baber/WOPTO huggingface dataset:
Patent GB-726306-A (GB)
Title: Improvements in circuit arrangements for pulse generation
Inventor: MELVILLE WILLIAM SIMM
IPC: H02M9/06
Filed: 1953-10-08
Abstract: 726,306. Changing wave shape. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 8, 1953, No. 27711/53. Addition to 666,574. Class 38 (2). In a circuit for producing pulses of electrical energy as claimed in Claim 1 of the parent Specification, which circuit comprises a ladder arrangement of saturable inductors L1, L2, L3 and capacitors C1, C2, C3, the saturable inductor L1 connected between the first two capacitors Cl, C2 is replaced by a switch S and inductor LS in series. The switch is driven synchronously with the supply alternator G, and closes periodically at supply voltage zeros when capacitor C1 is fully charged. Alternatively, in the circuit described with reference to Fig. 4 and claimed in Claim 2 of the parent Specification, which comprises a succession of capacitors and saturable inductive couplings, the first saturable inductor has connected in parallel a switch and inductor, which switch closes at voltage zeros, Fig. 2 (not shown). The inductor LS limits the current through the switch and is the equivalent of the inductor L1 of the parent Specification in the saturated state. The output pulses are unidirectional or alternating according as the switch closes at every other one, or all of the voltage zeros.
Patent GB-850765-A (GB)
Title: Induction heating coil
IPC: H05B6/36
Filed: 1958-08-29
Abstract: 850,765. Induction heating coils. GRINNELL CORPORATION. Aug. 29, 1958 [July 3, 1958], No. 27772/58. Class 39(3). [Also in Group XXXVI] An induction heating coil which can be opened and placed round, for example, the ends of two abutting pipe sections which are to be heated comprises a first set of conductor terminals, a second set of conductor terminals each set having an interior manifold cooling fluid chamber, a plurality of at least partially flexible hollow insulated conductors each joining a terminal of one set to a terminal of the other set to form a continuous helical current path and each communicating with the manifold chambers. As shown, a latching and contact mechanism 10 for releasably electrically connecting the two sets of terminals is in two halves 12 and 14. The portion 12 comprises insulated bolts 24 which hold together end blocks 15 and a plurality of mutually insulated conductor blocks 16 having male contact terminals 18 and internal cavities 31, Fig. 4 (not shown), forming a single elongated manifold chamber 32 with an inlet port 34. The portion 14 includes end blocks 19 and a plurality of conductor blocks 20 having female socket terminals 22 receiving the male contact terminals 18 and formed with cavities defining a manifold chamber 33 with an outlet 36. Convolutions 38 of the coil are formed of asbestos insulated stiff hollow copper tubes held in parallel relationship by four clamps 52 and provided at their middle portions with a short length 40 of flexible hollow conductor cable. One end of each convolution is secured to a block 16 and the other to a block 20, the connections being to alternate blocks to provide the required helical current path. The toggle latch mechanism for opening and closing the coil includes a pair of upstanding lugs 42 secured to the portion 14 and each provided with a notch 43 receiving the free end of one closed link 44 which is pivotally secured at 45 in a handle plate 46 rotatably secured to the portion 12 on one of a pair of upstanding lugs 48. The handle plates are joined by a bar 49 whereby both plates can be operated at the same time. The current path extends from the cooling fluid inlet port 34 to the outlet port 36.
Patent GB-1454942-A (GB)
Title: Production of beta-chloroethyltrichlorosilane
IPC: C07F7/20
Filed: 1974-06-21
Abstract: 1454942 Removing Lewis acids from chloroethyl trichlorsilane DOW CORNING Ltd 6 June 1975 [21 June 1974] 27774/74 Heading C3S #-Chloroethyl trichlorosilane is recovered from a mixture thereof with a Lewis acid by adding a complexing agent for the Lewis acid which is inert to the silane, then distilling off the silane. The Lewis acid may be, e.g. AlBr 3 , BF 3 , FeCl 3 , SbCl 5 , ZnCl 2  or SnCl 4 , but is usually AlCl 3 ; suitable complexing agents include triethylamine, pyridine, arylonitrile, nitromethane, nitrobenzene, diethyl ether, dioxan, diethylmethyl oxonium chloride (from ether and methyl chloride), ethyl acetate, acetyl chloride, benzoyl chloride, and Lewis bases, e.g. POCl 3 , PCl 5  and TeCl 4 , but acetone is preferred. In the example acetone is shaken with a mixture of the silane and AlCl 3 , or is added dropwise after saturating the mixture with HCl, and the silane is then distilled off.
