baber/WOPTO huggingface dataset:
Patent GB-823610-A (GB)
Title: Improved vapour and liquid contact tower
IPC: B01D3/18
Filed: 1956-05-10
Abstract: 823,610. Contacting vapours with liquids. FOSTER WHEELER Ltd. May 10, 1956 [May 10, 1955], No. 14645/56. Class 55 (2). A vapour-liquid contact tower comprises a number of spaced horizontal contact plates with a liquid downcomer between each plate and openings in each plate to allow vapour to pass up through the plates and the liquid held on them, means being provided for controlling the flow of liquid from the plates in such a way that with a constant rate of liquid flow on to the plates the amount of liquid held on them varies in the same sense as the rate of upward vapour flow. The arrangement shown, Fig. 1, has each contact plate 11 provided with a weir 12, a depending baffle plate 17 which with the wall of the column defines a liquid downcomer 18 and with the plate below an orifice 21 through which liquid is discharged on to the plate below, and a retainer plate 22 which with the weir 12 defines an orifice 27 through which liquid is discharged from a plate into the downcomer 18 and over which liquid may also be discharged into the space 23 leading to the down-. comer 18. Increased upward vapour flow causes a mixture of vapour and liquid to form on each plate in the space above the bubble caps and the orifice 27 and between a baffle plate 17 and a retainer plate 22 thus increasing the volume of liquid held on the plate. In the modification shown in Fig. 3 alternate contact plates have a downcomer 44 and two retainer plates 34 and two downcomers 39 and retainer plates 46, while in Fig. 5 each plate has a series of tubes 60 leading from a point above each tray into the downcomer leading to the tray below.
Patent GB-1140510-A (GB)
Title: Improvements in or relating to gas lasers
Inventor: MENOWN HUGH
IPC: H01S3/032
Filed: 1967-03-30
Abstract: 1,140,510. Lasers. ENGLISH ELECTRIC VALVE CO. Ltd. 9 Jan., 1968 [30 March, 1967], No. 14664/67. Heading H1C. An ion discharge laser comprises a quartz capillary tube 1 containing argon gas, and a coolant jacket formed by. an outer quartz tube 2 united at its ends with the capillary tube, the outer tube being formed with one or more corrugations which relieve tensile stresses due to differential expansion of the two tubes during operation. The outer tube may have the corrugations extending over a half or the whole of its length, and is provided with inlet and outlet pipes 3, 4 to lead coolant (normally water) into the coolant space 5 between the tubes.
Patent GB-749804-A (GB)
Title: Improvements in or relating to process for treatment of waste liquor from beet sugar molasses
Filed: 1954-05-20
Abstract: A precipitate of barium glutamate is obtained by hydrolysing with barium hydroxide a waste liquor from beet sugar molasses after sugar has been at least partially removed, neutralizing said hydrolysate with an acid reagent which forms a water-soluble barium salt and adding sufficient methanol to the neutralized hydrolysate to precipitate barium glutamate.  Subsequently the precipitate is dissolved in water, the barium precipitated and separated as a water-insoluble salt, the pH adjusted to between 4.5 and 7.5, the solution concentrated in order to remove inorganic salts by crystallization, and the pH of the remaining solution adjusted to 3.2 when glutamic acid may be crystallized out.  The barium glutamate precipitate may be obtained by adding between 2 and 10 parts of methanol per part of waste liquor employed.  Neutralization of the hydrolysate may be effected with hydrochloric acid.  The barium may be precipitated as a water-insoluble salt by means of sodium carbonate, potassium carbonate, sodium bicarbonate, sulphuric acid, sulphur dioxide or carbon dioxide.  Specification 670,003 is referred to.
Patent GB-900364-A (GB)
Title: Improvements in or relating to draught excluders
IPC: E06B7/18
Filed: 1960-04-28
Abstract: 900,364. Threshold bar weather excluders. WALTERS, W. April 27, 1961 [April 28, 1960], No. 14870/60. Class 20 (3). A threshold bar weather &c. excluder of the section shown in Fig. 2 is provided at each end with a securing-plate 17 slidably secured on a solid level platform 16 formed in the end portion of the bar, by a bolt 20 located in a slot 18 of the plate and screwed into the platform, the plate 17 having spikes 19, Fig. 1, at its outward end for entering a door jamb. Each plate has a recess in its upper surface closed at its outer end and having a run-out at its inner end for rain falling thereon to drain into the channel 12 and run out through holes 15.
