baber/WOPTO huggingface dataset:
Patent GB-943466-A (GB)
Title: Coil springs
Inventor: FOSTER EDWIN EARL
IPC: G01B3/10
Filed: 1959-11-19
Abstract: 943,466. Coil springs. J. B. TIGRETT. Nov. 19, 1959, No. 23993/63. Divided out of 940,982. Heading F2S. A coil spring 10 comprises an elastic ribbon 12 prestressed both longitudinally and transversely so that in both its coiled and uncoiled conditions the ribbon has a transversely arcuate form, the concave side of which forms the inner surface of the coil. The pre-stressing is affected by drawing the ribbon over a barrel-shaped die to stretch longitudinally the centre portion of the ribbon relative to its edges so that it tends to assume a coiled condition with the centre portion of greater radius than the edges.
Patent GB-1042522-A (GB)
Title: Improvements in or relating to corticosteroids
IPC: C07J75/00
Filed: 1963-06-17
Abstract: The invention comprises 11a ,19,21 - triacetoxy-14b  - hydroxy - D 1,4 - pregnadiene - 3,20 - dione, and its preparation by dehydration of the corresponding 5b -ol with an organic acid.  11a ,19,21 - Triacetoxy - 5b ,14b  - dihydroxy-D 1 -pregnene-3,20-dione is prepared by ozonolytic degradation and saponification of 1a ,11a -oxido-strophanthidol -3,19-diacetate to form 3b ,5b , 14b ,19,21 - pentahydroxy - 1a ,11a -oxido - pregnan-20 -one, acylating this to form the 21-acetate and the 19,21-diacetate, catalytically hydrogenating these products to form 5b ,11a ,14b ,19-tetrahydroxy -21 acetoxy-D 1-pregnene-3,20-dione and its 19-acetate, and acylating to form the 11a ,19, 21-triacetate.  The compound of the invention has mineralocorticoid and gluco-corticoid activity and may be used in pharmaceutical compositions in combination with a carrier, for example in forms suitable for oral, parenteral, topical or rectal administration.
Patent GB-1402494-A (GB)
Title: Production of a light-conducting glass fibre consisting of a core and a casing
IPC: C03B37/012
Filed: 1973-05-21
Abstract: 1402494 Optical glass fibres SIEMENS AG 21 May 1973 [13 July 1972] 24033/73 Heading C1M To produce a light conducting glass fibre consisting of a core and a casing, a core glass rod 1 is heated to a temperature just below its fusion temperature, the heated rod is coated with molten glass 2, the refractive of which is lower than that of the material of the cord rod 1 and the coated rod 1, 4 is drawn to a fibre. The heated rod 1 may be submerged into and withdrawn from a glass melt 2 heated at 3 or, as in Fig. 2 may be drawn upwardly through the melt 2, or, as in Fig. 3, the rod 1 is rotated as it is drawn horizontally below the melt 2. The core 1 may be of quartz glass doped with TiO 2  and the glass melt may be pure quartz glass, the coating taking place under reduced pressure.
Patent GB-375606-A (GB)
Title: Scrapers for garden and like rollers
IPC: A01B29/02
Filed: 1931-08-26
Abstract: 375,606. Scrapers for garden &c. rollers. SCOFFIN & WILLMOTT, Ltd. and SCOFFIN, S. A., Ironcrete Works, Abbey Road, Stratford, London. Aug. 26, 1931, No. 24051. [Class 108 (ii).] A scraper for garden and like rollers includes a member 3 of channel section having two scraping edges and spring means for urging the edges towards the roller x. In one form, screws 6 pass through a bar 8 on the roller handle frame 9 and engage in a bar 5 secured e.g. welded to the member 3. Helical springs 10 are interposed between the bar 8 and the member 3 and a spring washer may be inserted under the head of the screw 6.
Patent GB-199989-A (GB)
Title: Improvements relating to electric switches
IPC: H01H13/12
Filed: 1922-09-05
Abstract: 199,989. Lucas, O., and Handley, F. Sept. 5, 1922. Press-button switches particularly for use with the electric horn on a motor vehicle comprise a flanged casing k enclosing a base a on which two terminal plates b are secured by means of the terminal posts c. Spring contact plates g are formed integral with or secured by the terminal plates, the contact plate in connection with one terminal plate overlying the other terminal plate so that when both contact plates are depressed simultaneously by a straight depression of the actuating button j, the terminal plates are connected together. An oblique pressure on the button depresses one or other of the contact plates. An upstanding ridge i on the base serves to separate the terminal plates.
