baber/WOPTO huggingface dataset:
Patent GB-799497-A (GB)
Title: Improvements in or relating to cutting machines
IPC: B24B9/16
Filed: 1955-09-02
Abstract: 799,497. Microtomes. MORAN, H. FERNANDEZ.- Sept. 2, 1955 [Sept. 4, 1954], No. 25236/55. Class 97(1) [Also in Groups XXIII and XXXIV] In a microtome, a rotor carrying the tissue or other specimen is mounted in effectively V-shaped bearings and the specimen is fed by the thermal expansion of a member extending diametrically of the rotor. Preferably, each bearing comprises two inclined plates 8 and the rotor 9 is located axially by protrusions 11 bearing on hardened surfaces of members 12. The bearings are described in further detail (see Group XXXIV). As shown, a diamond cutting tool (see Group XXIII) is mounted on a holder 41 and a bolt 16 carries a mandrel 17 holding the specimen 18. The mandrel may be thermally insulated from the bolt. Heating coil 25 may produce the required thermal expansion of the bolt 16 or the cavity 21 may be filled with dry ice or liquid air, hydrogen or helium and the temperature of the bolt allowed to rise gradually. It it is desired to feed the specimen very slowly the bearing plate 8 remote from the cutting tool may be heated. One terminal of heating coil 25 is earthed to the rotor at 29 and a slip ring connection is made to the other at 31. Trough 42 and tool holder 41 are mounted on a carriage 35 movable on a dove-tailed guide 34 by a micrometer 36. Bolts 16 of steel, brass or aluminium may be used but for the thinnest section, bolts of invar nickel steel are used or the bolt is replaced by a tube of glass or quartz. The diamond used as a cutting tool is of the "bort" type of industrial diamond and a polishing machine of Specification 799,498 [Group XXIII] may be used for finishing the cutting edge. A number of bolts 16 may be arranged in an axial plane of or helically in the rotor 9.
Patent GB-584218-A (GB)
Title: Improvements relating to gain regulation in electrical communication systems
IPC: H04B3/10
Filed: 1944-12-15
Abstract: 584,218. Telephone transmission systems. SIEMENS BROS. & CO., Ltd., and MOLE, J. H. Dec. 15, 1944, No. 25244. [Class 40 (iv)] In a system for indicating, or controlling the gain of a repeater in accordance with, the attenuation of a transmission line, variations in received pilot current vary the cathode emission of a valve, the consequent change in the valve characteristics being utilized to effect the indication or control. In the indicating system, Fig. 1, the pilot current selected by the band-pass filter F is amplified at A to provide heater current for valve V1. Marginal relays X and Y, or just X, or neither, operate to give a visible indication according to the value of the anode current. In Fig. 2 (not shown), relays X and Y are replaced by a neutral relay W which only completes contacts one way or the other if the current varies a prescribed amount either way. In Fig. 3 (not shown), the impedance of the valve forms part of a potentiometer arrangement for biassing a second valve whose anode circuit contains the relay W. For automatic gain control, valves V2, V1, Fig. 5, are arranged as an attenuation network being respectively in series with and across the transmission path. Increase in the level of the pilot tone from the transformer coil T, increases the emission of V1 and decreases that of V2, thereby increasing the attenuation due to the combination. In Fig. 6 (not shown), attenuation is affected by shunting the transmission path with a transformer having its secondary connected in the anode circuit of the valve whose impedance varies according to its emission. In this type of arrangement the shunt impedance may be reduced by coupling the control grid to the anode or to a tapping on the anode coil by means of a condenser C, Fig. 7. If the series impedance is made inductive, C may be so proportioned as to produce greater gain changes at high than at low frequencies. The shunt circuit may instead be placed in the negative feed-back circuit of the repeater. In Fig. 8 (not shown), change of characteristic impedance of the valve with change in emission, is used to change the bias of a second valve whose anode impedance is connected across the transmission path by means of a transformer. An amplifier V2, Fig. 9, may have its gain controlled by bias obtained from a potentiometer comprising a cathode resistor and the anode impedance of the valve V1 whose emission is controlled by amplified pilot current. In all cases the amplifier A should have stable gain, e.g. it should incorporate current -controlled negative feed-back.
Patent GB-228108-A (GB)
Title: Improvements in or relating to fuel sprayers for internal combustion engines
IPC: F02M61/10
Filed: 1924-10-23
Abstract: 228,108. Sulzer FrÞres Soc. Anon. Jan. 22, 1924, [Convention date]. Addition to 225,184. Valve gear.-A fuel injection device, having a spraying valve which co-operates with a spring- pressed piston for injecting fuel on the opening of the valve, instead of discharging into the cylinder directly as described in the parent Specification, delivers into a pipe line. As shown in Fig. 1, the accumulator piston f is separated from the valve c and a lever q is provided to close the valve and maintain it on its seating after injection. An alternative construction is described, in which the piston f is annular in form and surrounds the valve c as in the parent Specification.
