baber/WOPTO huggingface dataset:
Patent GB-481100-A (GB)
Title: Process for separating soluble and valuable constituents from sylvinite ores and product or products obtained thereby
IPC: C01D3/08
Filed: 1936-08-26
Abstract: To obtain potassium chloride from sylvinite ores, which consist mainly of sodium chloride and potassium chloride crystals together with small amounts of other mineral matter such as iron and manganese oxides, calcium and magnesium minerals, clays, &c., the sodium chloride and most of the other minerals are removed as a froth in a flotation process, the pulp being formed with a saturated solution of the ore, to which is added lead, bismuth, or both lead and bismuth. Any potassium chloride carried over in the froth is dissolved by heating and agitating the froth, the sodium chloride is then separated, and the liquid is mixed with the pulp from the flotation cells which contains solid potassium chloride. The mixture is cooled to crystallize the potassium chloride dissolved from the froth and sent to a dewaterer, the solid passing to a centrifuge where it may be washed with water or with saturated potassium chloride solution, and the liquid to a thickener which delivers the thickened product to the centrifuge. The potassium chloride obtained contains small amounts of oxides of iron and manganese and is of a pinkish colour. The granules are also coated with a water-repelling coating comprising lime and magnesium soaps formed by the combination of the fatty acid or soap used in the flotation with lime and magnesium salts in the ore.  The water-repellent properties, which prevent caking &c. of the chloride during transit, may be increased by adding oils, e.g. mineral oils, animal oils such as red oil or oleic acid, or vegetable oils such as cottonseed or coconut oils, before, during, or after drying the separated product.  The presence of lead and/or bismuth in the pulp is stated to prevent crystallization of potassium chloride, even if the pulp is slightly cooled, unless solid chloride is present as "seed."
Patent GB-747824-A (GB)
Title: Manufacture of organic compounds containing halogen and phosphorus
IPC: C07F9/44
Filed: 1952-09-18
Abstract: The invention comprises compounds of formula <FORM:0747824/IV(a)/1> where R1 and R2 are alkyl or halogen-alkyl groups, X and Y are -NH-, >NR2 or >NR1, R1 and R2 being as above, Z is O or S, R4 is H, halogen or as R1, R5 is H, an alkyl or halogen-alkyl group, an aryl residue or -OR1, SR1, NH2, -NHR1 or -NR1R1, R1 being as above.  These compounds may be made by reacting a compound of formula <FORM:0747824/IV(a)/2> where R1, R2, X, Y and Z are as above and R3 is as R1, with a compound of formula <FORM:0747824/IV(a)/3> where R4 and R5 are as above to split out a compound of formula Hal-R3. Representative of values specified for R1, R2 and R3 are methyl, isopropyl, 2-butyl-octyl, octadecyl and 2-chlorethyl groups. Representative of specified carbonyl compounds used as startingmaterial are dichloracetaldehyde, bromal, chloral, 1,1-dichlor-, 1,1,3-trichlor-, 1,1,3,3-tetrachlor-, pentachlor- and hexachlor-acetone, o -trichlor-, 4-chloro-o -trichlor- and 4-methyl-o -trichlor-acetophenone, ethyl trichloracetate and trichlorthioacetate and trichloracetic acid dimethylamide.  The reactants react in equimolecular proportions irrespective of the quantities present. Inert solvents, e.g. benzene and dioxane may be present. Advantageously the reaction is finished by heating to 50-120 DEG  C. The compounds are penticides.  In examples: (1) chloral is reacted with [(C2H5)2N]2 POC2H5 in benzene solution and with initial cooling to yield [(C2H5)2N]2POCCl2.CHO, it bein stated that 1,1,3,3-tetrachloracetone may be used instead of chloral and in (2) ethyl trichloracetate is added to [(C2H5)2N]2 POC2H5 in benzene solution as in (1) to yield [(C2H5)2N]2 POCCl2COOC2H5.