Patent GB-519689-A (GB)
Title: Improvements in or relating to rotary filters
IPC: H01B3/22
Filed: 1938-09-24
Abstract: 519,689. Filters. KEENE, E. W. W. Sept, 24, 1938, No. 27877. [Class 46] A rotary suction filter drum is arranged so that both its inner and outer surfaces serve as filtering surfaces and scrapers are provided for removing the filter cake from each surface. As shown in Figs. 7 and 8, a drum is built up of leaves 40 on a framework comprising hoops 23, 24 and longitudinal bars 25. The drum is open-ended and is mounted in a casing 20 to dip into a tank 12 containing the liquid to be filtered. The hoop 23 is supported by arms from a shaft 15 which is provided with a distributing valve 18 and driven by a worm-wheel 17. The hoop 24 is supported and centred both within and without by rollers 27. The inner rollers assist in rotating the drum in that they are themselves driven by sprocket wheel and chain gearing from an internally toothed wheel 30 on the shaft 15. Each filter leaf has an envelope of cloth with a gauze support or a frame work comprising wooden battens 48, Fig. 15, and transverse metallic members 49. The leaves are held in position against brackets 53 bolted to the hoops 23, 24, by clamps 56 on bolts 55. Wires 63 having their ends bent to serve as clips extend between the boss 25 adjacent to both the inner and outer surfaces of the leaves and prevent undue distortion of the cloth under reverse pressure. The filtrate is discharged from each leaf through sockets fitting into recesses 52 in the brackets 53. Radial pipes 41 connect these recesses with bores in the shaft 15 and the distributing valve 18. The filter cake is removed from the leaves by scrapers 13, 14 which direct it into hoppers 19. Fig. 4 shows an arrangement in which two open-ended drums 11, 22, are arranged end-to-end on each side of a central web 10 fixed to a shaft 15 and Fig. 6 one in which two coaxial filter drums 11, 21 are attached to a web 10.
Patent GB-391471-A (GB)
Title: Improvements in or relating to elastic suspensions and vibration dampers for vehicles and cycles
IPC: B62K25/16
Filed: 1931-10-08
Abstract: 391,471. Vehicle spring suspensions. NEIMAN, A., 19, Erftstrasse, Cologne, Germany. Oct. 8, 1931, No. 27987. Convention date, Oct. 9, 1930. [Classes 108 (ii) and 108 (iii).] Spring suspension systems applicable to motor vehicles, cycles, cycle saddles, and the like employ several rubber tension springs of different lengths in combination with slidable guides and fluid friction dampers. In the application to the front fork of a motor cycle, Fig. 2, the axle r is connected to rods a sliding in tubes d forming the fork. The connections z pass through slots in the tubes. Endless rubber tension springs l of different lengths are interposed between the bar g connecting the upper ends of the rods a and the cross-bar h secured to the tubes d and come into action in succession. The lower ends of the rods a carry pistons b which work in damping cylinders with oneway valves u secured to the lower ends of the tubes d. In a motor vehicle steering suspension, Fig. 4, the swivelling axis a slides in and supports the fork m on the end of the main axle o by rubber tension members j, a fluid damper l being provided.
Patent GB-1120937-A (GB)
Title: Discharge device for a bunker having a central discharge aperture formed in the bottom of the bunker
IPC: B65G65/48
Filed: 1967-06-16
Abstract: 1,120,937. Feeding material from bunker. MASCHINENFABRIK BUCKAU R. WOLF A.G. 16 June, 1967 [5 July, 1966], No. 27989/67. Heading B8S. Material from bunker 1 is discharged through bottom aperture 4 by curved arm 10 rotated by motor 6, the discharge is caused to slope as shown towards the said aperture by cone 5 disposed over the aperture, and the sloping material is raked by scrapers 15 carried by vertical shaft 13 rotated by motor 12.