Patent GB-1160931-A (GB)
Title: Method of Producing Semiconductor Devices
Inventor: DALE BRIAN
IPC: H01L21/60
Filed: 1967-03-31
Abstract: 1,160,931. Welding by pressure. SYLVANIA ELECTRIC PRODUCTS Inc. 31 March, 1967 [1 April, 1966], No. 14925/67. Heading B3R. [Also in Division H1] Semi-conductor device wafers with leads extending beyond their peripheries, attached by one of the leads to a supporting grid to form an array are bonded to respective ones of an array of groups of conductive tracks on an insulating board by moving the board so that one group of conductive tracks is at a bonding station, moving the supporting grid so that one of the elements is at a transfer position, moving that element from the transfer position so that its leads are in register with the group of conductive tracks, and bonding them to the conductors. The process is repeated to attach each wafer to a group of conductive tracks. In one embodiment in which the grid and insulating board are mounted for independent two dimensional and rotational movement the board is moved so that each element in turn is brought into register with a group of conductors as shown in Fig. 6, beneath a welding tool. This then presses the leads 21-24 into contact with the conductive tracks 31-34 and forms ultrasonic welds between them. Lead 24 is then cut to detach the bonded element from the grid and another element and group of conductors brought into register and welded and so on. Alternatively lead 24 is provided with a weakened portion at which it breaks when the grid or board is moved to a new position. In another arrangement the grid and board remain spaced apart during the process, the grid being moved after each welding to position another element beneath a suction head by which it is transferred to the welding location after being severed from the grid. In all cases when all the elements have been attached the board is divided into strips, Fig. 10, and a pair of combs with spaced interleaved groups of teeth constituting terminal conductors welded to the conductive tracks on the strip. The strips are then cut between the elements to form two strings of headers which are encapsulated in plastic before the terminal conductors are separated from the combs. Diodes and integrated circuits may be attached to headers or printed circuit boards by similar methods to the transistors shown. Preferably the grid and leads are attached to the device wafers while they form part of the common wafer.
Patent GB-630487-A (GB)
Title: Improvements in and relating to the alkylation of phenols
IPC: C07C37/14
Filed: 1946-05-17
Abstract: Phenol or a cresol is alkylated by treatment with an aliphatic mono-olefine in the presence of a catalyst comprising either oleum of at least 20 per cent strength or the reaction prodduct of a portion of the compound to be alkylated and concentrated sulphuric acid or oleum of less than 20 per cent strength, the compound to be alkylated, the olefine, and the said reaction product if such be used, being treated for the removal of water prior to the alkylation. Olefines containing five to eight carbon atoms especially the octenes are advantageously used and are preferably of a tertiary nature. Dimers of butylene are suitable octenes. The acidic catalyst preferably amounts to 3 to 15 per cent by weight of the phenol or cresol to be reacted.  The reactants and catalyst may be dried by any convenient method, e.g. by distillation or with water-absorbing materials.  It is preferred to operate at below 50 DEG  C. although temperatures of 20-80 DEG  C. are stated to be suitable.  In examples (1) excess commercial cresylic acid is reacted with 98 per cent sulphuric acid, to form a catalyst, distilled to remove water, and dried butene dimer added at 40 DEG  C. to produce a high yield of octyl cresols compared with a similar experiment in which the reactants are not dried; (2) is a repetition of (1) using mixed 2 : 4 : 4-trimethyl pentene-1 and 2 : 4 : 4-trimethyl pentene-2 as olefine with various reaction times; in (3) dry butene dimer and commercial cresylic acid are reacted at 20 DEG  C. to produce octyl cresols in the presence of a catalyst prepared by treating commercial cresylic acid with 20 per cent oleum at about 90 DEG  C. and in (4) 20 per cent oleum is added to excess dry commercial cresylic acid and reacted at 75 DEG  C. to form a catalyst when dry butene dimer is added with the temperature at 20 DEG  C. and octyl cresols obtained. In the Provisional Specification the process comprises reacting a phenol with an olefine in the presence of a strongly acid catalyst under substantially anhydrous conditions or in the presence of not more than one gram molecule of water per gram molecule of strongly acid catalyst present.  Phenol, cresols and xylenols are specified p phenols and anhydrous zinc chloride, ferric chloride, aromatic or aliphatic sulphonic acids, phosphoric acid, phosphorous pentoxide and hydrogen halides are specified catalysts.
Patent GB-965068-A (GB)
Title: Improvements in clothes posts
Inventor: EUSTON VINCENT GEORGE
IPC: D06F53/04
Filed: 1963-04-17
Abstract: 965,068. Clothes posts. R. P. ALLISON Ltd. July 12, 1963 [April 17, 1963], No. 14985/63. Heading A4U. A tubular clothes post B, through which tubular line support arms C pass at right angles, includes caps A, A 1  of plastics material which are applied, preferably as a press fit, over the ends of the post B and arms C to prevent the entry of rain water.
