baber/WOPTO huggingface dataset:
Patent GB-1181908-A (GB)
Title: Method of Refining Glycol Esters of Methacrylic and Acrylic Acids
Inventor: CHROMECEK RICHARD
IPC: C07C69/54
Filed: 1968-04-29
Abstract: 1,181,908. Glycol esters of methacrylic and acrylic acids. CESKOSLOVENSKA AKADEMIE VED. 29 April, 1968 [18 May, 1967], No. 20172/68. Heading C2C. A method of purifying glycol monoesters of acrylic and methacrylic acids comprises removing diesters by crystallization from a solvent and removing free glycols by salting out from an aqueous solution. Solvents suitable for use in the crystallization stage include ether, hexane, petroleum ether, acetone, toluene, ethylacetate, chloroform and mixtures thereof, it being preferred to use a mixture of two solvents one of which is a good solvent for the diester and simultaneously a bad solvent for the monoester and the other of which acts as a solvent for the monoester. Examples of such a mixture are hexane-ether and petroleum ether-ether. The salting out process is carried out by adding an organic or inorganic salt to an aqueous solution of the impure ester. Salts mentioned include sodium chloride, potassium chloride, calcium chloride, sodium nitrate, potassium nitrate, calcium nitrate, sodium acetate, calcium acetate, phosphates, pyrophosphates and ammonium sulphate.
Patent GB-750242-A (GB)
Title: Improvements in or relating to fire-retarding boarding
IPC: E04C2/26
Filed: 1953-07-21
Abstract: 750,242. Plywood. SNITKER, J. C., and CLAUSEN, S. N. July 21, 1953 [Dec. 30, 1952; June 12, 1953], No. 20262/53. Class 145 [Also in Group VIII] A fire-retarding board comprises heatinsulating incombustible material inlaid in wood in not less than two layers or zones such that in each layer or zone bodies of wood are enclosed by the said material and. the bodies of wood in one layer are displaced in relation to those in another layer. As shown in Fig. 3, the board may consist of an intermediate layer 12 of wood and two outer wooden layers 10 and 14. The inner surface of layer 10 adjacent the layer 12 is provided with square projections 16 which are mutually interspaced in a regular pattern. Similar projections 18 are formed on layer 14 in such manner that the projections 16 are evenly distributed between the projections 18 when the layers are placed with the inner surfaces together. The layers 10 and 14 may be grooved sheets of wood or flat plane-parallel sheets with wooden blocks glued thereon to constitute the projections. Heat-insulating layers (e.g. asbestos sheets or mica), 20 of thickness equal to the height of the projections 16, 18 and in which apertures are punched to correspond to the projections 16 and 18 are glued to the inner faces of layers 10 and 14 and the assembly of layers 10, 20, layer 12' and layers 20, 14 glued together If desired a pulp of asbestos fibres in water-glass can be spread over the layers 10 and 14 to the exact height of the projections. Desirably the direction of the grain in layer 12 is at an angle, say 90 degrees, to that in layers 10 and 14. Thin facing sheets 22 may also be glued to the outer surfaces. The board may be constructed as in Fig. 5 with outer layers 24 and 26 assembled from planks formed with wide shallow grooves 28 and 30 into which strips of asbestos sheeting 32 and 34 are inserted. An intermediate wooden layer 40 and facing layers 42 and 44 complete the assembly. The modification shown in Fig. 7 comprises a number of abutting wooden slats 48 glued together side edge to side edge. These side edges are formed with grooves of different depths 50 and 52, Fig. 8, so that on assembly shallow grooves 50, 56 register with deep grooves 54 and 52 in the next slat. The heatinsulating non-combustible material 62 is inserted in the passage so formed.