Patent GB-899344-A (GB)
Title: Retaining pin for telescoped parts
IPC: F16B19/00
Filed: 1960-07-11
Abstract: 899,344. Cotters. CATERPILLAR TRACTOR CO. July 11, 1960 [Aug. 3, 1959], No. 24075/60. Class 89(2). [Also in Group XXI] A retaining means for holding telescoped parts together e.g. a hardened tip 11, and an earth working tool 10, comprises a two piece pin, each piece having a semi-cylindrical body 14, bent at 15, and enlarged heads 16 which may be chamfered at 20. One part of the pin is inserted in a cylindrical bore 17 in the part 10, and an elongated bore 18 in the tip. The second part is then driven into the bore, thus locking the pin due to the resilience of the latter.
Patent GB-461902-A (GB)
Title: Improvements in binders for periodicals and the like
IPC: B42F11/02
Filed: 1935-08-28
Abstract: 461,902. Binders for periodicals. MODERN BOOKBINDERS, Ltd., and HULL, W. Aug. 28, 1935, No. 24082. [Class 146 (i)] In a binder 1 for periodicals and the like of the kind in which the periodicals 6 are secured by means of wire rods 5 engaging in the folds, the rodretaining device at each end of the binder is provided with a rodreceiving slot or groove of a width equal to or slightly greater than the rod diameter and arranged so that a substantial length of each rod-end lies against or close to the wall of the slot nearest the back of the binder. The resistance of each rod to bending is thus increased and removal of the wires 5 from the grooves is rendered more difficult. In one form, Fig. 2, the retaining-device 3 is in the form of a bar of wood, metal, or synthetic resin having a groove 4 with a depth lengthwise of the rods approximately equal to the length of rod to be accommodated therein and open at the ends for the insertion of the rods, the width being such that the rods are sliding fits therein. In modified arrangements, each retaining device is formed by bending a piece of sheet-metal 7, Fig. 7, into channel-section with the end 8 substantially parallel to the front wall 9, the slot 11 being formed close to the inturned end 8, which constitutes the inner wall of the slot. The space between the parts 8, 9 is equal approximately to the rod diameter in the form shown but may be greater than this, and one or both of the parts 8, 9 may be parallel to the back. Where the parts 8, 9 are inclined to the back, Fig. 7, the rod-ends are bent correspondingly to increase the resistance to their removal. The rod 5 may have cranked parts 17, Fig. 2, for engaging the folds of periodicals bound by means of staples 15. Instead of a continuous groove 4, a number of short grooves may be employed or separate holes for each rod provided.
Patent GB-1176880-A (GB)
Title: Multivibrator Capacitor Microphone Systems
Inventor: MERRICK JAMES WALTER
IPC: H03F3/183
Filed: 1967-05-24
Abstract: 1,176,880. Capacitor microphone circuits; pulse modulation circuits. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 24 May, 1967 [26 May, 1966], No. 24089/67. Addition to 1,148,221. Headings H4J and H4L. In a multivibrator capacitor microphone system comprising a plurality of astable multivibrator circuits 60, each as claimed in any of claims 1 to 3 or 7 of Specification 1,148,221, such multivibrator circuits 60 are coupled in parallel to the input of a low-pass filter 30 through individual resistors 61 and the output of the filter 30 is applied to an operational amplifier 62. Each resistance 61 has a value approximately equal to XR, where R is the resistance of filter 30 and X is the number of circuits 60. This ensures that the output of filter 30 has the same amplitude when X circuits 60 are used as if only a single circuit 60 were. used. The resistances 61 may be varied to compensate for slight differences between individual microphones. For transmission over distances, the combined outputs of the resistances 61 may be transmitted to a remote filter 30 and amplifier 62.
Patent GB-791666-A (GB)
Title: Improvements in or relating to method of and apparatus for producing a blank for drawn cylinders
IPC: B21D22/20
Filed: 1955-08-22
Abstract: 791,666. Forging; stamping. NORRISTHERMADOR CORPORATION. Aug. 22, 1955 [Aug. 23, 1954; April 28, 1955], No. 24112/55. Class 83 (4). A method of producing a blank for deep drawing comprises confining a metal blank having a plurality of corners, within a cylindrical die having a diameter slightly larger than the diagonal of the blank, applying to said blank a cylindrical punch mating snugly within said die and forcing said blank into approximately circular shape. In an embodiment a square blank 16 is placed within a cylindrical die 18 and a cylindrical punch 19 provided with four arcuate relieved portions 20 upsets the blank so that the metal flows from the corners 17 towards the sides 21 and forms an approximately circular blank having raised areas 22 (Fig. 5) which strengthen the edge and prevent folding during subsequent cupping. Thus, the formation of any tension in the sides 21, which tends to cause tears or fractures, is prevented. Finally, the formed blank is cupped as shown in Fig. 7 and then subjected to a series of deep drawing operations. The present method cold works the blank to such extent that only a very brief annealing process, e.g. one or two hours, is necessary prior to deep drawing. The reliefs may be formed on the die or on both the punch and the die. Also the forming of the blank may be incorporated in a pre-cupping step by a punch and die shown in Fig. 15, the reliefs being provided on the punch. The spherical faces 33, 34 of the punch and die may alternatively be flat in the centre and conical at the edges.