Patent GB-1356356-A (GB)
Title: Device for forming chain links from round wire
IPC: B21L1/02
Filed: 1972-03-30
Abstract: 1356356 Making chains TSENTRALNOE PROEKTNO - KONSTRUKTORSKOE BJURO KUZNECHNO - PRESSOVOGO MASHINOSTROENIA 30 March 1972 14988/72 Headings B3E and B3A In a chain making machine, the mandrel 1 around which each link is formed is in two parts, Fig. 3, part 3 being fixed and part 2 movable, the two parts together forming a groove composed of a curved-section formation 13 on part 3, and a formation on part 2 having a section with a curved portion 14 and straight portion 15 of a length up to three tenths of the wire diameter, and in operative position the movable part 3 is rigidly supported by a toggle linkage 16, 18, near its dead centre position, so that the mandrel parts cannot separate and give rise to flash on the link. In Fig. 5, the various steps in the cycle which forms a link are performed in sequence by cams. Wire stock 28 is fed by rolls 23 through a straightener 29 to abut stop 30, and a length is cut off by slider 31. Pusher 33 advances the length through the previously formed link to lie adjacent the mandrel, and rollers 37 form the new link around the mandrel. The link is then grasped by jaws 40 (Fig. 3), and the movable part 2 of the mandrel withdrawn. The jaws 40 then withdraw the link and turn it through 90 degrees ready for insertion of the next length.
Patent GB-1192159-A (GB)
Title: Blades for Turbomachines
IPC: F01D5/30
Filed: 1969-03-21
Abstract: 1,192,159. Turbines; axial flow compressors and pumps. SULZER BROS. Ltd. March 21, 1969 [March 26, 1968], No. 14991/69. Headings F1C and F1T. A rotor or stator blade for a turbine, compressor or pump comprises an aerofoil portion 12 and a root portion 11 retained within a cylindrical bore 22 in a root part 23 by a nut 24 screwed on to the root portion and engaging a wedging device. The latter comprises a clamping ring 19À1 fitting over a cylindrical surface 13 of the root portion 11 to engage a plane surface 16 normal to the axis of the surface 13. The external surface 20 of the ring 19À1 is tapered and is engaged by a corresponding tapered bore in a collar 21. Thus when nut 24 is tightened against collar 21, the root portion 11 is wedged in any desired angular position within part 23. The latter is shaped for insertion in a radial hole or transverse groove in the rotor or stator. The natural vibration frequency of the blade can be altered by fitting a different clamping ring (19À2), Fig. 2 (not shown), which instead of engaging plane surface 16 engages a similar surface 17 adjacent the aerofoil portion 12. An inspection hole 26 is provided for examination of the clamping ring. The approximate natural frequency of the blade is initially set by machining a groove 25 in the root portion 11. The clamping ring 19À1 and the collar 21 may each be slit or divided circumferentially into at least two parts.
Patent GB-953627-A (GB)
Title: Evaporator
IPC: C13B25/00
Filed: 1962-04-18
Abstract: 953,627. Evaporators. DE DANSKE SUKKERFABRIKKER A.S. April 18, 1962 [April 29, 1961], No. 15018/62. Heading B1B. In an evaporator having a bundle of vertical tubes surrounded by a heating chamber, the liquid to be evaporated is supplied, via pipe 7 and conical header 6, to the top of an inner group of tubes 4 ; the mixture of boiling liquid and entrained vapour leaving the bottom of these inner . tubes enters communicationchamber 8, then flows rapidly up the tubes of the outer group 5 of the bundle, and is delivered into liquid/vapour separating chamber 10. The vapours are discharged through outlet 11. The concentrated liquid is withdrawn through outlet 12. The evaporator is suitable for use in the sugar industry.