Patent GB-754902-A (GB)
Title: 1-amino-4-hydroxyanthraquinone sulphonic acid compounds
IPC: C09B1/52
Filed: 1954-08-31
Abstract: The invention comprises compounds of the general formula <FORM:0754902/IV(c)/1> wherein x represents a halogen atom or a sulphonic acid group, y represents a halogen atom in one of the positions 6 and 7 or a sulphonic group in one of the positions 5, 6, 7 and 8, and z represents a hydrogen atom or a halogen atom in one of the positions 7 and 6 when y represents a halogen atom and represents a hydrogen atom when y represents a sulphonic acid group, at least one of x, y and z representing a sulphonic acid group.  The invention further comprises a process for the production of 1-amino -4- hydroxyanthraquinone sulphonic acid compounds of the above general formula wherein x represents a halogen atom or a sulphonic acid group, y represents a hydrogen atom, or a halogen atom in one of the positions 6 and 7, or a sulphonic group in one of the positions 5, 6, 7 and 8, and z represents a hydrogen atom or a halogen atom in one of the positions 7 and 6 when y represents a halogen atom and represents a hydrogen atom when y represents a hydrogen atom or a sulphonic acid group, at least one of x, y and z representing a sulphonic acid group which comprises heating the corresponding 1-amino -4- bromoanthraquinone sulphonic acid compounds with concentrated sulphuric acid in the presence of boric acid.  The products may be used for dyeing wool and other nitrogen containing fibres.  Some of the dyestuffs dye polyacrylonitrile fibres by the cuprous ion method. In the examples sodium salts of the 1-amino -4- bromo anthraquinone starting materials are heated until bromine evolution ceases with mixtures of sulphuric acid monohydrate, fuming sulphuric acid and boric acid, the starting materials employed being the sodium salts of 1-amino -4- bromoanthraquinone -2- sulphonic acid (1), 1-amino -4- bromoanthraquinone -2-6- disulphonic acid (2), 1-amino -4- bromo- 6, 7-dichloroanthraquinone -2- sulphonic acid (3), and 1-amino -2, 4-dibromoanthraquinone -6- sulphonic acid (4). Further products obtained in additional examples by similar processes using corresponding 1-amino -4- bromoanthraquinone sulphonic acids are 1-amino -4- hydroxyanthraquinones in which additional substituents are 6-chloro, 2-bromo, acid (5); 7-chloro, 2-sulphonic acid (6); 6-fluoro 2-sulphonic acid (7); 2-bromo, 7-sulphonic acid (9); 2-bromo, 5-sulphonic acid (10); 2-bromo, 8-sulphonic acid (11) and 2 : 7-disulphonic acid (12).  Technical mixtures obtained in further examples contain 1-amino -4- hydroxy -6-and -7- bromoanthraquinone -2- sulphonic acids (8) 1-amino -4- hydroxy anthraquinone -2 : 5- and -2 : 8- disulphonic acids (13) and 1-amino -4- hydroxyanthraquinone -2 : 6- and -2 : 7- disulphonic acids (14).  The products are separated as sodium salts except in Example 3 where lithium salt is obtained and the colours of solutions in sulphuric acid before and after treatment with paraformaldehyde are mentioned.  An acid aqueous solution of the product (2) is employed to dye wool and the dyeing is chromed.
Patent GB-422000-A (GB)
Title: Improvements in or relating to firelighters
IPC: C10L11/04
Filed: 1933-09-14
Abstract: 422,000. Firelighters. MATTHEWS, S., 36, Derbyshire Lane, Hucknall, Nottinghamshire. Sept. 14, 1933, No. 25439. [Class 50] Firelighters made up of wood &c. sticks A arranged side by side and caused to assume a cross - like formation are held together by a band iron or other metal strip B cut and bent at each side to form prongs C to hold the wood pieces, the prongs at one side alternating with those at the other, as shown, or being opposite one another. Alternate sticks may project somewhat on either side. Inflammable material may be secured to the underside of the lighter. Specification 179,640, [Class 50], is referred to.