Patent GB-596431-A (GB)
Title: Electron discharge devices and method and means of adjusting same
IPC: H01J21/08
Filed: 1944-11-24
Abstract: 596,431. Thermionic valves. STANDARD TELEPHONES & CABLES, Ltd. Nov. 24, 1944, No. 23497. Convention date, Aug. 15, 1942. [Class 39 (i)] In an electron discharge device comprising a generally cylindrical envelope 18, 20, Fig. 4, with a control grid 16 positioned substantially centrally between its ends, either the anode 12 or the cathode, Fig. 1 (not shown), or both are supported on a reentrant and longitudinally extensible base 24 attached to the end of the envelope, and the base 24 is constructed of material of small elasticity, e.g. copper, so as to retain its configuration after it has been extended to vary, the capacity between the corresponding electrodes 12, 16. The base 24 may be corrugated, as shown, or formed as a hollow bowed-out cylinder, Fig. 1 (not shown), and is provided at its lower end with a collar 26 which may be integral therewith. It is stretched by means of a removable tool inserted therein, comprising a cup-shaped plunger 36 mounted on a threaded rod 34 which co-operates with an internally threaded sleeve 32; by turning nut 48, dogs 44 formed on the ends of fingers 42 are caused to move radially outward over the conical surface 49 and engage the collar 26, as shown. The handle 39 is then rotated to stretch the base 24 by the desired amount as indicated by the capacity-measuring device 55. The tool is then removed. The position of the cathode relative to the grid 16 may be adjusted in a similar manner; the extensible bases supporting the cathode and anode 12 may be formed alike or differently.
Patent GB-1467848-A (GB)
Title: Electrophotographic image reproduction
IPC: G03G13/01
Filed: 1974-05-29
Abstract: 1467848 Assisting sheet separation XEROX CORP 29 May 1974 [6 June 1973] 23749/74 Heading B8R [Also in Division B6] A latent electrostatic image is developed and transferred to a sheet 34 having a non-fibrous portion 78 attached to a fibrous portion 76 which facilitates separation and feeding of the sheet from a stack. The portions are adhered at an overlap region 102 and the fibrous portion, which is of paper, has a serrated line of weakening 100. The non-fibrous portion is a transparent film of polysulphone, polyethylene, phenylene or polycarbonate resin. Multicolour images may be produced on the portion 78. Sheets are separated sequentially from the top of a stack held on a tray by rollers which contact the fibrous portion first, and are fed to grippers on a transfer drum.
Patent GB-317232-A (GB)
Title: Rotary valve
IPC: F16K3/08
Filed: 1928-08-17
Abstract: 317,232. Smolensky, M. Aug. 17, 1928. Rotary disc-valves.-A rotary disc-valve of the kind actuated by a radially arranged spindle has the valve disc provided with teeth in mesh with a pinion having a loose non-rotatable connection with the inner end of the actuating-spindle. The valve disc has sector-shaped ports 27 and a strengthening-rib 29, and co-operates with a seat having similarly shaped ports 28. Both valve member and seat have machined surfaces which cover each other in both the open and closed positions, and the valve member has cam surfaces 30 adapted to engage corresponding surfaces on a spring-pressed sliding ring 31 to press the valve to its seat. The actuating-spindle 10 has a sealing collar 11 held against a seat 12 by a spring 13 housed in a recess 14 in the detachable bonnet 5. A three-toothed pinion engaging teeth 26 on the valve disc has a pivot 22 held in a half bearing 23 by a rib 24 in the valve-disc and has a squared tang 19 engaging a socket 18 in the valve-spindle. The tang while engaging the bottom of the socket has a small amount of lateral play.