Patent GB-710630-A (GB)
Title: Improvements in or relating to feeding devices for step-by-step rolling mills
IPC: B21B21/04
Filed: 1952-11-06
Abstract: 710,630. Variable-speed gear. MANNESMANN AKT.-GES. Nov. 6, 1952 [Nov. 12, 1951], No. 28013/52. Class 80 (2 [Also in Group XXII] A variable speed gear for a feeding device for step-by-step rolling mills wherein the feeding is effected by a motor through gearing (see Group XXII) comprises an epicyclic gear interposed between the motor and said gearing the carrier of the planet gears of said epicyclic gear being controlled by motor via an infinitely variable and reversible regulating gear. In an embodiment a slide 3 carrying a feed device 4 is mounted in guides 1 and 2 and carries a double rack 5 which meshes with two driving pinions 6a and 6b. The pinions are peripherally displaced relative to each other on a shaft 7 so that reversal of movement takes place without lost motion and without jarring of the teeth of the rack and pinions. The shaft 7 is driven through an epicyclic gearing 10 by an electric motor 9 and the crown wheel of the epicyclic gearing meshes with a gear wheel 13 driven by an electric motor 15 through a regulating gear 16. By varying the speed and direction of the rotation of the crown wheel by means of the regulating gear the feeding speed and direction can be accurately controlled. The speed of the driving motor 9 of the feeding device is in phase with the drive of the step-by-step rolls.
Patent GB-317664-A (GB)
Title: Improvements in or relating to hot plates for baking and the like
IPC: A21B1/14
Filed: 1928-10-01
Abstract: 317,664. Jamieson, J. S. Oct. 1, 1928. Hot-plates. - A bakers' hot-plate, heated by closed circulating steam tubes, is characterized by the " flow " portions A of the tubes alone being positioned immediately beneath the hotplate B, whilst the " return portions C are in a lower plane and lead directly to the combustion chamber. The number of " flow " portions in contact with the plate B is thus twice the number of " flow " portions in contact with the plate in the usual construction in which the " return " portions are also in contact with the plate. The number of.heating portions E, in the furnace, is also doubled. The portions A may be horizontal or may slope slightly from front to rear.
Patent GB-1465150-A (GB)
Title: Barbecue cooker
IPC: F24C3/14
Filed: 1974-06-26
Abstract: 1465150 Barbecue cookers WARTSILA AB OY 26 June 1974 [27 June 1973] 28248/74 Heading A4D A barbecue cooker comprises a bowl 1, a cooking grill 9 mounted or mountable within the bowl, an opening 5 in the bottom of the bowl allowing entrance of heat from a flame, a cover 6 above the opening and below the grill, and a removable lid 11  for closing the bowl above the grill, the lid being provided with at least one opening 12. Cover 6 overlaps the edge of the opening 5 and is carried by supports 7 leaving large free openings 8 at the sides of cover 6. The bowl bottom is at least substantially flat so the barbecue may be placed on and heated by a gas or liquid burning stove 4. Detachably attached to grill 9 is a tray 10 for collecting drips from the food, which is made of thin aluminium and is replaced by a new one after use. The tray can alternatively rest directly on cover 6 and then contains smoke-producing material for the smoking of food on grill 9. At least some parts of the barbecue are of enamelled metal, cover 6 and the edges of opening 5 being of specially heat resistant enamel and the inner surface of the bowl being of self-cleaning enamel. In the embodiment of Fig. 2 (not shown) the cooker includes a detachable holder (14) for a heating unit (15).
Patent GB-225559-A (GB)
Title: Improvements relating to the treatment of artificial threads
IPC: D01D10/04
Filed: 1924-11-26
Abstract: 225,559. Akt.-Ges. f³r Anilin-Fabrikation. Nov. 30, 1923, [Convention date]. Treating substances with liquids. - Artificial silk &c. wound on bobbins is washed centrifugally by supplying washing liquid to the interior of the bobbin on which the silk is wound. As shown, the bobbin b on which the silk is wound, is perforated and is closed at one end and provided at the other with a coned socket to fit the spindle a; the latter is mounted vertically in a trough d, is rapidly rotated, and is perforated with holes or slots a<1> for the passage of liquid supplied through a pipe a<2>.
