsive to X, Y movements of a milling machine 50, and synchros 100, 101 responsive to movement of the tracer head, the motors being energized by error signals through amplifiers 110, 111. Zero off-sets are set in by differential synchros 120, 121. The direction of movement of the tracer head, in response to a movement of the milling cutter, is controlled by changeover switches 130, 131. Vertical movement of a ball-ended feeler member 79 of the tracer head 76 actuates an hydraulic spool valve 78 controlling an hydraulic cylinder for the Z axis movement of the milling machine. Displacement of the cylinder 56 is sensed, through a rack and pinion, by a synchro 92 connected in a servo-loop with a synchro 75, the error between the positions of the synchros energizing through an amplifier 112, a motor 82 positioning the feeler 79 to the null position of the spool valve 78. The relative direction of a milling cutter and the feeler is reversed through a change-over switch 132.
Patent GB-1430218-A (GB)
Title: Cameras
IPC: G03B17/42
Filed: 1973-10-15
Abstract: 1430218 Camera mechanisms LURE CAMERA Ltd 15 Oct 1973 [13 Oct 1972] 48548/73 Heading G2A In a camera having a curved shutter blade 26 which moves in an arcuate guide slot 23, the shutter is actuated and tensioned by one arm 34 of a bell-crank lever 30, the lever itself being actuated by the film transport mechanism. Shutter and lever are connected by a spring 27. The blade 26 is carried by a plate 24 pivoted on a pin 25, and is normally biased by spring 27 so that the optical path 16 through the objective 12 is closed. Plate 24 carries a wedge-shaped ramp 35. The film-strip 75 is wound from a storage well 50 across the exposure window on to a take-up drum 51 housed in another well 52. Mounted on the end, of drum 51 are four radial ribs 55 which co-operate with the stepped arm 36, 37 of lever 30. In Fig. 2 (not shown) the mechanism is in the position reached after the shutter has been released, the end 36 of arm 37 being held by spring 27 against a resilient stop 38 formed on the camera housing. From this position the film transport is operated by rotating drum 51 anti-clockwise. One of the ribs 53 engages the bell-crank lever and pivots it also anticlockwise. The stepped end 33 of arm 34 of the lever slides over the ramp portion 35 and then latches underneath it, Fig. 6. The shutter mechanism is now in the tensioned state. The shutter release is formed by a member 40 having a large ring 41 which fits on the lens barrel 42, and the member 40 is biased clockwise by a leaf-spring 43 secured at one end to the member and at the other end to the camera body. An extension arm on member 40 ends in a catch 39. In the released position, (Fig. 2) this catch bears against the bellcrank lever, and when the latter is pivoted into the tensioned position of Fig. 6, the catch 39 latches above the lever to hold it against clockwise rotation. A button 44, which also forms part of the member 40, is accessible through an opening in the camera casing, and is pressed to release the shutter. This causes the member 40 to rotate anticlockwise against spring 43, which draws the catch 39 clear of the bell-crank lever. This latter is now pivoted clockwise, and impacts the shutter by way of the ramp 35. This is driven momentarily anticlockwise, so uncovering the lens to effect an exposure. A passage 70 is formed in the camera body, and at the time of exposure an additional mark 73 is formed in the margin of the film-strip, This mark can be used for accurately positioning the positive in a film processing and printing apparatus. The shutter blade 26 has an auxiliary leaf portion 26a for closing passage 70 except when an exposure is being made. The interior of drum 50 is hollow, and receives the socket of an impact-type flash-cube. Rotation of the drum 51, and its end-plate 54 which carries the ribs 53, can be arranged to rotate the flash-cube and fire the flash at the appropriate moment.
Patent GB-1467560-A (GB)
Title: Preparation of ethylamine derivatives
IPC: C07D317/52
Filed: 1975-11-27
Abstract: 1467560 2 - (3,4 - Methylenedioxyphenyl)- ethylamines NICHOLAS INTERNATIONAL Ltd 27 Nov 1975 48709/75 Heading C2C A compound of formula where R and R<SP>1</SP> are hydrogen or C 1-4  alkyl is made by (1) reacting piperonal (or a functional derivative thereof) with a compound of formula to give a compound of formula (2) halogenating this compound (e.g. with SOCl 2 ) to give a compound of formula and at (3) hydrogenating this compound in the presence of platinum oxide as a catalyst to give the desired compound.
Patent GB-1287499-A (GB)
Title: Improvements in or relating to digital to analogue converters
IPC: F15C4/00
Filed: 1970-10-14
Abstract: 1287499 Valves SCHERING AG 14 Oct 1970 [18 Oct 1969] 48800/70 Heading F2V [Also in Divisions G3 and G4] A valve 30, Fig. 5, comprises diaphragms 40, 41 joined by rod 42. When fluid is applied to input A the diaphragms move leftwards so that fluid applied to input C can pass to output E. When fluid is applied to input B fluid can flow from D to E. The arrangement of two such valves as shown in Fig. 5 provides a bi-stable unit.