Patent GB-663142-A (GB)
Title: Method for the consolidation and/or the stabilisation of soils
IPC: E02D3/10
Filed: 1949-09-16
Abstract: 663,142. Soil hardening; pile driving. KJELLMAN, W. Sept. 16, 1949. No. 23906/49. Classes 68 (i) and 68 (ii). Soil is compressed or stabilised by placing over the surface to be treated an airtight membrane 4, the edges of which are tightly secured down to the soil, and applying suction to the soil beneath the membrane to remove air and water in the system of pores and interstices in the soil which is now separated from the atmosphere. The excess pressure over that within the soil compacts the soil. The membrane may be a layer of asphalt, or rolls of air-tight material which are laid in overlapping relation, the joint seams being rendered airtight, or, when the surface is below water, a deposited suspension of clay. A horizontal filter 8 may be laid between the membrane and the ground to be treated and vertically disposed drain pipes may lead into it. The edges of the membrane may be laid in a trench and sealed by a layer of water filling the trench, the water being that which is drained from the soil being treated. When piles do not reach to a solid bottom, the soil in the vicinity of each pile may be stabilised by applying this method locally.
Patent GB-815208-A (GB)
Title: Improvements in or relating to the manufacture of transistors and other semi-conductor devices
IPC: H01L21/288
Filed: 1957-07-29
Abstract: 815,208. Joining leads to semi-conductor devices by electrolysis. TELEFUNKEN G.m.b.H. July 29, 1957 [Aug. 27, 1956], No. 23936/57. Classes 37 and 41. A lead is attached to a transistor or other semi-conductor body by mounting the lead with its end facing and adjacent the surface of the body in a metal containing electrolyte cathodically depositing metal on said surface opposite said lead serving as anode until the deposit bridges the gap between the body and the lead, and then cathodically depositing more metal on said bridging deposit with the help of an auxiliary electrode as anode. Preferably the end of the lead facing the body is pointed and the auxiliary electrode is a ring concentric. with the lead. The semi-conductor body may be coated with an insulating laquer except where the metal is to be deposited and immersed in the electrolyte or may be arranged as shown so that only one face of the body 3 contacts the electrolyte 2. The cavity in the body may be formed initially by drilling and finally shaped by electrolytic etching using a non-plating electrolyte, the extent of the etching being limited by the potential barrier 10 set up by the back-bias applied to the contact 9 on the back of the semi-conductor body, which back-bias also effects metal deposition if a plating metal salt is then added to the electrolyte.
Patent GB-909522-A (GB)
Title: Improvements in or relating to semiconductor devices
Inventor: DRAKE CYRIL FRANCIS
IPC: H01L29/00
Filed: 1960-07-08
Abstract: 909,522. Semi-conductor devices. STANDARD TELEPHONES & CABLES Ltd. July 7, 1961 [July 8, 1960], No. 23951/60. Class 37. A semi-conductor device comprises a tunnel junction having terminal means defining a first path across the junction and a second control path lying at least in part parallel to the junction. Variation of current in the control path varies the bias on the first path, thereby changing ghe current therein by moving the region of negative resistance. In one embodiment, Fig. 1, the current across the junction between terminals 3 and 4 is varied by varying the current between terminals 4 and 5, thereby varying the bias along the junction. In a second embodiment, Fig. 2, bias current is applied between two separated terminals 9 and varied to bring the negative resistance part of the junction between layers 6 and 7 opposite a selected intermediate terminal 9. Current then flows to this terminal from the central conductor 8. In a further embodiment, Fig. 3, the two currents are effectively isolated by applying the control currents via N-type material, so that no current flows across one of the junctions to the P-type material 12 which together with the N-type material 10 forms the tunnel junction. In a further embodiment, Fig. 4 (not shown), the controlled current is fed through a capacitive connection.
Patent GB-1291212-A (GB)
Title: Windscreen wiper arrangement having a cable loop drive
Inventor: BAUER K
IPC: B60S1/18
Filed: 1971-04-19
Abstract: 1291212 Windscreen wipers SWFSPEZIALFABRIK FUER AUTOZUBEHOER GUSTAV RAU GmbH 19 April 1971 [13 March 1970] 23979/71 Heading A4F [Also in Division F2] In a windscreen wiper system comprising a wiper shaft 30 driven by a cable 17 looped around a pulley 29 on the shaft 30 and connected at its  ends to a connecting rod 10 reciprocated by a motor (not shown), the pulley 29 carries plates 24 and 25 Fig. 2 (not shown) for guiding an end of the connecting rod 10 having a recess 11 in which the ends of the cable are secured. In a plane perpendicular to the axis of the pulley 29 the edges 16 of the rod 10 engaged by the pulley define part of an ellipse at the focal points of which are located the fixing bolts 12, 13 for the ends of the cable 17. The cable tension is thus maintained substantially constant during operation of the mechanism.