Patent GB-1115388-A (GB)
Title: Bunsen burner
IPC: F23D14/04
Filed: 1965-07-05
Abstract: 1,115,388. Bunsen burner. F. A. VAN DE ROER. 5 July, 1965, No. 28401/65. Heading F4T. A Bunsen burner comprises a gas supply nozzle 3 screwed into a nozzle 1, the latter being formed with primary air apertures 4 and supporting a mixer pipe 5, the exit aperture 10 of this pipe projecting into a burner header 6 having slot-like gas exit apertures 7, 8 and 9 bounded by flat parallel surfaces. A baffle 11 is provided above the mixer pipe aperture 10 which deflects the gas-air mixture evenly to all parts of the slots, and is supported by pin-shaped ends 14 and 15 which are welded into the intersections of the slots.
Patent GB-238755-A (GB)
Title: Improvements in or relating to the structure or framing of internal combustion engines
IPC: F02F7/00
Filed: 1924-11-27
Abstract: 238,755. Vickers, Ltd., and Rabbidge, W. F. Vov. 27,1924. Frames; cylinders, mounting. - The framing to receive the cylinders is built up of approximately vertical columns A half arched at the top where the adjacent cnlumns abut and bolted together, the joint a<1> being at the centre of each cylinder and transverse to the crank-shaft. The columns rest on an independent bed-plate D and span the main bearings. The columns may also be divided longitudinally as at a<3>, Fig. 3. Cross girders E form supports for a tieplace receiving the lower ends of the cylinders. The cylinder covers C may be directlv bolt-ed to the entablature formed by the tops of the columns or a sandwich plate c may be interposed. Tie bars may be used passing from the top of the entablature through the columns to the bed-plate; the columns may be of H or box section. For small engines two or more columns may be cast in one group the adjacent columns of the groups being connected together as described above.
Patent GB-1022864-A (GB)
Title: Process for the preparation of dimers of acrolein or acrolein derivatives
IPC: C07D309/26
Filed: 1963-07-18
Abstract: Acrolein or a derivative wherein C1- 6 hydrocarbon groups replace one or more hydrogen atoms is dimerized by heating to 100-300 DEG  C. in the presence of an acid having an ionization constant of 10-4 to 10-2 at 17-25 DEG  C., e.g. arsenic, tellurous, and selenious acids and, preferably, organic acids, many of which are specified and include aliphatic and aromatic mono- and poly-carboxylic acids, hydroxy-, methoxy-, thio-, cyano- and halo-acids, sulphonic acids, and barbituric. Preferred acids are hydroxy-polycarboxylic having 4-12 C atoms, 2-6 COOH, and 1-3 OH groups, especially tartaric and citric, used in amounts of 0.001 to 0.1%.  Formation of polymers is inhibited even with reagents containing appreciable amounts of alcohols and water.  Temperatures of 100-200 DEG  C. are preferred.
Patent GB-540404-A (GB)
Title: Improvements in or relating to composite articles and component parts therefor
IPC: C09J161/00
Filed: 1939-10-23
Abstract: 540,404. Synthetic resins compound sheet materials; moulding synthetic resins. BRUYNE, N. A. DE. RAYNER, C. A. A., AERO RESEARCH, Ltd., and DE HAVILLAND AIRCRAFT CO., Ltd. Oct. 23, 1939, No. 28497. [Class 2 (iii)] [Also in Groups V and VIII] Component parts of fully-cured synthetic resin materials, e.g. phenol-formaldehyde, cresol-formaldehyde, urea-formaldehyde, melamine-formaldehyde or mixtures thereof, are united to one another or to component parts of cellulosic material such as wood, fibreboard, cardboard and cork, by coating the resin material, before curing, with an aromatic amineformaldehyde condensation product, preferably aniline-formaldehyde, fully curing by the application of heat and cementing the component parts by means of uncured phenolformaldehyde followed by the application of heat and pressure, e.g. a temperature of 130- 160‹C. and a pressure of 200 lbs. sq. in. For laminated materials, a surface sheet coated or impregnated with the aromatic amine-formaldehyde product may be employed. Component parts moulded from fibrous material may be obtained by laying the impregnated fibrous material, e.g. flax, upon a surfacing sheet of paper impregnated with the amine-formaldehyde product; alternatively, a partially - cured moulded part may be coated with the product and then fully cured, or the part may be moulded from powder in a mould lined with the product. The synthetic resin component parts may contain fillers, e.g. wood flour or slate dust. The aniline-formaldehyde condensation product is obtained by reacting 1 mol. of aniline with 1.2-1.5 mols. of formaldehyde in the presence of hydrochloric acid and of sufficient water to keep the temperature between 25‹ and 45‹C., the solution obtained being allowed to stand for about 1 hour and the resin precipitated by addition of alkali. Phenol-formaldehyde for cementing the parts may be obtained by boiling, under reflux, 1 mol. of phenol with 1.3-1.5 mols. of formaldehyde in presence of an acid or alkaline catalyst. Specification 501,649, [Group V], is referred to.