Patent GB-1524580-A (GB)
Title: Internal combustion engine with equipment for cleaning the cooling system
IPC: F02B77/04
Filed: 1976-11-23
Abstract: 1524580 Cleaning IC engine cooling fins KLOCKNER-HUMBOLDT-DEUTZ AG 23 Nov 1976 [6 Dec 1975] 48827/76 Heading F1B [Also in Division F4] Flared nozzles 7 direct jets of compressed air through the gaps 3 between the cooling fins 4 of the cylinders 1 and the cylinder heads 2, in a direction opposite to the normal flow of cooling air, to dislodge dirt. The flow of compressed air from a reservoir 12 is controlled by a solenoid valve 11 which is opened for a period in response to operation of the ignition lock 14, operation of the oil pressure warning light, the engine temperature or the generator voltage. The reservoir 12 is supplied by a compressor 13 supplying a vehicle braking or transmission system.
Patent GB-1348153-A (GB)
Title: Process for the purification of halogen effluent
IPC: C01B7/01
Filed: 1971-10-22
Abstract: 1348153 Purification of halogens; nitrosyl chloride PULLMAN Inc 22 Oct 1971 [16 Feb 1971] 49186/71 Heading C1A Purifying a halogen stream containing hydrogen halide, water, nitroxyl halide, the concentration of water being not more than 1À5 weight per cent by contact with silica or silica-containing particles having a surface area of at least 50 m.<SP>2</SP>/g. and maintaining a mole ratio of between 1 : 2 and 1 : 100 nitroxyl halide to hydrogen halide to convert the nitroxyl halide to nitrosyl halide at a temperature between 0 and 450 F. under a pressure of up to 50 atmospheres, separating the nitrogen containing compounds and recovering purified halogen. The contacting with silica is carried out in the presence of a hydrogen halide containing the halogen corresponding to the halogen product. The halogen stream may be one from the oxidation of an inorganic halide such as hydrogen halide or an alkali metal halide (KCl), the oxidizing agent being oxygen or air promoted with a nitrogen-oxygen containing compound such as NO 2 , NO, nitroxyl halide, nitrosyl halide, nitric acid or mixtures thereof. If desired, nitroxyl halide or nitric acid may be used in the absence of air or oxygen. Any excess water (above 1À5%) should be removed by a conventional drying agent, e.g. concentrated H 2 SO 4 , CaCl 2  or SiO 2  before passing the gases to the high surface silica. The silica or molecular sieve may be in the form of a fixed or fluidized bed. The nitrogen compounds in the product are removed, e.g. in an inert still. When chlorine is the halogen concerned, the gaseous product contains nitrosyl chloride.
Patent GB-1067850-A (GB)
Title: Improvements in and relating to the production of vinyl acetate
Inventor: RUTHERFORD GRAHAM HUGH
IPC: C07C69/01
Filed: 1963-12-13
Abstract: A process comprising producing a mixture containing acetaldehyde and a molar excess of vinyl acetate relative to said acetaldehyde, comprises contacting ethylene with a palladium salt other than the fluoride either under substantially anhydrous conditions or in the presence of a minor amount of water and in the presence of acetic acid, acetate ions, a redox system and molecular oxygen, separating vinyl acetate from the reaction mixture, converting a part of the separated vinyl acetate to a mixture of acetaldehyde with acetic acid and/or acetic anhydride, and passing at least part of the acetic acid and/or acetic anhydride to the vinyl acetate production step.  The reaction is preferably effected at elevated pressures at 50-160 DEG C. and preferably in the presence of an alkali metal halide other than the fluoride, e.g. a chloride such as NaCl or LiCl.  The preferred palladium salt is the chloride and the acetate ion may be provided by adding an ionizable acetate to the mixture or it may be formed in situ by the addition of an appropriate metal salt which can react with the acetic acid.  The reaction may be effected in the presence of an amide, a nitrile, a ketone, a sulphoxide or an ester and the redox system may be organic, but is preferably inorganic, e.g. cupric chloride or acetate.