Patent GB-186609-A (GB)
IPC: F04F9/00
Filed: 1922-09-20
Abstract: 186,609. Gaode, W. Sept. 30, 1921, [Convention date]. Aspirating-apparatus, ejector.-In a mercury-vapour high vacuum ejector, the vapour is discharged from a nozzle a, Fig. 1, and is condensed by passing through an annular member b, surrounded by a water-cooling jacket d, a layer of mercury f being confined between the jacket and the member b. In Fig. 2, the invention is shown applied to a pump for exhausting air from a vessel by way of a passage 46, in which the pump barrel 20 is surrounded by a water jachet 21. A numher of vapour-condensing chambers k, m, n, o, are provided between the liquid mercury reservoir 1 and the vessel &c. to be exhausted, the degree of vacuum increasing in each successive chamber from the reservoir. These chambers are fitted with cooling elements 27, 28, 29 constructed as shown in Fig. 1, and a similar element 18 is provided between the chamber k and the upper part 2 of the reservoir 1. A low vacuum pump is connected to the nipple 25 at the end of a passage 24 communicating with the chamber k, and the mercury in the reservoir is heated. Vapour passes up a jacketed tube 12 and out through annular nozzles 39. 41, and full-bore nozzles 35, 30. The air is exhausted from the various chambers and the mercury vapour is condensed in the cooling elements 29, 28, 27 the liquid mercury passing back into the reservoir 1 through passages 37, 38, 33. Leather cups 19 ensure a tight joint between the cooling elements and the water jacket. Specification 19793/14 is referred to.
Patent GB-1181286-A (GB)
Title: Improvements in Lenses of Variable Focal Length
IPC: G02B7/04
Filed: 1967-06-02
Abstract: 1,181,286. Zoom lenses. JOS. SCHNEIDER & CO. OPTISCHE WERKE. June 2, 1967 [June 2, 1966], No.25598/67. Heading G2J. In a zoom lens in which one member 5, Fig. 2, is moved directly and is coupled to a second member 6, the differential movement of the latter is controlled by a fixed cam member 15. As shown, members 5, 6, are coupled by a tension spring 7, and member 5 is moved by a bolt 12 thereon which forms the pivot for a bell crank lever 11 having one arm 14 bearing on member 6 and another arm 13 engaging the fixed cam member 15.
Patent GB-408660-A (GB)
Title: Universal joints and like couplings for conveying rotary or linear motion
IPC: F16D3/221
Filed: 1932-09-15
Abstract: 408,660. Ball joints. JARDINE, W. H., 44, Florence Road, Sanderstead, and STANDRING, J. R., Sherwood, St. Nicholas Avenue, Great Bookham, both in Surrey. Sept. 15, 1932, No. 25657. [Class 65 (ii).] A universal joint, for transmitting rotary or linear movement, comprises two drive-transmitting balls D fitting partly in a groove K on a spherical head J and partly in radial holes in a one-piece spherical cup L, and retained therein by a one-piece shroud E, which also restricts axial movement between the cup and head. For the latter purpose the shroud may have an inturned flange E<2>, Fig. 1, or it may press four or more thrust balls P, Fig. 5, against the surface of the head J. The shroud may be screwed on the cup or its end may be spun over it. A greaser O and spring-pressed cover C of steel, brass or aluminium may be provided.
Patent GB-1433970-A (GB)
Title: Dimesnionally-stable anode assemblies
IPC: C25B11/02
Filed: 1974-06-10
Abstract: 1433970 Anode assemblies DIAMOND SHAMROCK CORP 10 June 1974 [11 June 1973] 25680/74 Heading C7B A dimensionally-stable anode assembly, for an alkali metal chlorate or hypochlorite or diaphragmtype chlor-alkali cell, comprises at least one anode riser 12 having a pair of parallel planar metal sheets 30, 30' joined to opposite side thereof, a first end portion 32, 32 of each sheet parallel to and aligned with a second end portion 34', 34 of the other sheet, the second end portions of each sheet including a leg portion 36, 36' extending towards the other sheet and terminating in a flange portion 38, 38 joined to the first end portion of the other sheet, and an electro-conductive surface 14 e.g. an oxide coating upon each sheet e.g. of Ti. Preferably each first end portion is equi-distant from the riser and joined to the other sheet by a series of spot welds; and each sheet, preferably identical, is similarly spot welded to the riser. Preferably the riser is cylindrical comprising a Cu tube core 16 clad with a Ti cover 18 with upper and lower ends closed with welded Ti cap 20 and flange 22. The sheets are preferably foraminous, expanded or perforated Ti. The assembly is formed by positioning the pair of sheets and the riser in the relative relationship, with rigid platen members placed within the assembly to extend between the planar extents of the sheets and leg portions and riser, clamping the assembly between rigid planar external platens positioned to leave exposed those portions to be joined, then joining the sheets to the riser and the end portions together by welding. The assembling is effected using a clamping platen assembly Fig. 4 (not shown) comprising lower intermediate and upper platen units (50, 56, 62) each comprising two platen members (52, 54; 58, 60; 64, 66).
