baber/WOPTO huggingface dataset:
Patent GB-312289-A (GB)
Title: Improvements in and relating to the manufacture of amino-halogen-anthraquinones
IPC: C09B1/22
Filed: 1927-11-21
Abstract: 312,289. Beckett, E. G., Woodcock, W. G., Thomas, J., and Scottish Dyes, Ltd. Nov. 21, 1927. Samples furnished. Aminohalogenanthraquinones are obtained together with varying amounts of di- or polyaminoanthraquinones by autoclaving di- or polyhalogenanthraquinones with ammonia, and interrupting the process before the proportion of di- or poly-aminoanthraquinones in the product exceeds that of aminohalogenanthraquinone The aminohalogen compounds are separated from the di- or poly-amino compounds and from unchanged parent material by virtue of their different solubilities in sulphuric acid of various concentrations. According to examples, 1.: 5- dichloranthraquinone is autoclaved with ammonia, and the product, consisting of 1- amino-5-chloranthraquinone, 1: 5-diaminoanthraquinone, and 1 : 5-dichloranthraquinone, is worked up by dissolving in concentrated sulphuric acid, diluting to 80 per cent strength, cooling to 80‹ C. and filtering off the dichloranthraquinone; on cooling, the sulphate of 1-amino-5-chloranthraquinone separates; on dilution of the filtrate to 10 per cent, a mixture of 1-amino-5-chloranthraquinone and 1 : 5-diaminoanthraquinone separates. Specification 173,006 is referred to.
Patent GB-478537-A (GB)
Title: Improvements in and relating to the manufacture and production of tanning agents
IPC: C14C3/20
Filed: 1936-11-17
Abstract: Tanning-agents are obtained from a reaction product or a mixture of acetone with formaldehyde, ammonia or urea by treating the reaction product or mixture with an aromatic sulphonic acid and formaldehyde. Suitable aromatic sulphonic acids are those obtainable from naphthalene, methylnaphthalene, anthracene, phenanthrene, phenol, cresol and naphthol.  The reaction mixture may include also an aromatic hydroxycarboxylic acid, e.g. salicylic acid, and if the reaction product is insufficiently soluble in water, it may be sulphonated; the solubility of the product may also be improved by after-treating the product with an aromatic sulphonic acid, with or without formaldehyde.  In the examples: (1) sulphonated crude cresol is heated with triacetone diurea and formaldehyde; (2) triacetone diurea is heated with sulphonated crude cresol, formaldehyde, and salicylic acid; (3) triacetone diurea is heated with naphthalene-2-sulphonic acid and formaldehyde, and the product is heated with anthracenesulphonic acid; after-treatment with formaldehyde may follow; (4) triacetone diurea is heated with naphthalene - 2 - sulphonic acid, sulphonated crude cresol, and formaldehyde; (5) a mixture of acetone, formaldehyde and caustic soda solution is allowed to stand and then heated with the sodium salt of sulphonated crude cresol; formaldehyde and sulphonated crude cresol are then added, and heating is continued; (6) a reaction product of acetone and ammonia (mainly di- and tri-acetonamine) is heated with sulphonated crude cresol, formaldehyde and sulphuric acid; (7) a mixture of acetone and formaldehyde is treated with sulphonated crude cresol.  The Specification as open to inspection under Sect. 91 refers to the treatment of a reaction product or mixture of acetone with an organic compound containing at least one --NH--group in the molecule.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1424399-A (GB)
Title: Portable cooking appliance
IPC: F24C3/14
Filed: 1973-07-02
Abstract: 1424399 Collapsible picnic stoves ETUD SA 2 July 1973 [6 July 1972 26 June 1973] 31496/73 Heading F4W [Also in Division A4] A portable cooking stove comprises a heating device within an oven structure having two side walls and a top portion associated with an external hot-plate, the structure being foldable for housing within a case having a base and cover which define respectively the base and back wall of the oven structure, when assembled, wherein the oven structure is automatically unfolded as the case is opened. In the form shown, each side wall includes two plates 6, 8 which in order to fold one on top of the other are pivotally connected at 9 to each other and at 7, 10 to the case base 2 and the top portion 11, and the top portion 11 is linked to the case cover 1 by arms 12 having rollers 14 which are received in guide slots 15 in the top portion 11. The pivots 7 include pivot pins along which the plates 6, 8 are slidable rearwardly to engage the cover 1 when the case is opened. A removable spit (49, Fig. 3) and mechanical or electrical driving means (50) and a drip pan (28, Fig. 2) are provided. The heating device comprises a gas burner 31A and radiant elements 31B of perforated sheet steel or an interchangeable electrical resistance heating element. The hot-plate 133 is removable and reversible, is made of aluminium or cast iron and has a smooth face and a ribbed face, and may be coated with polytetrafluoroethylene. The pivots 7 may be replaced by fixed pivots (117, 118, Fig. 12) and the cover and base of the case may be pivotally connected (at 106, 107) so that in the open position the cover automatically contacts the rear edges of the side walls and top portion.