Patent GB-1274531-A (GB)
Title: Method of making alloy steel powder
Inventor: HUSEBY ROBERT AMUND
IPC: C22C33/02
Filed: 1969-06-05
Abstract: 1,274,531. Alloy steel powder. A. O. SMITH-INLAND Inc. June 5, 1969 [June 26, 1968], No. 28498/69. Heading C7A. Finely divided alloy steel powder to be annealed and used in powder metallurgy processes consists, by weight of: Impurities may be Ti and Al each less than 0À05%, S less than 0À04% and P less than 0À035%. The powder, which has an apparent density greater than 2À6g/cc and a green density at a compaction pressure of 30 tsi greater than 6À4g/cc with lubricant is made by (1) atomizing a stream of molten steel by directing flat sheets of water thereagainst at an angle of 15-55 degrees with respect to the axis of the stream, (2) annealing the resulting particles in a reducing atmosphere at 1500‹-2100‹F. to soften the particles and reduce C to less than 0À05% and O 2  to less than 0À4%, and (3) breaking up the caked structure.
Patent GB-251876-A (GB)
Title: Manure spreader adapted to spread substances for the extermination of weeds
IPC: A01C15/04
Filed: 1925-11-12
Abstract: 251,876. Hoffmann, J. Nov. 12, 1925. Manure distributers.-For spreading manure for exterminating weeds, the ordinary broad-gauged spreading - machine, having a long delivery slot and a regulating slide, is provided with means for producing a wind that strikes the manure as it falls from the slot. A pipe d having horizontal perforations, or a slot directly rearwardly, may be mounted below and in front of the delivery slot c so as to extend the whole width of the manure box a. It is connected with a compressed-air conduit e or a fan f driven from a travelling wheel through a shaft h and belt pulley g. In a modification, the wind is produced by the rotation of a vaned spindle arranged below and in front of the slot e. A clutch may be provided to allow of the wind-producing apparatus being thrown out of gear.
Patent GB-339024-A (GB)
Title: Process of producing a new organic compound and the compound when prouduced thereby
IPC: C06B25/34
Filed: 1929-09-20
Abstract: 339,024. Pease, J., and Newell, F., (Asteck, E. L. d'). Sept. 20, 1929. Hexamethylenetetramine derivatives.-An explosive compound is obtained by oxidizing hexamethylenetetramine with hydrogen peroxide, treating the resulting product with nitric acid, and further oxidizing this product with hydrogen peroxide. In an example, hexamethylenetetramine is dissolved in hydrogen peroxide of at least 30 volume concentration, and nitric acid is added while stirring and cooling, until a white precipitate is thrown down. Hydrogen peroxide is again added until the precipitate redissolves, and the solution is protected from contact with the air, for example, by means of an upper layer of an inert liquid such as benzene or methylated spirits, or by bringing a piston down on its surface. The precipitate which forms is then filtered, washed with water and dried.
Patent GB-1381989-A (GB)
Title: Peeling citrus fruit
IPC: A47J17/04
Filed: 1972-06-19
Abstract: 1381989 Fruit peelers PRACTICAL INNOVATIONS Inc 19 June 1972 28645/72 Heading A4C A citrus fruit peeler 10, Fig.1, consists of a plate having a part-spherical curvature intended to conform to the outside surface of a fruit, and has a cutting edge 16, and a part 22 by which a user grips the peeler. The part 22 has small projections 26 to assist gripping, and holes 28. The peeler can be made from moulded plastics, or stamped from metal or plastics, or may be made from material impregnated with wax. The peeler is intended to be attached to a fruit by means of adhesive, adhesive tape, or wax, detached for use, and then disposed of. In Fig.6 a peeler 50 is shown which is bent at 72 and has a cutting edge 64. The peeler 50 is gripped by a user at 60, and the flange 64 limits the depth of penetration of the cutting edge into the fruit.