Patent GB-1425608-A (GB)
Title: Catoptric lens arrangement
IPC: G02B17/06
Filed: 1973-05-21
Abstract: 1425608 Catoptric lenses RAYTHEON CO 21 May 1973 [3 July 1972] 24171/73 Heading G2J A catoptric lens arrangement for combining the energy from a number of high-powered lasers so as to form an "optical bottle" intended for the production of thermonuclear fusion comprises a plurality of catoptric lens assemblies of the "confocal" type disclosed in Specifications 1412954 and 1412955, i.e. of the type comprising mirrors having reflecting surfaces corresponding to the curved surfaces generated by rotating selected quadratic conic sections about the assembly axis, a focal circle (i.e. the resulting lens of a focus of the quadratic conic section) of one mirror being made coincident with the focal circle of another mirror. The catoptric lens arrangement comprises reflective lens assemblies 11, 11a, having individual, different assembly axes both spaced from a common lens axis of the arrangement, each lens assembly comprising a plurality of mirrors 13, 15 disposed along the assembly axis and "confocally" arranged so as to focus energy directed towards an input focal point F 1  at an output focal point F2 lying on the assembly axis, the mirrors 13, 15 of each lens assembly being generated by rotation about the assembly axis through less than 360 degrees of generating arcs of quadratic conic sections, the mirrors of all the assemblies being supported relative to each other, so as to maintain the output focal points of the assemblies in a predetermined relation to each other, by a common supporting structure which enters the regions where the mirrors are incomplete, by virtue of the aforesaid rotation of lens than 360 but does not extend into the paths of the radiant energy to and from the assemblies and between the mirrors of the assemblies.
Patent GB-721573-A (GB)
Title: Surgical dressings
IPC: A61L15/20
Filed: 1952-09-26
Abstract: A surgical adhesive dressing comprises an absorbent pad carried by an adhesive support, and a protective fabric strip which has been impregnated with an aqueous dispersion of a modified starch containing in solution an aluminium salt in an amount corresponding with at least 0.25 per cent aluminium by weight of the starch.  The starch may be potato or corn starch treated with enzymes, acids, oxygen or chlorine.  The treatment may be at elevated temperature. The aluminium salt is water-soluble and may be the acetate, chloride or sulphate.  The amount of salt present in the dispersion may be from 0.25 to 2.5 per cent by weight of aluminium and the dispersion may be applied at a pH between 3.5 and 6.8, adjustment being made with an alkali or acetic or phosphoric acid, and at a temperature between 100 DEG  and 190 DEG  F. The fabric may take up from 10 to 200 per cent of the starch composition based on the weight of the fabric.ALSO:A size used to impregnate a protective fabric strip forming part of a surgical dressing comprises an aqueous dispersion of a modified starch containing in solution an aluminium salt in an amount corresponding to at least 0.25 per cent and preferably not more than 2.5 per cent aluminium by weight of the starch.  The modified starch may be potato or corn starch which has been treated, e.g. at elevated temperature, with enzymes, acids, oxygen or chlorine.  The aluminum salt may be the acetate, chloride or sulphate.  The size may be applied to the fabric at a pH between 3.5 and 6.8, adjustment being made with an alkali or acetic or phosphoric acid.ALSO:A surgical adhesive dressing comprises an absorbent pad carried p  by an adhesive support and a protective fabric strip which has been impregnated with an aqueous dispersion of a modified starch containing in solution an aluminium salt in an amount corresponding with at least 0.25 per cent. aluminium by weight of the starch.  The starch may be potato or corn starch treated with enzymes, acids, oxygen or chlorine.  The treatment may be at elevated temperature. The aluminium salt is water-soluble and may be the acetate, chloride or sulphate.  The amount of salt present in the dispersion may be from 0.25 per cent. to 2.5 per cent by weight of aluminium and the dispersion may be applied at a pH between 3.5 and 6.8, adjustment being made with an alkali or acetic or phosphoric acid, and at a temperature between 100 DEG F. and 190 DEG F.  The fabric may take up from 10 to 200 per cent. of the starch composition based on the weight of the fabric.