Patent GB-640675-A (GB)
Title: Improvements relating to apparatus for the supply of high voltage uni-directional current from a relatively low voltage alternating current source
IPC: H02M7/10
Filed: 1947-11-28
Abstract: 640,675. Rectifying. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd., PETER, L. H., and WALKER, A. H. B. Nov. 28, 1947, Nos. 31512/47 and 1257/48. [Class 38 (ii)] Apparatus for the supply of an extra high 'unidirectional voltage from a centre-tapped low voltage alternating supply comprises a voltage multiplier having a number of series-connected rectifiers 21-23, the connecting points of which are connected through one or more condensers 24-27 to the terminals 5, 6 of the alternating supply, the connections being made alternately first to one supply terminal and then to the other, the end 32 of the chain further from the supply being connected through an auxiliary rectifier 33 to one extra high-tension terminal 34, this terminal being connected through a condenser 35 to the centre tap of the supply and the other end 30 of the chain being connected through a second auxiliary rectifier 31 to the other extra high-tension terminal 13, this terminal being maintained at the same alternating potential as the centre tap of the supply. The transformer T may form an element in the high-tension supply in thermionic valve apparatus or the voltage multiplier may be connected directly to a low voltage. A.C. supply through a number of blocking condensers. Thus the voltages which exist between the points 30, 32 and the centre tap are rectified and added to the E.H.T. voltage generated and no A.C. component of voltage is obtained between the terminals 13, 34. Alternatively, the point 30 may be connected through the auxiliary rectifier 31 to the junction of the rectifiers 9, 10 so that the H.T. voltage also is added to the E.H.T. voltage produced. Specification 640,674 is referred to.
Patent GB-898142-A (GB)
Title: Improvements in or relating to the reproduction of magnetic recordings
IPC: G11B5/53
Filed: 1959-09-16
Abstract: 898,142. Editing magnetic recordings; hall plate heads. SIEMENS-SCHUCKERTWERKE A.G. Sept. 16, 1959 [Sept. 25, 1958], No. 31603/59. Class 40 (2). [Also in Group XXXVI] Magnetic apparatus for varying the speed but not the pitch of signals recorded on magnetic tape by differential drive of tape and a rotating playback head embodies Hall plates in the head construction. In Fig. 1, a Hall plate or plates 3 are placed between two ferromagnetic hemispheres 1, 2, the tape 4 being lapped 180 degrees about the head so that only one of the gaps is operative. Brake means associated with the head drive hold the head for normal use of the recorder such that one gap is held well clear of the tape. In Fig. 2, a plurality of Hall plates 11-18 are mounted in a ferromagnetic ring member 5. Associated with such a head is a transformer, Fig. 3. A fixed winding 8 is coupled to a plurality of secondary windings 9, one for each Hall plate, mounted to rotate with the head. The secondaries either feed control current to the plates or feed signal voltages out, a common slip-ring connection to all plates providing the other feed. The control current may be at a supersonic frequency with or without associated rectifying means at the local plate circuits. Reference has been directed by the Comptroller to Specification 782,327.