Patent GB-150680-A (GB)
Title: Improvements in devices for re-cooling the cooling water of steam-condensing plants on vehicles
IPC: B61C1/12
Filed: 1920-08-17
Abstract: 150,680. Boltshauser, H. Sept. 5, 1919, [Convention date]. Railway locomotives, steam; tenders.-Relates to apparatus mounted on a tender for cooling the water of the condensing plant of steam locomotives by direct contact with an air current due to the movement of the vehicle, and consists in arranging the distributing channels and spray pipes for the water as an arch-shaped structure forming the top and sides of the air channel. In the arrangement shown the hot water from the locomotive condenser enters the side of a supply conduit 4 extending around the inlet II of the air passage, the water conduit having a sloping side i, h forming a funnel inlet for the air. The water enters the perforated pipes 7 and falls through the air passage in streams, and is collected in a narrow reservoir 8, the air passage being thus liorse-shoe shaped in section. A rear water conduit 6 of similar shape to the front conduit 4 may also be employed. A coal bunker 5 extends partly into the air channel. The outline of the cooling structure approximates to that of the railway clearance gauge Y, Z, Figs. 2 and 3.
Patent GB-247863-A (GB)
Title: Improvements in and relating to vehicle windows
IPC: B60J1/17
Filed: 1925-09-26
Abstract: 247,863. Simpson, E. G. Sept. 26, 1925. Vehicle windows. - Closed - body vehicles having an inclined front screen are provided with an inclined doorpost or frame f having a vertical runway for a sliding window panel. The runway, at the point where it reaches the depth of the post, is rearwardly inclined, the panel being correspondingly cut away. The runway k may be lined with felt.
Patent GB-583772-A (GB)
Title: Improvements in and relating to jigs and fixtures for machine tools
IPC: B23Q16/08
Filed: 1944-12-01
Abstract: 583,772. Drilling ; milling &c. SHELVOKE & DREWRY, Ltd., and GOSTLING, L. M. Dec. 1, 1944, No. 24071. [Class 83 (iii)] [Also in Group XXIII] In a work-supporting mechanism particularly applicable to milling, grinding, honing, polishing and like machines, a slide 1 is mounted on rollers 21, running on indexing strips 12, 13 positioned in grooves 10, 11 on a bed 3 and has linear motion so that the rollers engage notches 23 at predetermined positions of the slides. The grooves are formed between machined flat surfaces 5, 6 and 7, 8 on the upper face of the bed ; a shallow channel 9 separating these surfaces. Similar surfaces 14, 15 and 16, 17 containing grooves 18, 19 are formed on the underside of the slide ; but near each end of the grooves is a cavity housing rollers 21 supported on spindles 22. As the rollers descend into pairs of notches the slide sinks, and surfaces 14, 15, 16, 17, on the slide come to rest on corresponding surfaces 5, 6, 7, 8 on the bed. Additional rollers 26 supported on spindles 27 project down from the slide and run on tracks 28, 29 on the inside of the bed serving to hold the slide against lateral movement. A lever frame 30 pivoted on trunnions 31 has arms 32 which react against studs 33 providing sufficient leverage to displace the rollers and allow the slide to move on to the next position. The trunnions are engaged in slots in the arms to allow the arms to be moved to either side of the studs. When not in use the arms rest against stops 35. The studs 33 are located on the sides of the bed at points corresponding to the spacing of the notches. Spring index plungers 36 may be employed to engage openings 37 in the bed. These plungers are raised against their springs and turned to engage a catch to hold them up when it is desired to shift the slide. Various workclamping members 38 may be employed and a stop 39 prevents the rollers from running off the index strip.