Patent GB-443488-A (GB)
Title: Improvements in electric rotary switches
IPC: H01H19/62
Filed: 1934-08-23
Abstract: 443,488. Control systems for consumption apparatus. DIAMOND H SWITCHES, Ltd., Gunnersbury Avenue, Chiswick, London.-(Hart, G. H. ; West Hartford, Connecticut, U.S.A.) Aug. 23, 1934, No. 24353. [Class 38 (iv)] [See also Group XXXVII] A rotary switch, specially suitable for controlling electric heaters by connecting up the resistances in series or in parallel or singly &c. comprises a shaft 12 carrying cams 32, 33 engaging spring contacts 24, 30 and moving them into engagement with fixed contacts. In the form shown the shaft 12 has five positions and the cam 32 engages two spring contacts arranged on opposite sides of the shaft and the cam 33 engages one spring contact. The switch is connected up to three elements of a heater, Fig. 8 (not shown), and has an off position, a position with three elements in parallel, a position with two elements in parallel, a position with one element only energized and a position with all three elements in series.
Patent GB-1212862-A (GB)
Title: Thrust washers for use with helical springs
Inventor: MARTIN REX
IPC: F16D7/10
Filed: 1967-05-26
Abstract: 1,212,862. Springs. JOSEPH LUCAS (INDUSTRIES) Ltd. 25 April, 1968 [26 May, 1967], No. 24609/67. Heading F2S. For use with a helical spring of conventional form-viz. one in which the helix angle of the end convolutions is somewhat less than that of the major portion of the spring-a thrust washer 51 has three projections 54, 55, 56 of unequal height above the plane of the washer such that their extremities lie substantially on a helical path of the same form as that of the end convolution of such a spring. The angular disposition of the projections about the washer axis perpendicular to said plane is such that they lie on a circle in this plane with each one on the major arc defined by the other two. Preferably the highest projection 56 is slightly longer than would be necessary to just contact the end convolution without deforming it when the other two rest on the end convolution with the axis of the washer coincident with the axis of the spring. In this way the contacted point on the end convolution which is furthest along the spring is slightly over-loaded in comparison with the other points of contact: this counteracts the tendency of such a spring to bend under load. A spring fitted with such a washer is described with respect to Figs. 1 and 2 (not shown) and is embodied in a vehicle ignition switch in which the spring provides a compression-torsion load on a rotatable contact bearing disc.
Patent GB-1308199-A (GB)
Title: Seal ring assemblies
IPC: F16J9/06
Filed: 1970-05-21
Abstract: 1308199 Seals for pistons A-T-O Inc 21 May 1970 [22 May 1969] 24648/70 Heading F2T A seal ring assembly 10, e.g. for a piston 13, comprises a first split-ring 16, e.g. of spring steel, which fits in a groove 15 of the piston 13, see also Fig. 1 (not shown), and a second splitring 17 of thermosetting plastics which fits in the groove 15, in contact with the first ring 16 and with the surface, e.g. of a cylinder 12. The rings 16, 17 are formed in an expanded position to maintain a sealing force in operation, the steel ring 16 being about 0À060-0À065 inch thick, while the plastics ring 17 is about 0À375- 0À380 inch thick and 0À485-0À495 inch in axial width. The plastics material may be nylon, possibly including about 25-30% glass fibres and 5% molybdenum disulphide as a filler.
Patent GB-1010230-A (GB)
Title: Sonic spray nozzle
IPC: F23D11/10
Filed: 1963-06-21
Abstract: 1,010,230. Whistles. ASTROSONICS Inc. June 21, 1963 [July 9, 1962], No. 24684/63. Heading G5J. [Also in Division B2] A spray device comprises a sonic generator, provided with a cavity resonator 70 having side walls 72 terminating in a shoulder 74 and an air inlet pipe 12 terminating in a tapered nozzle 60 directed towards said cavity, and a plug member 48 in the pipe 12 provided with an axial liquid supply bore 52 and at its end with a plurality of radial apertures 78 communicating with said axial bore. Air under pressure introduced into the pipe 12 is emitted as a supersonic jet stream from the nozzle 60 and converted into sonic waves of compression and rarefaction by the cavity resonator 70. The outer surface 35 of the nozzle 60 provides a deflecting surface for the high velocity sonic waves generated by the resonator and the configuration of the surface is such that a low pressure area is formed adjoining the apertures 78 so that liquid emerging from the apertures is drawn into the downwardly reflected sound field. The high intensity sonic wave action operating on the air molecules causes turbulence resulting in atomization of the liquid into a micromist. The angle of diffusion may be varied by adjusting the distance between the nozzle and the resonator, Figs. 3 and 4 (not shown).