Patent GB-743956-A (GB)
Title: Adjustable post
Inventor: MYERS CLARENCE E
IPC: E21D15/20
Filed: 1953-11-16
Abstract: 743,956. Rapid adjustment devices for screw jacks. SUMMIT STEEL PRODUCTS, Inc. Nov. 16, 1953, No. 31687/53. Class 78 (3). A jack or prop comprises a fine adjustment screw jack 38, 41 mounted on a pair of telescopic tubes 35, 36 which can be locked in a number of extended positions by a pair of half annuli 37a, 37b which rest on the top of tube 36 by means of tapered grooves 48 and engage a selected groove 45 in tube 35.
Patent GB-1358176-A (GB)
Title: Carpet sweepers
Inventor: SMYTH D N
IPC: A47L11/22
Filed: 1971-07-06
Abstract: 1358176 Carpet sweepers S A BRUSH CO Ltd 6 July 1971 [8 July 1970] 31766/71 Heading A4F A carpet sweeper brush 16 is driven from the sweeper supporting wheels 15 via rollers 19 so positioned that in use the brush 16 sweeps the carpet beneath the rollers 19 and over substantially the entire width of the sweeper body 1. The brush 16 has helical rows of bristles 22 between the rollers 19 and additional bristles at the brush ends 18, the bristles adjacent the rollers 19 extending towards the zones radially surrounding them so that areas beneath the rollers are swept. The wheels 15 are mounted by cranks 29 on the dust trays 5 as described in Specification 1358177, and each tray carries a brush cleaning comb 27 and has a portion 8 connected by a hinge 12 to the remainder and attached to the sweeper body 1 by clips 10. A lever 4 operates cam and pull wire mechanism 40, 42 Fig. 2, (not shown) to pivot the trays 5 between open and closed positions.
Patent GB-981340-A (GB)
Title: Improvements in or relating to circuits for combining binary signals
IPC: H03K3/45
Filed: 1962-08-20
Abstract: 981,340. Electric selective signalling systems: full-adders: comparators. SIEMENS & HALSKE A. G. Aug. 20, 1962 [Aug. 18, 1961; Sept. 19, 1961], No. 31822/62. Headings G4A,G4H and G4M. [Also in Division H3] A transformer logic circuit is characterized in that a one bit is represented by positive current and a zero bit by negative current and by the fact that each input bit (or each output bit) is associated with a single corresponding transformer and each output bit (or each input bit) is associated with a chain of series connected windings one from each transformer. The invention is illustrated by several embodiments including various basic gating circuits (Fig. 4), various recoding circuits (Figs. 3 and 5), an adder (Fig. 6) and a comparator (Fig. 12). Gating circuits Fig. 4. Input signals W and X are applied to the primary windings Iw, Ix of two transformers having secondary windings 1w, 2w, 3w, 4w and 1x, 2x, 3x and 4x so poled (as indicated by the diagonal lines) and interconnected via diodes G1 G21 &c. to output terminals SSG, OG and EOG as to produce an "inverted and" output, an "or" output and an "exclusive or" output. Recoding circuits-Figs. 3 and 5. In Fig. 3 a combination of four signals W, X, Y, Z applied to the primary windings of transformers Kw, Kx, Ky, Kz produces a two-out-of-eight marking on the inter connected secondary windings. The input bits are represented by current of positive polarity for "one" and negative polarity for "zero" (indicated by L and O on the drawing) and the marked output lines carry two positive units whereas the other leads carry either zero current or two units of negative current. The circuit of Fig. 5 is basically similar to that of Fig. 3 except that it produces a one-out-of-ten output and in that by the use of a bias current of minus two units -2u and by the use of diodes G1 to G10 the marked output is positive and the rest are negative. Adder-Fig. 6. A full-adder Fig. 6 receives input bits X, Y, Z and produces sum and carry outputs S and T respectively. By the use of a bias of u and diodes G1 &c., the output terminals S and T carry a positive potential for a "one" bit and a zero potential for a "zero" bit. Comparator-Fig. 12. Each of two input items of date X, Y, Z and X<SP>1</SP>, Y<SP>1</SP>, Z<SP>1</SP> is effectively converted into a one-out-of-eight form, which are then mutually opposed, the result being that if the two input items are identical no output is produced at a terminal N but if they differ an output is produced. The use of a bias of -4n and diodes G1 &c., ensure that the output, if produced is positive. Specification 981,335 is referred to.