Patent GB-265077-A (GB)
Title: Improvement in plant for washing coal and other minerals by means of liquid streams
IPC: B03B5/62
Filed: 1926-08-17
Abstract: 265,077. France, A. Aug. 17, 1926. Inclined-trough wet-separating and washing apparatus. -In a coal &c. washing plant, each launder is divided by one or more longitudinal partitions v which, or the sections of which, are adjustable in height, and which render uniform the speed of the products at all parts of the width of the launder. As shown, the partition v consists of a plate set between guide plates p,. and having a series of holes t through which pins h are passed.
Patent GB-647684-A (GB)
Title: Improvements in carding engines
Inventor: CLAPPERTON GEORGE
IPC: D01G15/20
Filed: 1948-07-31
Abstract: 647,684. Carding-engines. NUCLOTEX, Ltd. July 31, 1948, No. 20407. [Class 120(i)] A flat carding-engine has a secondary taker-in-roller E covered with wire clothing arranged below the usual primary taker-in roller C, roller E rotating in the same direction as, being smaller in diameter than, and having a greater peripheral speed than roller C and being so disposed in relation thereto and to the card cylinder A that it removes all or the greater part of the fibres from roller C and delivers them to cylinder A. As shown, the wire clothing of roller E is finer than that of roller C, and roller E is adjustable relative to roller C and cylinder A. Mote knives C', e<1>, and casings C<1>, E' carrying transverse grid bars C<2>, e<2> are associated with rollers C and E respectively.
Patent GB-887896-A (GB)
Title: A stirring, beating and mixing machine
IPC: A21C1/06
Filed: 1959-06-15
Abstract: 887,896. Dividing dough by extrusion. RINDERLE, K. June 15, 1959 [July 18, 1958], No. 20419/59. Class 87(2). [Also in Group II] A dough mixer, (see Group II) is discharged by air pressure into a dividing, piping and sloping device 27, Fig. 5, comprising a container with lateral admission and having interchangeable nozzle 30 of any number and shape which are controlled by valves 31 actuated by an electromagnet or compressed air cylinder 32 ; the valves may each be held completely or partially closed or open and are adjustable by screws 33. A restrictor plate 34 may be fitted to enable a liquid mix to be metered. In a modification, Fig. 8, a diaphragm 40 is fitted above the inlet 39 and enables the extrusion pressure to be supplied or increased by admission of a pressure fluid to the chamber 41.
Patent GB-656550-A (GB)
Title: Improvements in a process of producing sweetened condensed milk
IPC: A23C1/12
Filed: 1947-07-29
Abstract: In the production of sweetened condensed milk, the milk is subjected to a temperature above 265 DEG F for a short time insufficient for discolouration after the milk or the production of a heat flavour therein before the sweetening and concentrating are undertaken.  An example is concerned with continuous production of sweetened condensed milk having 8.6 per cent of fat, 20.0 per cent of milk solids-not-fat, 45.7 per cent of sugar and 25.7 per cent of water by the vacuum evaporation of a mixture of milk enriched with added cream and a 65 per cent sugar syrup pasteurized at 190 DEG F, the milk being heated at 200 DEG F by flow through a tubular heater, then to 300 DEG F by direct injection of steam, and, after 10 seconds, mixed at the evaporator inlet with the sugar syrup.  Specification 640,897 is referred to.  Reference has been directed by the Comptroller to Specification 8780/44, as open to inspection under Sect. 91.