Patent GB-174665-A (GB)
Title: Improvements in or relating to the construction of internal walls of buildings
IPC: E04B2/28
Filed: 1920-08-26
Abstract: 174,665. Airey, E., (trading as Airey & Son, W.). Aug. 26, 1920. Reinforced block-work walls; double walls.- Internal walls are formed of a single thickness of precast concrete slabs and piers which are cast in situ. Rods d, Fig. 2, lying in grooves in the horizontal edges of the slabs extend into or across. the piers g and are secured to vertical rods in the piers by eyes k, Fig. 12, or by a'bend i and lashing j, Fig. 10. The vertical edges of the slabs may be bevelled in opposite directions in alternate courses. Such walls are joined to the external double walls either by forming the piers o of the latter in situ with the edges of the slabs a, Fig. 16, projecting into the external piers, or by an inner extension o', Fig. 18, formed on theexternal pier and containing a vertical bar h bonded to the bars d. Specifications 161,631 and 169,729, [Class 87 (ii), Moulding plastic &c. substances], are referred to.
Patent GB-1395532-A (GB)
Title: Pneumatic tyres
IPC: B60C9/02
Filed: 1972-05-25
Abstract: 1395532 Pneumatic tyres MICHELIN & CIE (COMPAGNIE GENERALE DES ETABS MICHELIN) 25 May 1972 [27 May 1971] 24795/72 Heading B7C A radial pneumatic tyre comprises a breaker composed of two groups of parallel cord plies, the plies of the two groups alternating and the edges of the plies in each group being so stepped that the edges of a ply are nearer the midcircumferential place x-y of the tyre the nearer the ply is to the tread. The tread has two circumferential grooves, the centre lines of which are situated at a distance from the plane x-y between the distances from that plane of the edges of the two breaker plies whose edges are nearest that plane. The cords of the ply 7 make an angle of 70 degrees with the plane. The cords of the plies 8 to 11 which are of metal make an angle of 26 degrees with the plane, the cords of the plies 9 and 11 crossing the cords of the plies 8 and 10. Transverse grooves 19, which are equal in width to circumferential grooves 13, 14, define blocks 20, and grooves 22 define blocks 23 inclined at 45 degrees to the plane x-y. In an alternative embodiment (Fig. 4, not shown), grooves (33) extend from each circumferential groove partially across zone 17. The grooves (33) may be parallel, or arranged in "herring-bone" fashion. The grooves may be zig-zag or sinuous.
Patent GB-711238-A (GB)
Title: Process for the production of macromolecular oxidised polyoses and polyose-containing substances
IPC: C08B15/04
Filed: 1951-10-24
Abstract: Cellulosic material is oxidized with nitric acid (preferably of specific gravity 1.4), at a temperature not above 25 DEG C., in the presence of a reducing substance which can liberate oxides of nitrogen from the acid but which contains no nitrite radicals. The reducing agent may be a sulphite (including meta- and hydro-sulphites), a thiosulphate, a sulphide, arsenious oxide, tin, stannous salts, di-, tri-, or poly-saccharides (e.g. sucrose, lactose and raffinose) or a gas such as coal gas, which may be bubbled through the reaction mixture.  Small quantities of such di-, tri, or polysaccharides may be produced by the hydrolysis at a raised temperature of part of the polyose starting material. Cellulosic materials treated include cotton wool, flax scutchings and wood dust. The product contains a high proportion of carboxyl groups, is relatively undegraded, and is useful in soaking, washing or cleaning processes and for cation exchange. Specifications 531,283, 605,367, 653,702, [Group III], and 709,941 and U.S.A.  Specification 2,256,391 are referred to.
Patent GB-1005376-A (GB)
Title: Improvements in or relating to the production of 3-alkylmercapto-phenthiazines
Inventor: RENZ JANY
IPC: C07D417/06
Filed: 1962-06-29
Abstract: In a process for the preparation of 3-methylmercapto - 10 - [21 - (111 - methyl-piperidyl - 211)-ethyl-11]-phenothiazine and its acid addition salts, a compound of the general formula <FORM:1005376/C2/1> in which Hal is a chlorine or bromine atom, is cyclized in the presence of (i) a chlorinated aromatic hydrocarbon containing at least 2 chlorine atoms in the molecule or tetralin and of (ii) sodium or potassium hydroxide, and, when it is desired to form an acid addition salt, salification is effected.  The presence of copper powder is advantageous in effecting ring closure. Specification 863,552 also is referred