Patent GB-903734-A (GB)
Title: Processes for the manufacture of hollow articles from reinforced synthetic resins
IPC: B29D24/00
Filed: 1958-10-06
Abstract: 903,734. Moulding hollow articles. KEPKA, A., and KEPKA, S. Oct. 6, 1958 [Oct. 5, 1957; April 9, 1958], No. 31825/58. Class 87(2). Fibre-resin articles are moulded in a closed mould 1a 2a by removing air from the mould through a pipe 7, and then pressing the fibre and resin by an inflatable bag 3a which is supplied with compressed air through a pipe 9. The resin may be fed to the mould, if necessary under pressure, before, during or after the vacuum operation. The fibrous material may be cured or uncured resin reinforced fibrous mats, which may abut as at 6 against the sides of the mould. In a modification, Fig. 6, preformed resin impregnated mats 45, 46 are placed in a mould cavity 23 between mould parts 20, 21, 22, resin 49 is poured into a mould cavity and the mould tightly sealed by supplying compressed air to an inflatable member 40. Compressed air is also supplied through a pipe 32 to inflatable members 31 to seal channels 24. Vacuum is then applied to pipes 29, 30 to exhaust the air from the mould. The inflatable members 28 are supplied with compressed air to completely seal the mould, and the member 47 is inflated to press the fibre and resin against the mould. Subsequently air is exhausted from the members 38<SP>1</SP>, to allow excess resin to pass from the mould cavity to the channels 24 and out through pipes 42. In a modification, Fig. 7 (not shown), an apparatus similar to that shown in Fig. 6 is located within a closed autoclave. In a further modification, Fig. 8, the moulded article may be formed with a foamed filling by clamping preformed resin sheets 62 between mould parts 60, 61 enclosing foamable or partly foamed material P, placing resin in the mould cavity 66, sucking air from the mould cavity through a pipe 67, and supplying cold or hot air and simultaneously or successively hot air or water through the pipe 65 to foam the material P. Alternatively, the material may be foamed by a chemical agent in which case the pipe 65 is dispensed with. The inner walls of the sheets 62 may be coated with an adhesive. In a further modification, Figs. 9 and 10 (not shown), an inflatable member may be provided within the foamed material to form a hollow in it.
Patent GB-1393681-A (GB)
Title: Texturing machines for synthetic yarns
IPC: D02G1/08
Filed: 1971-07-07
Abstract: 1393681 Texturing yarns; false twister PLATT INTERNATIONAL Ltd 5 July 1972 [7 July 1971] 31922/71 Headings DID and D1F A false-twist unit comprises a twist bush mounted for rotation in a gas bearing and provided at each end with an annular insert made of a material having a high coefficient of friction (having regard to the material of the yarn to be twisted) which imparts twist to a running yarn passing through the bush and which forms a flared yarn engaging portion at the end of the bush. Each insert may be of quadrant section and the material thereof may be polyurethane. The bearing may be an aerostatic or aerodynamic bearing to which compressed air is supplied from an external source or in which a supporting air film for the bush is generated by the bearing: the same bearing may operate as the first form at start speeds and as the other form at working speeds. The unit may be incorporated in a yarn texturing assembly at each yarn handling station of a textile machine e.g. as described in British Patent Specification 1280168, wherein adjacent twisters (or pairs thereof) are belt driven to rotate in opposite direction and are supplied with filtered air for the bearings from common twin ducts.