Patent GB-1021529-A (GB)
Title: Diazaspiroalkanes
IPC: C07D471/10
Filed: 1964-06-10
Abstract: Diazaspiroalkanes in which each ring contains 4-6 carbon atoms and one hydrocarbyl-substituted nitrogen atom which is adjacent the spiro carbon atom, and having CH2 in both rings adjacent the spiro carbon atom, e.g. those of formula <FORM:1021529/C3/1> where R is hydrocarbon, R1 is hydrogen or hydrocarbon, and n is 2-4 (see Division C2), are useful as difunctional catalytic epoxy curing agents.ALSO:The invention comprises diazaspiroalkanes wherein each ring is heterocyclic of 4-6 carbon atoms and one hydrocarbyl-substituted nitrogen atom, each nitrogen being attached directly to the spiro carbon atom, and each ring having CH2 adjacent the spiro carbon atom; e.g. those of formula <FORM:1021529/C2/1> where R is hydrocarbon, R1 is hydrogen or hydrocarbon, and n is 2-4, which are obtained by reacting at at least 50 DEG  C. a compound of formula <FORM:1021529/C2/2> with aqueous non-oxidizing acid of a specified minimum concentration and strength.  The starting materials are prepared by condensation of appropriate lactams.  N-oxides of the compounds of the invention are referred to.  When catalytically hydrogenolysed, the compounds of the invention undergo ring opening to give compounds of formula <FORM:1021529/C2/3> or <FORM:1021529/C2/4>
Patent GB-376074-A (GB)
Title: Improvements in and relating to garments for sports and bathing purposes
IPC: A41D7/00
Filed: 1931-08-28
Abstract: 376,074. Bathing-dresses. RYFF & CO., AKT.-GES., 3, Sandrainstrasse, Berne, Switzerland. Aug. 28, 1931, No. 24220. Convention date, July 23. [Class 77.] A bathing or sports costume comprises a lower part 1 in the form of a pair of drawers which extends upwards only to the hips of the wearer, and an upper part 4 in the form of a brassiÞre which is connected with the lower part by two narrow strips or bands 2, 3, one at the front, the other at the back. The upper part comprises two flaps 4 which are sewn to the front strip 2, and detachably fastened to the back strip 3 by buttons, press studs, or otherwise. Shoulder straps 5 are sewn to the flaps 4 and rear strip 3.
Patent GB-1184294-A (GB)
Title: Method of an Apparatus for Marking Potatoes or the like
Inventor: KALMAR ARTHUR FREDERICK
IPC: B41F17/34
Filed: 1968-05-21
Abstract: 1,184,294. Printing apparatus. F.M.C. CORP. 21 May, 1968 [13 June, 1967], No. 24221/68. Heading B6C. Fruit or vegetable P, which may be a potato, is marked by needles 97, which penetrate its surface and leave punctures in it on withdrawal. The needles 97 may be mounted on a plurality of plates 95, carried in a flexible backing 90, so that they adjust to the irregular surface marked. Preferably the needles 97 are ink-tipped, so that ink marks are made in the punctures. Potatoes may be aligned on a conveyor and individually marked by arrays of needles 97 mounted on backings 90 arranged around the periphery of a wheel, rotated in step with the movement of the conveyor. Ink is applied to the needles 97 by a drip-fed train of two inking rollers and potato skin is cleaned from them by rotary brushes, rotated at a cyclically varied speed.
Patent GB-353279-A (GB)
Title: A heat-operated motor
IPC: F02G1/02
Filed: 1930-08-14
Abstract: 353,279. Utilizing solar heat. HOLMES, A. H. and HOLMES, A. C., 42, Frobisher Road, Hornsey, London. Aug. 14, 1930, No. 24342. [Class 64 (ii).] A convection - current motor, for advertising devices, toys, or other purposes, comprises a casing, having ducts constituting a circulatory path for any fluid, such as air, which is caused to flow by solar, natural or artificial heat applied to one part of the casing, and a cylinder mounted in the path of the moving fluid so as to be rotated by friction of the fluid on its surface. In the form shown in plan in Fig. 3 with the roof removed, the casing is of glass and has glass partitions, and the rotating cylinder 8 is of paper or other light material carried on a vertical spindle. When the side 2 of the casing is heated by sunlight the air between this side and the adjacent partition rises into the roof of the casing, passes over the drum and partitions, descends between the opposite wall 3 and the adjacent partition, and then circulates as shown by the arrows, rotating the drum by friction on its surface.