Patent GB-1074771-A (GB)
Title: Muffler for silencing gaseous flows
IPC: F01N1/00
Filed: 1964-06-22
Abstract: 1,074,771. Stamping; making exhaust silencers. WALKER MANUFACTURING CO. June 22, 1964 [June 27, 1963], No. 25691/64. Headings B3A and B3Q. [Also in Division F1] An outer shell 5 of an exhaust silencer is pinched in at sections 7, 11, 13, 15, 9, so as to grip an inner tube 3. The reduced sections, each of which has arcuate reductions separated by ribs (29), (31), (33), (35), Fig. 3 (not shown), may be spot-welded to the tube 3.
Patent GB-252115-A (GB)
Title: Improvements in valve mechanism for pneumatic brakes
Filed: 1925-10-14
Abstract: 252,115. Drolshammer, I. May 12, 1925, [Convention late]. Fluid-pressure.-An auxiliary valve for use in connection with the main control valve of an automatic compressed-air brake to give a relatively free initial flow of air to the brake cylinder followed by a restricted flow is controlled by the brake cylinder pressure opposed to the pressure in the usual auxiliary reservoir or in a separate reservoir. As shown in the Figure, the device comprises a piston valve 14 constantly exposed on its upper surface to auxiliary reservoir pressure by passage 6 and engaging at its lower end a piston 13 the upper side of which is constantly open to atmosphere by the passage 30 and the lower side to the brake cylinder by the passage 12. In the release position shown, the brake cylinder is open to atmosphere by a passage 39 past the piston 13 in addition to the usual exhaust passage whereby complete release of the brakes is ensured. The valve 14 comprises ports 37, 40, 15 and in the initial stage of an application, air from the auxiliary reservoir flows to the brake cylinder at first by the wide port 37 and passage 9 until the pressure on the underside of the piston is sufficient to raise this piston and the valve 14 to bring the restricted port 40 into register with the passage 9. At this stage a spring '22 becomes operative and is compressed during further rise in the brake cylinder pressure until a third relatively wide port 15 is brought into register with the passage 9. Packing 21 on the piston 13 makes a tight joint with the valve bush 20 in the upper position of the piston. In a modification, the valve is interposed in the passage from the main valve to the brake cylinder instead of in that between the auxiliary reservoir and the main valve, the air passing to and from the brake cylinder through the, ports 37, 40, 15 and a bore in the valve stem and piston 13. Specification '225,566 is referred to.
Patent GB-1112274-A (GB)
Title: Improvements in or relating to electric heaters
Inventor: HAGER NATHANIEL ELLMAKER
IPC: F24D13/02
Filed: 1965-06-17
Abstract: 1,112,274. Resistance heating elements. ARMSTRONG CORK CO. 17 June, 1965, No. 25694/65. Heading H5H. [Also in Division B5] A large area electric heater comprises a semiconductive layer, having a uniform thickness d inches and a resistivity R a  in the range 4 x 10<SP>3</SP> to 4 x 10<SP>7</SP> ohm-inches, sandwiched between two electrodes at least one of which is a metal foil having a resistivity R s  ohm-inches, a thickness t in the range 0À0001 to 0À01 inch, and a length L inches. The heater is constructed so that when a voltage V is impressed across the electrodes, current flows therebetween in a direction perpendicular to the planes of the electrodes, and the power per unit area P = V<SP>2</SP>/R a <SP>d</SP> does not vary more than 20% over the area of the heater. This is achieved by choosing t = KR s L<SP>2</SP>/R a <SP>d</SP> where K depends on the position and form of the power connections which extend across the width of the electrodes, and is in the range 4 to 2000. The power connections may be at corresponding or opposite ends of the electrodes and may be formed by extensions of the electrodes or by strips applied over the edges of the electrodes. One of the electrodes may be a rigid plate, so that the heater forms a food-warming or cooking plate, or the heater may be a flexible sheet for use in floors, walls, ceilings or roads. The heater may comprise two semi-conducting layers sandwiched between three electrodes, both outer electrodes being earthed. The electrodes may be of aluminium, copper or stainless steel and the semi-conducting adhesive layer of carbon black or graphite mixed with an epoxy resin or thermoplastic material. A suitable epoxy resin is the reaction product of epichlorohydrin and a bis-phenol which is mixed with a hardening agent or catalyst, e.g. amines or amides, and melted or applied as a film to one or both electrodes which are then pressed together and heated to cure the resin. Suitable thermoplastic materials are polyvinyl acetate, vinyl chloride - vinyl acetate copolymers, vinyl acetate-ethyl acrylate copolymers, ethyl acrylate - methyl methacrylate copolymers, and acrylic ester polymers. Conducting ceramic materials may also be used for the semi-conducting layer. Specific examples are given.