Patent GB-1217066-A (GB)
Title: Coin detecting system
IPC: G07D5/08
Filed: 1968-04-30
Abstract: 1,217,066. Coin detection. TATEISI ELECTRONICS CO. 30 April, 1968 [12 May, 1967], No. 20480/68. Heading G4V. A coin detection system comprising a coin detection switch 2, a vending solenoid actuated from the switch 2 and means to remove the input signal from the vending solenoid when switch 2 produces a signal for more than a predetermined time. On insertion of a coin, proximity switch 2, Fig. 1, passes a signal through differentiating circuit 3 to set flip-flop 6, causing it to actuate vending solenoid 4 and timing device 7, which resets the flip-flop after a period of time. A second timer 8 is set by the signal from switch 2 and this sets off a buzzer if the signal continues for more than a predetermined time. Differentiating circuit 3 can be replaced by an INHIBIT element receiving an inhibit input from the timer (8), Fig. 3 (not shown), or by two NOT circuits 11, 12, Fig. 5, together with an AND element between the flip-flop 6 and the solenoid 4, receiving its second input signal from the output of the first NOT element. Alternatively, the differentiating circuit can be eliminated and an INHIBIT element placed between the flip-flop and the solenoid, receiving its inhibit input from the switch (2), Fig. 6 (not shown). Fig. 2 shows an embodiment designed to be actuated by a plurality of coins, the output from differential circuit 3 being applied to a counter 16 activating the vend solenoid at a predetermined number of pulses. A modification is to replace the differentiating circuit with an INHIBIT element receiving its inhibit signal from the timer 8.
Patent GB-1133577-A (GB)
Title: Photographic processing
Inventor: COLE DAVID HAROLD
Filed: 1966-05-10
Abstract: 1,133,577. Permanizing latensified photographic print-out papers. ILFORD Ltd. May 9, 1967 [May 10,1966], No.20578/66. Heading G2C. Latensified photographic print-out papers are permanized by treatment with a solution containing a silver halide solvent which is a thiocyanate, an alkaline substance, iso-ascorbic acid or L-ascorbic acid and as an anti-sludging agent, a compound of the formula:- and X are hydrogen, halogen, alkoxyl, amino, alkylamino, carboalkoxyl, thiol, alkyl, substituted or unsubstituted carbocyclic,or heterocyclic nuclei or carboxyl, hydroxyl or sulphonic acid groups, there being at least one carboxyl, hydroxyl or sulphonic acid group present in the compound, and l, m and n are each 0,1, or 2. Specified compounds are L-cysteine, thiomalic acid, o-mercaptobenzoic acid, thioglycollic acid, #-phenyl-α-mercaptobenzylic acid or #-furyl-α-mercaptoacrylic acid. The silver halide solvent specified is potassium thiocyanate and alkali specified is sodium carbonate or sodium hydroxide.
Patent GB-627254-A (GB)
Title: Improvements in photographic colour printing processes
IPC: G03C7/46
Filed: 1946-07-10
Abstract: 627,254. Colour photography. SOC. NOUVELLE PATHE CINEMA, and BERTRAND, J. P. July 10, 1946, No. 20638. Convention date, Aug. 9, 1945. Drawings to Specification. [Class 98 (ii)] A black and white image formed in a gelatinosilver halide emulsion layer of an ordinary positive film is transformed, by direct toning or through steps involving an intermediate bleaching of the image, into a colour component image, and one or more further colour component images are added by re-sensitizing the same gelatin layer, or an additional gelatin layer coated over the first one, by suitable diazosulphonates and naphthols, and then exposing behind colour component negatives. The first black image may be toned in blue, and then red and yellow images added by the diazosulphonate-naphthol process. Specification 611,134 is referred to.
Patent GB-419552-A (GB)
Title: Improvements in lenses for photographic and like purposes
IPC: G02B9/34
Filed: 1933-07-22
Abstract: 419,552. Lenses. LEE, H. W., and KAPELLA, Ltd., 104, Stoughton Street, Leicester. July 22, 1933, Nos. 20676/33 and 20170/34. [Class 97 (i).] In a photographic &c. lens system comprising a dispersive member between two collective members, the dispersive member is of compound meniscus form and the collective member on the convex side of the dispersive member consists of a number of meniscus collective components with their concave surfaces turned towards the dispersive member. The dispersive member comprises a double convex element of relatively high refractive index in contact with, or close to, a double concave element of higher refractive index, and the ratio of the power of its outer convex surface to that of the system is not substantially less than the ratio of the focal length to the diameter of the entrance pupil. The convex surfaces of the meniscus components of the collective member on the convex side of the dispersive member are of successively greater radius, in order counting from the dispersive member, and also the ratio of the powers of any two of these components does not exceed the value two. The member on the concave side of the dispersive member may be a single collective component as shown, or a number of such components, or a single collective element outside a dispersive component. The system has a large aperture, of the order of f /1, and is corrected for axial and oblique aberrations and field. Data for three examples are given.