Patent GB-1274643-A (GB)
Title: Improvements relating to motor land vehicles
Inventor: SAMUEL JON MICHAEL GLEN
IPC: B29C67/00
Filed: 1968-07-04
Abstract: 1,274,643. Sheet forming. DIVA CARS Ltd., [trading as ENFIELD AUTOMOTIVE]. 30 Sept., 1969 [4 July, 1968], No. 31951/68. Heading B5A. [Also in Division B7] Interfitting components of a car body are each vacuum formed in a female mould such as 16 with the aid of shaping blocks 18 which apply the sheet firmly to the corners, base and any undercuts in the mould. The sheet material may comprise a pair of ABS skins between which is sandwiched a foamable layer. In use, a heat softened sheet is placed over the mould and allowed to sag part-way into it, the mould being open to the atmosphere. The sagging sheet is finally applied to the mould by vacuum assisted by the shaping blocks 18.
Patent GB-251207-A (GB)
Title: Furniture support
IPC: A47B91/04
Filed: 1925-12-18
Abstract: 251,207. Gebhard, C. Dec. 18, 1925. Tips.-A tip for chair legs and similar supporting members of articles' of furniture, comprises a resilient pad 5 adapted to be attached direct to the foot of the chair-leg 9 by a nail 10 and having a cupped periphery which is slipped over and retains a flange 16 on a metal wearing base 15. A central core 8 on the pad 5 is compressed within the constricted mouth of the base 15 to position the base laterally. The core 8 is recessed at 11 to take the head of the nail and carries a reinforcing washer 13 of large area.
Patent GB-1516303-A (GB)
Title: Conveyor apparatus
IPC: B65G47/26
Filed: 1974-07-19
Abstract: 1516303 Batching sheets METAL BOX Ltd 15 July 1975 [19 July 1974] 32061/74 Heading B8R A device for forming batches from a stream of shingled sheets comprises a plurality of conveyer belts each extending between inlet and outlet positions and a reciprocable carriage (8) constraining the belts so that one belt 28, Fig. 2, forms the upper run of an intermediate conveying portion and the other belt, 26, Fig. 3, forms the upper run of upstream and downstream conveying portions. The reciprocation of the carriage in the downstream direction entrains the belt 28 so that the belt is accelerated to separate a batch of sheets. During return of the carriage to the upstream end of the device the belt 28 moves freely relative to the carriage.
Patent GB-870590-A (GB)
Title: Improvements in gas pressure reducing valves
Inventor: SMITH JOSEPH
IPC: G05D16/06
Filed: 1956-11-22
Abstract: 870,590. Valves. HEATH Ltd., W. H. Feb. 24, 1958 [Nov. 22, 1956 (2)], Nos. 32114/56 and 32115/56. Class 135. A gas inlet chamber 13 houses a spring-loaded valve closure 15 having a central protrusion 18 and an annular synthetic resin or rubber sealing member 17, the closure co-operating with a seat 21 embodying an axial hole and a diametral slot 25 through both of which gas from chamber 13 passes before entering another chamber 22; the latter is partly defined by a diaphragm 26 that carries a pin 28 which passes through the axial hole into contact with the protrusion 18 and so determines the degree of opening between the closure 15 and seat 21 and hence regulates the pressure in chamber 22. The diaphragm is loaded by a spring 32 and a nut 33, which arrangement may also be used to unseat closure 15 should icing occur. Chamber 22 is connected by a passage 23 to a second pressure-regulating valve of identical construction; a pressure gauge 45 is connected to the output side of the second valve. The closures 15 each comprise a hexagonal outer casing 40 having line contact with the walls of the associated chambers 22, in which casing is a plug 41 that holds the member 17 in place and facilitates ready replacement of the latter. Specification 870,591 is referred to.