Patent GB-1206618-A (GB)
Title: Improvements in or relating to the manufacture of non-woven fabrics
IPC: D04H3/07
Filed: 1967-10-13
Abstract: 1,206,618. Non-woven fabric. ORCON CORP. 31 Oct., 1967 [31 Oct., 1966], No. 49438/67. Heading D1R. A non-woven fabric F is made by forming a conveyor belt 36 to a tube shape about a cylindrical support 27 with the longitudinal axis of the belt parallel to the longitudinal axis of the support guiding a plurality of warp strands- WS onto the outside of the tubular conveyor belt 36 and aligned with the longitudinal axis thereof, winding fill strands FS around the warp strands WS whilst applying a binder to the fill strands to bond the warp and fill strands together, and transporting the non-woven fabric formed along the support solely by positive drive of the belt and frictional contact of the fabric F on the belt 36. There may be a release film, e.g. of polypropylene, between the conveyor belt 36 and the fabric, or the conveyor belt may be coated with the release film. Compressed air can be injected between the conveyor belt and the support. The warp strands WS can be formed into a cylndrical bundle around the cylindrical support by reel guides 24 and constricting ring 26. The spacing of the warp strands can be precisely controlled by tandem offset guides 23, 24 (Fig. 2). The fill strands can be wound onto the warp strands from packages 28 mounted on a drum 29 which rotates concentrically around the support 27. The binder, e.g. a filmforming polymer which may contain a wetting agent, can be applied to the fill strands by running them through a magazine 33 of binder which is also mounted on drum 29. The binder magazine can be kept filled during operation by feeding binder from a reservoir (58) into an annular ring 64 also mounted on the rotating drum, the ring 64 being connected to the binder magazine 33. Centrifugal force acting on the binder whilst in the ring distributes around the ring to the outlet to the binder reservoir. The overflow from the magazine can be returned to the reservoir via a second stationary annular ring 67 which is concentric with the first ring. The fabric can be slit and spread into a flat sheet and wound onto a storage roll 49, (Figs. 3 and 4). The speed of the storage roll and the conveyor belt are coordinated to avoid stressing the fabric.
Patent GB-1237231-A (GB)
Title: A groove cutting machine
Inventor: CHERNIKEV SERGEI SERGEEVICH
IPC: B23D3/02
Filed: 1968-10-18
Abstract: 1,237,231. Broaching machines. EXPERIMENTALNY NAUCHNO - ISSLEDOVATELSKY INSTITUT METALLOREZHUSCHIKH STANKOV. 18 Oct., 1968, No. 49530/68. Heading B3L. A machine for grooving the exterior of a workpiece 15 comprises a stationary cutter head 22 encircling the workpiece axis and through which the workpiece is moved by a ram 4. The workpiece is clamped at one end to the ram 4 by a clamp 6, and at the other end by a clamp 3 which also acts as a piston in a tube 2. The tube 2 with clamp 3 act as a single-acting ram, and the fluid chamber 21 thereof is connected via pipes 20 to one side of the piston 17 of a double-acting hydraulic drive 5 that drives the ram 4, the connection ensuring the simultaneous movement of the clamps 3 and 6. The cutting tools 25 are carried by holders 29 movable radially by bell-crank levers 32 adjustable by a pusher 34. The cutters are incrementally moved in between cutting strokes by rotating a nut 41 to lower the pusher 34. The nut 41 is rotated by an hydraulic ram 46, 48 controlled to pre-set requirements by proportioning device 47. At the end of each cutting stroke the cutters are withdrawn for the return stroke and then advanced to a cutting position by a linkage 53, 63, 64, 65 and an extensible link 60, 62 adjusted hydraulically by ram 56. For cutting blind grooves the cutters may be withdrawn and advanced by the extensible link 60, 62 acting with a cam 55.
Patent GB-1372354-A (GB)
Title: Chain cable
Inventor: BRUCE P
IPC: F16G13/12
Filed: 1970-10-20
Abstract: 1372354 Chains P BRUCE 20 Jan 1972 [20 Oct 1970] 49665/70 Heading F2Q A chain comprises a plurality of links each of which includes a bar member 1 of U-shape and a cylindrical pin 2 attached integrally thereto and bridging the ends of the U-bar member, the diameter of the pin 2 being substantially equal to the gap between the ends of the U-bar member. The pin may be formed of a hollow cylindrical member.
Patent GB-1528354-A (GB)
Title: Laminated fibrous structure
IPC: B32B5/26
Filed: 1975-11-10
Abstract: 1528354 Gas/liquid filters IMPERIAL CHEMICAL INDUSTRIES Ltd 10 Nov 1975 [18 Nov 1974 19 Nov 1974 8 Jan 1975] 49736/74 50001/74 and 764/75 Headings B1D and BIT [Also in Divisions B5 Cl and Fl] A laminated fibrous structure comprises an assembly of inorganic fibres interposed between and bonded to two unitary substrates 14, 15 the assembly of fibres comprising a plurality of substantially parallel laminae 16, each of the laminae comprising resin-free fibres and being oriented in a plane substantially normal to the surface 17 of at least one substrate. The substrate may be of board, paper, woven or non-woven textile, foil or plate, preferably formed of refractory fibres e.g. alumina, zirconia or aluminosilicate optionally bonded or of sheet form aluminium or steel, specified fibres for the laminae being of glass, alumina-silicate, silica, alumina and zirconia. Bonding may be effected using a ceramic cement, e.g. an alumino-silicate, silica sol, alumina sol, zirconia sol, aluminium phosphate, fine clay cement or rubber latex. Figs. 3 to 8 (not shown) illustrate use of the structures to filter liquid or gas, particularly I.C. engine exhaust gas.