Patent GB-1479716-A (GB)
Title: Method of making a multilayer paper or paper board
IPC: D21H13/26
Filed: 1974-06-03
Abstract: 1479716 Multilayer paper KAMMERER GmbH 3 June 1974 [1 June 1973 26 Oct 1973] 24396/74 Heading D2B [Also in Division B8] A method of making a multi-layered paper or paperboard comprises making on one screen of a papermaking machine an outer layer containing 20-95% by wt. of an organic fibre fleece, said fibre being selected from polyester. polyolefin, polyvinyl chloride, polyamide, vinyl chloride/vinyl acetate copolymer, regenerated cellulose, cellulose acetate, and cotton fibres, and cotton linters, and 5-80% by wt. of a fibrous binder including cellulose fibres and/or polyvinyl alcohol fibres: simultaneously making on another screen of the papermaking machine, a cellulose-based carrier layer; and laying the outer layer on the carrier layer. An organic fibre fleece layer may be provided on each side of the carrier layer. The carrier layer may be sized e.g. with rosin. The organic fibre fleece layer may also be sized. The paper may be used for the packaging of articles such as video discs, the surfaces of which are susceptible to scratching.
Patent GB-822777-A (GB)
Title: Improvements in or relating to halophenothiazine derivatives
IPC: C07D417/06
Filed: 1957-08-01
Abstract: The invention comprises phenothiazines of the general formula <FORM:0822777/IV (a)/1> (wherein Alk is a lower alkylene radical, one of R and R1 is a hydrogen atom and the other is a radical of the general formula Alk1-OR11 wherein R11 is a hydrogen atom, a lower alkyl group or a (lower alkyl)-CO-group, Alk1 is a lower alkylene radical and the term "lower" implies less than six carbon atoms), together with pharmaceutically acceptable non-toxic acid addition salts and quaternary ammonium derivatives. These compounds may be prepared by (a) reacting a 10-(haloalkyl)-halophenothiazine with a compound of the general formula <FORM:0822777/IV (a)/2> or (b) by condensing a halophenothiazine with a compound of the general formula <FORM:0822777/IV (a)/3> Examples describe the preparation of N-[g -(21-chloro - 101 - phenothiazinyl) propyl] - 3 - and 4 - (hydroxymethyl) piperidines, N - [g  - (2-chloro - 10 - phenothiazinyl) propyl] - 4 - (b  - hydroxyethyl) piperidine, N - [g - (21 - chlorophenothiazinyl) propyl] - 3 - and 4 - (g  - hydroxypropyl) - piperidines, N - [b  - (21 - chlorophenothiazinyl) ethyl] - 3 - (d  - hydroxybutyl) piperidine, N - [g  - (21 - chlorophenothiazinyl) propyl] - 4 - (g  - acetoxypropyl) piperidine, N-[g  - (21 - chloro - 101 - phenothiazinyl) propyl]-4 - (a  - hydroxy - a  - methylethyl) piperidine, N - [g  - (21 - chloro - and bromo - 101 - phenothiazinyl) propyl] - 4 - (a  - hydroxyethyl) piperidines, N - [g  - (21 - chloro - 101 - phenothiazinyl) propyl] - 4 - (b  - ethoxyethyl)-piperidine and N-[g -(31- and 41-)-chlorophenothiazinyl)-propyl]-3-(g -hydroxypropyl) piperidines, together with their hydrochlorides, by method (a) above, and also the preparation of N - [g  - (21 - chlorophenothiazinyl) propyl] - 4-(g -acetoxy propyl) piperidine hydrochloride by acetylating N - [g  - (21 - chlorophenothiazinyl) propyl] - 4 - (g  - hydroxypropyl) piperidine and forming the hydrochloride.