Patent GB-1448767-A (GB)
Title: Fluid flow detector switch
IPC: H01H35/40
Filed: 1974-05-10
Abstract: 1448767 Fluid-flow actuated switches NOTIFIERCO 10 May 1974 [11 May 1973] 20797/74 Heading H1N An electric switch device for detecting fluid flow in a conduit 14, Fig. 1, comprises a housing 12 sealed to the conduit and containing an arm 44 carrying a vane 46 extending transversely of the flow and pivoted on knife edge 56 engaging a backing plate 30 for a flexible seal 28. An extension shaft 38 attached to the arm 44 extends through the flexible seal 28 for engagement with a switch (50), Fig. 2 (not shown), and the seal 28 is cut away at 58 in the region of the knife edges 56 to permit engagement with the plate 30 while acting to support the vane assembly against rotation on the shaft axis. The vane 46 is coupled to the plate 44 through a torsion coil spring 48 which permits the vane 46 to be deflected to a position parallel with the direction of fluid flow while the shaft 38 pivots only sufficiently to operate the switch (50).
Patent GB-245183-A (GB)
Title: Improvements in telegraphic and telephonic receiving circuits
IPC: H04B1/12
Filed: 1924-09-03
Abstract: 245,183. Carpmael, A., and Ransford, A. J.. (Representatives of Ransford, R. B.), (Chandler, C. K.). Sept. 3, 1924. Drawings to Specification. Eliminating effects of disturbing currents. - Interference is eliminated in line telegraphy by connecting the line to one diagonal of a generalized Wheatstone bridge, the second diagonal containing the receiver shunted by an oscillatory circuit tuned to the signal. The line circuit is so detuned and the bridge impedances are so adjusted that natural oscillations and very low frequency disturbances produce relatively small potential differences across the second diagonal of the bridge. The system is described as applied to high frequency signalling in which the receiving line circuit is detuned and as applied to line telephony in which the circuit is tuned to a frequency outside the normal audible range. A variable resistance may be provided in the line to damp natural oscillations, or alternatively resistances may be included in the arms of the bridge. The bridge may consist of inductances, some of which may be shunted or replaced by variable condensers. A reversing switch may be provided to reverse the connections of the tuned receiving circuit. The oscillatorry circuit in shunt to the receiver may be a tuned rejector or acceptor cir. cuit.
Patent GB-748547-A (GB)
Title: An improved harvester for groundnuts and the like
Inventor: HAWKINS JOHN CLEMENT
IPC: A01D29/00
Filed: 1952-08-20
Abstract: 748,547. Harvesting groundnuts. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Aug. 20, 1953 [Aug. 20, 1952; Feb. 19, 1953], Nos. 20885/52 and 4656/53. Class 6 (3). A harvester for groundnuts, oilseed and like fruit-bearing crops comprises a wheeled carriage 1 supporting a share 13 followed by a pair of contacting endless belts 18 which carry the plants upwardly and grip them while the fruit is stripped off by a pair of co-operating rotary vaned stripping members 36, the stripped fruit being then carried by a pneumatic conveyer 7 to bagging shoots 9 at the rear of the machine. The belts are carried by inclined beams 24 which rest upon skids 14 at their lower ends and are rearwardly pivoted to the frame 1 so as to be adjustable by a lever 53. The share 13 is carried by a pivoted frame 68 which incorporates a safety release 70, 72 permitting the share to swing back on encountering excessive resistance. The frame 68 is raisable by a lever 54. The vanes of the stripping members are non-radial 'and may be resiliently deformable, and the members rotate on mutually inclined axes 37, the drive to the strippers, the belts 18 and the pneumatic-conveyer blower 45 being obtained from the tractor through a jointed shaft 12 and belt-drives 32 from a layshaft 33. For cleaning the crop, spring fingers 51 project across the path of the plants as they are carried upwardly by the belts 18, the final pair of fingers acting to guide the crop into the space between the stripping members. Only one member 36 need be driven positively. The machine is steered by a handwheel 78 which rotates the offset draw-bar 11 about its pivot on the frame 1. The pneumatic conveyer comprises arched trunking 7 which discharges into a box 8 having a flap valve 10 directing the crop alternatively to bagging shoots 9, the trunking including a gridded portion 50 which permits the escape of trash and air.