Patent GB-1430688-A (GB)
Title: Knitted fabrics for curtains
IPC: D04B21/10
Filed: 1973-07-06
Abstract: 1430688 Knitted fabrics for curtains GARDISETTE HOLDING AG 6 July 1973 [11 July 1972] 32270/73 Heading D1K A knitted fabric comprises spaced bridging threads connected by strips comprising a plurality of threads, the spacing between the strips being greater than that between the bridging threads and at least five times the width of each strip so that, when the strips are hung vertically (e.g. as curtains) and closer together than the lengths of the bridging threads, the latter bang in a curve. The bridging threads may be synthetic or natural fibres glass asbestos or metal. The strips may be warp knitted, laid-in wefts, laid-in warps or knitted cords and the bridging threads may be similarly formed being of course complementary to the strip. As shown, Fig. 1, weft threads 3 form the strips and are laid-in warp knitted chains 2 which form the bridging threads, additional warps 2a being laid into chains 2. In another embodiment, Fig. 2 (not shown), wefts 6 are laid in by guide bars. In a further embodiment, Fig 3, strips 9 are formed by warp knitted chains 7 and the bridging threads are laid-in wefts.
Patent GB-1396535-A (GB)
Title: Energy absorbing assembly
IPC: B60K37/00
Filed: 1972-07-11
Abstract: 1396535 Protective quards McCORD CORP 11 July 1972 [3 Aug 1971] 32294/72 Heading B7B [Also in Division F2] An energy-absorbing assembly, e.g. a vehicle dashboard assembly for absorbing the impact of the human frame, has a base member 14 to which an arcuate-sectional flexible shell 12 is secured at parallel edges (as by lugs 16 and screws 20) and the space between 12 and 14 contains flexible ribs 24 (24g in Fig. 5) secured, e.g. integrally, to the shell, other edges of the ribs being adjacent the base 14, which may be curved as at 30, Fig. 3. The shell and ribs are of stiff, resilient, microcellular, polyurethane foam. The ribs 24 may be inclined to the base 14, which may be part of the vehicle frame; some at least may abut the member. They may taper towards the member or have transverse grooves. The shell 12 may have a decorative skin 32. The fit of the shell with the base 14 is not airtight. There may be apertures 44, Fig. 5, in the base, each covered by a flexible valve member 46 to allow air release and to throttle its return after impact.
Patent GB-307372-A (GB)
Title: Improvements in seats
IPC: B60N2/30
Filed: 1927-12-02
Abstract: 307,372. Buch, M. A. Dec. 2, 1927. Folding and extensible seats.-A folding seat structure comprises a number of seat elements normally stacked one above the other so that the upper one alone can be used, and so connected, by links, with their support, that the upper seat element or elements may be displaced laterally to provide two or more seats, side-byside. The drawings show such a structure comprising seats 2, 3 connected with their support 23, 24, by linkwork 19, 20, 21, 22, 29, 31. The support 23, 24 may itself be carried by links 8, 9 pivoted at 60, 70 to members 6, 7.
Patent GB-485939-A (GB)
Title: Improvements in and relating to piston expanders
IPC: F16J1/00
Filed: 1936-11-27
Abstract: 485,939. Pistons. JOHNSTON, C. F. Nov. 27, 1936, No. 32587. Convention date, Nov. 27, 1935. [Class 122 (i)] A U-shaped resilient wire piston skirt expander is provided with curved legs 2 engaging the piston bosses and an intermediate portion 14 bent outwardly to engage a circumferential slot 9 in the piston. The ends of the legs 2 are sharpened to bite into the piston material. The tension of the expander may be adjusted by circumferential adjustment of the ends of the legs.