Patent GB-384722-A (GB)
Title: Improvements in the manufacture and production of organic sulpho-chlorides
IPC: C07B45/00
Filed: 1931-09-14
Abstract: Organic sulphochlorides are manufactured by heating salts of aliphatic, cycloaliphatic, aromatic or heterocyclic sulphonic acids or their substitution products with benzotrichloride or its substitution products, if desired in the presence of inert organic solvents, e.g. trichlorobenzene, nitrobenzene, paraffin oil or naphthalene.  The reaction may be carried out at 150-200 DEG  C. Depending on the proportions of the components employed, benzoyl chloride or a benzoic acid salt (or the corresponding substitution product) is obtained as a bye-product, together with a metallic chloride.  The reaction mixture may be worked up by introducing it into benzene, separating the metallic chloride, distilling off the benzene and fractionally distilling the residue, or by direct fractional distillation.  In examples: (1) b -naphthalenesulphonic acid sodium salt is heated with benzotrichloride or 2 : 4-dichlorobenzotrichloride, producing b -naphthalenesulphochloride together with benzoyl chloride or 2 : 4-dichlorobenzoyl chloride; (2) p-toluenesulphonic acid sodium salt is heated with benzotrichloride to produce p-toluenesulphochloride and benzoyl chloride; (3) sodium methanesulphonate similarly yields methanesulphochloride and cyclohexanesulphonic acid sodium salt yields cyclohexanesulphochloride; (4) sodium anthraquinone - 2 - sulphonate is similarly converted into anthraquinone - 2-sulphochloride and pyridine-a -sulphonic acid sodium salt into pyridine-a -sulphochloride; (5) sodium m-nitrobenzenesulphochloride.  Sodium 4 - chlorotoluene - 2 - sulphonate and 4-chloronaphthalene-1-sulphonate are also specified as starting materials.  The Provisional Specification comprises the manufacture of sulphohalides in general by the use of benzotrihalides in general, benzotribromide being additionally specified.
Patent GB-257163-A (GB)
Abstract: 257,163. Gazda, A. Jan. 25, 1926. Channels in cylinders. - An internalcomb us - tion engine is lubricated by pumping oil to an annular duct 22 with fine outlets, which form an annular nozzle directed towards the cylinder interior.
Patent GB-535615-A (GB)
Title: Improvements in or relating to belt fasteners
IPC: F16G3/00
Filed: 1939-09-14
Abstract: 535,615. Belt fastenings. TAGG, W. H., and DOLEMAN, T. Sept. 14, 1939, No. 25776. [Class 80 (i)] In belt fastenings wherein the ends of the belt are connected by one or more lengths of flexible cable, e.g. as described in Specification 505,372, a guard device is provided for one or both sides of the cable where it passes through the belt in order to prevent it from being chafed or flattened by pulleys over which the belt passes or by material conveyed by the belt. Over each hole 4, 4a in the belt ends 1, 2 is positioned a guard member 5 consisting of a plate with chamfered ends one end of the plate having a hole 6 for the reception of a rivet 7. The other end having a channel 8 in which the cable is to lie. A ferrule 9, Fig. 3, is preferably inserted through the holes 4, 4a, and portions 11 thereof bent over against the belt to provide rubbing surfaces for the cable. The open ends of the ferrules are riveted over the members 5. The cable ends are connected by a U-shaped member 13 having a number of slots 14 in its walls 13a in alignment with the cables. The part of each cable below the belt is passed through opposite slots 14 and the free ends are brought back to lie above this part, enlargements 15 on the free ends serving to retain them in the connecting member 13. After all the enlargements have been inserted, they are retained by a cover plate 16 held by split pins 17. The guard members 5 are preferably arranged in two staggered rows at each end of the belt. Instead of a separate member 5 being provided for each cable, a composite member 18, Fig. 10, may be provided, such member having the requisite holes 4, 6 and channels 8. The sides of the channels 8 may be unconnected or, by increasing the thickness of the guards may be connected at the bottom. In lieu of using ferrules, each member 5 may be formed on its under face with a boss 19, Fig. 7, of a depth equal to half the thickness of the belt. In a further modification, a ferrule is positioned in each hole in the belt and the ends turned over, a member 5 or 18 being then placed over the ferrules.