Patent GB-981428-A (GB)
Title: A magnetic force control system
IPC: H01F7/08
Filed: 1961-06-09
Abstract: 981,428. Magnetic fastenings; remotely operated fastenings. SOC. DE VENTE D'ARMANTS ALLEVARD-UGINE. June 9, 1961 [Sept. 12, 1960], No. 21009/61. Heading E2A. [Also in Divisions H1 and H2] An arrangement for diverting the magnetic flux of a magnet through one or other of two or more magnetic circuit paths comprises auxiliary magnet means included in at least one of said paths, and generating a controllable auxiliary magnetomotive force to produce a control flux through said one path which controls the distribution of the flux produced by the main magnet as between said magnetic circuit paths. Permanent magnet 1, Fig. 1 is provided with two magnetic circuit paths 2, 3, 4 and 2<SP>1</SP>, 3<SP>1</SP>, 4<SP>1</SP> respectively, part of the former path being surrounded by an electromagnet winding 5. If winding 5 is momentarily energized in such a magnitude and sense as to aid the magnetic flux passing through it from the magnet 1 and cancel out the flux in the path 2<SP>1</SP>, 3<SP>1</SP>, 4<SP>1</SP> then upon cessation of the energization the flux from magnet 1 will continue to flow through the path 2, 3, 4 rather than the path 2<SP>1</SP>, 3<SP>1</SP>, 4<SP>1</SP>. If, on the other hand, winding 5 is momentarily energized, so that the flux in path 2, 3, 4 is cancelled out and that in path 2<SP>1</SP>, 3<SP>1</SP>, 4<SP>1</SP> increased, then upon cessation of the energization the flux from magnet 1 will continue to flow through path 2<SP>1</SP>, 3<SP>1</SP>, 4<SP>1</SP> rather than the path 2, 3, 4. Magnet 1 may be an electromagnet, while the circuit element 3 may alternatively comprise a permanent magnet, the flux switching being performed by its movement in or out of circuit or by the removal of its magnetism by heating. The arrangement may be applied to a magnetic latching arrangement in which the movement of latch member 3, Fig. 3, is controlled by momentary currents passed through windings 5 on the limbs 2, 4. The latch member 3 is permanently biased to the open position by means of a weak spring 6. The arrangement may also be applied to a magnetic work table (see Divisions H1 and H2).