Patent GB-352632-A (GB)
Title: Improvements in electric signalling systems
IPC: G08B3/10
Filed: 1930-05-15
Abstract: 352,632. Fire and like alarm systems. LORENZ AKT.-GES., C., 1, Lorenzweg, Tempelhof, Berlin. May 15, 1930, No. 15022. Convention date, May 28, 1929. [Class 40 (i).] In a fire, police, or like alarm system with stations arranged in branches associated with central control circuits so that any station can transmit to, or receive from, any other station, the central circuit comprises separate transmitting and receiving relays, the operation of a transmitting relay disables the corresponding receiving relay, and any station may signal to interrupt a transmission for the purpose of initiating a more urgent one. As shown, three branches 1, 2, 3, each with two stations, are controlled by the central circuit below the dot-and-dash line. Signals are sent by opening a closed loop circuit, the resultant relapses of a transmitting relay, such as A for branch 1, being repeated at 1a to receiving relays E, F for the other branches which repeat at 5e, 6f by shortcircuiting the loop circuits in branches 2, 3. The transmitting relays B, C for these branches do not fall back since they are held first over both windings when 5e, 6f break and then over winding 2<1> when 5e, 6f have changed over. Resistance Wi is made equal to the loop resistance. In a modification, the receiving relays D, E, F are neutrallyadjusted polarized relays and are operated in one or other direction by charge and discharge of condensers in their circuits when the transmitting contact such as la makes and breaks. The interrupting signal comprises a prolonged opening of a loop which effects the short-circuiting of other loops.
Patent GB-645102-A (GB)
Title: Improvements in or relating to endless chain feed mechanisms, more particularly for use in book binding machinery
IPC: B65H5/16
Filed: 1948-06-03
Abstract: 645,102. Endless-chain conveyers. AULD, J. T., and AULD, A. A. June 3, 1948, No. 16041. [Class 78 (i)] In conveying apparatus of the kind having pushers mounted on an endless chain for feeding articles along a support the ends of the feed flight of the chain are deflected at a small angle to the direction of travel in a straight line between the point of normal feed engagement of a pusher with an article and a point of first or last engagement therewith adjacent an edge of the article. Book inners 3 are supported on a rail 5 and are conveyed along a channel comprising side frames 1 and 2 by means of pushers 6 on an endless chain 7, the spines 4 of the book inners projecting above the tops of the frames 1 and 2. The portions 7c, 7d of the chain 7 adjacent the ends of the feed flight of the chain are inclined by being passed over idler rollers 9, 10, 11 and 12 and a drive sprocket 19 engaging top and bottom flights of the chain. Roller 9 is mounted in a pivoted frame 14 on side frame 1 which is locked in adjusted position by a clamping screw 15. The pushers 6 travelling from right to left on the upper run thus engage the inners at their lower right-hand edge at any desired spacing. A jockey roller 20 presses the chain against the driving roller which is mounted in a recess 8 in frame 1 on a shaft 21 supported in side frame 1 and an extension of the frame. Intermittent motion is imparted to a loosely mounted plate 24 by a rack 29 oscillated by a crank 30 driven from motor 35, and a ratchet gear comprising a pawl 26 mounted on a loose pawl carrier 27 which also carries a pinion 28 meshing with the rack, and a ratchet wheel 25 carried by the plate 24. The position of the pushers 6 along the feed flight relative to the throw of the rack is adjusted by relative rotation between plate 24 and a plate 23 which is fixed to shaft 21. Plates 23 and 24 are then coupled together by a pin 37. Specifications 629,003 and 630,529, [both in Group XV], are referred to.
Patent GB-1468745-A (GB)
Title: Cooling system
IPC: G12B15/02
Filed: 1974-04-05
Abstract: 1468745 Refrigerating PHILIPS GLOEILAMPENFABBIEKEN NV 5 April 1974 [9 April 1973] 15128/74 Heading F4H A cooling system for cooling a closed space, e.g. a dewar vessel 1, comprises a cooling coil 3 located in the closed space, a heat exchanger 11 for exchanging heat between the inlet and outlet paths of the cooling coil 3, a heat exchanger 6 in contact with the cold head 7 of a cold gas refrigerator 8, a pump 9, and a flow restriction device 10 situated between the heat exchanger 11 and the cooling coil 3. The device 10 is preferably situated inside the vessel 1, and may either be a laminar-flow or a turbulent-flow restriction. The cooling system may also be modified (see Fig. 2) for use with a plurality of dewar vessels 20-22. In this case, the system includes low and high pressure compressors 51, 52, cooling heat exchangers 54, 60, 61, a throttle valve 57, and a heat exchanger 58 wherein the cooling medium in the circuit, e.g. helium, is fully liquefied before entering the inlet pipes of the heat exchangers 23-25. In normal operation of the cooling system, for example the system shown in Fig. 1, heat leakage into the space 2 will be negligible and no heat exchange will take place in the heat exchanger 11. However, under abnormal conditions, for instance the vessel 1 being damaged, heat exchange will take place in the heat exchanger 11, causing the flow resistance in the flow restriction device 10 to increase, thereby reducing the rate at which cooling fluid is supplied to the cooling element 3.