Patent GB-604278-A (GB)
Title: Improvements in or relating to the catalytic alkylation of isoparaffins and olefins
IPC: C07C2/60
Filed: 1944-10-27
Abstract: Isoparaffins are alkylated with olefins using as catalyst a solution, saturated at about room temperature, of aluminium chloride in a complex of aluminium chloride and the alkylate and/or isoparaffin-olefin mixture, said solution containing no free solid aluminium chloride.  The catalyst may be prepared by refluxing aluminium chloride with, for example, isobutane and ethylene or propylene at about <PICT:0604278/IV(b)/1> 110 DEG  F. and sufficient pressure to liquefy, or with the alkylate, for example the C7-C8 fraction, followed by centrifuging or stratifying at about 70 DEG  F. to remove solid or excess chloride.  Aluminium chloride and C7-C8 alkylate are refluxed in vessel 1 and the catalyst, free from solid particles, pumped by line 5 to reactor 10.  Isobutane and ethylene are fed from lines 14, 18 and alkylate, together with the excess alkylate from vessel 1, passes by line 22 to settler 24, separated catalyst being recycled by line 60, and the alkylate being in part recycled via line 30 and in part passed to a still 40 for recovery, separated isobutane being recycled by line 42. When necessary, part or all of this isobutane traverses a pick-up aluminium chloride drum 44.  Spent catalyst is withdrawn via line 62 at a rate equal to the rate of addition of fresh. Alternatively, the catalyst may be formed in reactor 10 by reaction of the isobutane and ethylene with fresh aluminium chloride.  Preferred conditions in reactor 10 are 90-180 DEG  F. at pressures up to 400 lbs./sq. inch, contact times 20 mins. to 4 hrs., and molar ratios of paraffin: olefin of 1-10 : 1. Examples are given of the use of catalysts prepared from aluminium chloride and C7-C8 alkylate for alkylating isobutane containing 5 vol. per cent methyl chloride, with ethylene.  The alkylate is compared with that obtained using catalysts containing free solid aluminium chloride, unsaturated complex or commercial aluminium chloride.  The preferred catalyst of complex saturated with aluminium chloride has a C\sNH content of less than 39 per cent by weight. Specification 591,631 is referred to.
Patent GB-572502-A (GB)
Title: Improvements in or connected with reciprocating pumps
IPC: F04B9/04
Filed: 1939-07-21
Abstract: 572,502. Cam mechanism. BARR & STROUD, Ltd., and MACGILL, C. D. July 21, 1939, No. 21173. [Class 80 (iii)] [Also in Group XXVIII] The single-acting piston D of a reciprocating pump is actuated by continuous rotation of a shaft 1 having cam grooves formed as crossed threads, the shaft being rotated through a chain from a motor B and the grooves engaging swivelling T- headed pins 5 carried by the piston. Each right- and left-handed thread is. in duplicate.
Patent GB-482102-A (GB)
Title: Improvements in or relating to radio direction finding and course finding systems
IPC: G01S1/02
Filed: 1937-07-30
Abstract: 482,102. Directive wireless signalling. STANDARD TELEPHONES & CABLES, Ltd. July 30, 1937, No. 21187. Convention date, Oct. 1, 1936. [Class 40 (v)] In an overlapping-beam system for indicating a predetermined route, the usual continuous note which marks the correct path is deliberately broken-up or varied, so as to give a more positive or distinctive indication to the pilot. For instance the normally unbroken note XY, Fig. 3, which indicates the median line is periodically interrupted by periods a, a' either of silence or of different modulation notes. As shown in Fig. 5, for instance, a raised portion b on a cam c periodically opencircuits and so silences the modulator Mod. Alternatively a similar arrangement of control cams is used periodically to distort the normal field of one of the radiators from the shape D1, Fig. 7, to the shape D<1>1. This swings the median line from position x to x<1>, and so gives an occasional port or starboard signal even when the craft is flying straight, partly to show that the transmitter is still in action, and partly to "break up " the monotony of the usual continuous note.
Patent GB-496076-A (GB)
Title: A new or improved electric radiator
IPC: F24C7/00
Filed: 1937-07-31
Abstract: 496,076. Electric radiators. MAXFIELD, S. N. July 31, 1937, No. 21250. [Class 39 (iii)] The heating elements are enclosed in insulating tubes in hollow ribs h, Fig. 3, in a metal panel g mounted within but insulated from a hollow sheet-metal casing b, Fig. 2. The panel is formed from two plates having grooves pressed therein and secured together by rivets j. Sheet-metal lugs r secured to the corners of the panel carry insulating bushes s which engage vertical rods in the casing. The elements are connected in series by copper strips m and the first and last element are connected by strips n to terminals p mounted on mica plates q carried by the panel. The casing carries a towel-rail fitting c and is provided with openings at the top and bottom to allow air to circulate therethrough.