Patent GB-956847-A (GB)
Title: Bellows pump for gases
Inventor: MALIZARD MAX
IPC: F04B45/02
Filed: 1963-04-17
Abstract: 956,847. Bellows pumps. COMMISSARIAT A L'ENERGIE ATOMIQUE. April, 17 1963 [April 21, 1962], No. 15162/63. Heading F1N. A bellows pump comprises a cylindrical casing 1 divided by a transverse partition 2 into chambers 3, 4 each containing a metal bellows. 11, 20 respectively which are connected at one end to fixed end plates 6, 5 of the casing 1 and at the other end to movable pistons 13, 22 linked together by a rod 24 passing through the partition 2. The bellows are actuated by oil pressure admitted to and exhausted from chambers 3, 4 through casing ducts 29, 30 connected to a distributing valve (not shown). In the position shown, bellows 11 delivers compressed air through a pipe 38 past a ball valve 63 and through pipes 50, 48 to a delivery pipe 42 whilst bellows 20 draws air from a pipe 41 through pipes 43, 46 past a ball valve 59 and through a pipe 37. On reversal of stroke valves 59, 63 automatically close and valves 60, 62 open.
Patent GB-1162573-A (GB)
Title: Improvements in or relating to Metal Powders
Inventor: TRACEY VICTOR ALLEN
IPC: F16C33/12
Filed: 1967-04-03
Abstract: 1,162,573. Sintered copper alloys. INTERNATIONAL NICKEL Ltd. March 22, 1968 [April, 1967], No. 15195/67. Heading C7A. A mixture of elemental powders for making articles such as bearings by compacting and sintering consists, by weight, of Sn 7 - 8% Ni 4À5 - 5À5% graphite 0À25 - 4% Cu and impurities - balance. The mixture may also contain a pore-forming agent or die lubricant, e.g. a metallic stearate or paraffin wax. As an example, a powder mixture is compacted at 8 t.s.i. and the resulting green compacts sintered in cracked ammonia at 760 - 830 C.
Patent GB-360810-A (GB)
Title: Improvements in or relating to electric vibratory razors
IPC: B26B21/38
Filed: 1931-05-22
Abstract: 360,810. Safety razors. TELEPHONAPPARAT-FABRIK E. ZWIETUSCH & CO., GES., 6, Salzufer, Charlottenburg, Berlin. May 22, 1931, No. 15216. Convention date, June 5, 1930. [Class 30.] In an electrically-vibrated safety razor having a normal two-edged blade 16 reciprocated in, its own plane in a direction at right-angles to the axis of the handle, the reciprocating movement along said axis of an armature 2, is transmitted to the blade by a spring-tempered, inclined round wire 5 such as a piece of piano wire fixed to the armature 2. The wire 5 engages an aperture flared at each end, in a circular movable body 7 which may rotate on its own axis, and projects above a ledge 15 in the razor head, into a central blade aperture. The armature 2 is partially surrounded by a coil 1 supplied with alternating current, and is intermittently attracted by a core 20 and returned by a spring 21. To prevent :rotation of the armature 2, its reduced end 3 has a flat 11 engaging a complementary flat in a fixed guide 10. The blade is clamped by a plate 17 and bolts 18, distance washers 19 being provided to permit the necessary freedom of the blade. The bolts 18 screw into the clamping plate 17 and are accommodated at their lower ends in oppositely directed transverse slots in the base member forming part of the handle, so as to form a bayonet connection between the assembly of the blade 16 and guard 22, and the base member.
Patent GB-544195-A (GB)
Title: Improvements in hydraulic force transmissions for weighing scales
IPC: G01G5/04
Filed: 1940-10-15
Abstract: 544,195. Weighing apparatus. AVERY, Ltd., W. &.T. (Bohannan, R. S.). Oct. 15, 1940. No. 15276. [Class 143] In a hydraulic weighing scale, a plurality of flexible diaphragms 8, Fig. IV, support the platform or bridge 22 by means of discs 10, stands 15 and links 18, permitting temporary horizontal movement of the platform under the oncoming load and avoiding tilting of the stands 15. The discs 10 are maintained in position on the diaphragms by check links 11. The liquid beneath each diaphragm communicates by a pipe 26, with the exterior of a corresponding metallic bellows 38, Fig. VII, located within an adjustable chamber 27. The pressure of the liquid, acting on a disc 39 secured to the upper end of the bellows is transmitted by a rod 42 to a knife-edge44 adjustable on a lever 45 which is common to all the bellows. The lever 45 is connected by a rod 57 and adjustable knife-edges 52, 59 to a steelyard 60. Specification 531,792 is referred to.