baber/WOPTO huggingface dataset:
Patent GB-1473016-A (GB)
Title: Chemical composition comprising a colour former
IPC: C09D11/00
Filed: 1975-01-23
Abstract: 1473016 Composition comprising a colour former CIBA-GEIGY AG 22 April 1975 [23 Jan 1975] 2928/75 Headings C4A and C4P [Also in Division D2] A composition comprises a dispersion of a colour former in a mixture of water and a water-miscible organic solvent for the colour former. The organic solvent may be acetone, methoxyethanol, ethoxyethanol, dimethyl formamide or dimethyl sulphoxide. The composition may also contain a polymer latex, e.g. an acrylic latex, starch and a dyestuff or pigment. Suitable colour formers are lactone, spyropyran or related, leuco or metal complex forming colour formers. Preferably the colour formers are azo compounds of specified formulae. An imageproducing system comprises a paper substrate impregnated or coated with the composition and a carrier material impregnated with a solution of an organic acid in a weakly volatile high boiling solvent having a boiling point of at least 150 C. The paper must be neutral or alkaline sized. The carrier material may be a fabric, a paper material, a felt or fabric pad or a felttipped pen. The composition may be prepared by dissolving a colour former in a watermiscible organic solvent and stirring the resulting solution into water. Azo compounds suitable for use as the colour former of the composition may be prepared by dissolving the primary aromatic amine in hydrochloric acid and water, cooling the solution to 0 C. with ice, adding sodium nitrite beneath the surface at such a rate that a slight excess of nitrous acid is always present, adding the reaction mixture when diazotization is complete to a solution or suspension of the secondary amine and sodium hydrogen carbonate in water at 10 C., stirring the reaction mixture and allowing it to reach room temperature, continuing stirring and filtering, washing and drying the product.
Patent GB-535280-A (GB)
Title: Electric insulators for transposing the conductors of transmission lines
IPC: H01B17/24
Filed: 1940-02-16
Abstract: 535,280. Insulators. STANDARD TELEPHONES & CABLES Ltd., Feb. 16, 1940, No. 2981. Convention date, Feb. 21, 1939- Addition to 484,441. [Class 36] An insulator for transposing the conductors of telephone and other transmission lines so as to reduce inductive effects therein, comprises a block 10 of glass or other material having integral arms 11 .. 14 in which are moulded wires 19, 20 that cross over one another without touching, the arms being provided with recesses, as 18, to permit movement of the projecting wire-ends which are secured to the conductors proper by means of metal sleeves 34 applied by rolling or compression. The insulator is secured to a cross-arm by a U-bolt 22 engaging grooves on the insulator-top, and is further located by a boss on its base engaging a recess in the cross-arm. In a modification which obviates cutting the conductors, the wires 19, 20 are replaced by tubes through which the conductors can be drawn, Fig. 5 (not shown)
Patent GB-1427671-A (GB)
Title: Multiple reflector single speed unidirectional scanning device
IPC: G03B27/50
Filed: 1974-01-22
Abstract: 1427671 Line-by-line scanning FUJI XEROX CO Ltd 22 Jan 1974 [29 Jan 1973] 02989/74 Headings G2A and G2J A scanning device for a line-by-lineelectrophotographic copier comprises a rotary shaft 3 which is driven unidirectionally at a constant speed, pairs of radially extending transparent holders 4 each having a slot 6 with a mirror-retaining clip at its outer end, and mirrors 9 each having cushion members at each end and each being slidable from a respective pair of holders 4 at one side of shaft 3 to a respective pair of holders 4 at the opposite side of shaft 3 through a respective slot 7 in shaft 3. A pair of actuators (not shown), release each mirror in turn from its respective pair of clips  after its scanning is completed and cause it to shuttle across shaft 3 with the assistance of gravity.
Patent GB-510268-A (GB)
Title: Improvements in or relating to mashing or straining apparatus
IPC: A47J19/00
Filed: 1938-01-31
Abstract: 510,268. Strainers; mashing &c. devices. ETABLISSEMENTS SIMON & DENIS SOC. ANON. Jan. 31, 1938, Nos. 3032, 3033 and 3034. Convention dates, Oct. 27, 1937, Nov. 20, 1937 and Dec. 22, 1937. [Class 46] [Also in Group VI] In apparatus for mashing and straining vegetables &c. of the type in which a rotary crushing member in the form of a propeller vane 2 makes close contact with the perforated bottom 5 of the strainer, the perforated bottom is formed with one or more circular depressions or ridges and the edge of the vane is formed to correspond so that it contacts with the whole surface of the bottom. The Figures show in cross-section various forms which the bottom may take. As shown in Fig. 8 supplementary projections 14 in the form of saw teeth are provided at the top of the ridges. The bottom may be flat or convex. Specification 371,714 is referred to.
Patent GB-572414-A (GB)
Title: Improved manufacture of soap from sperm oil
IPC: C11D13/02
Filed: 1943-02-24
Abstract: 572,414. Soap. ABBEY, A. (Compania Industrial Soc. Anon.). Feb. 24, 1943, No. 3052. [Class 91] Soap is made from sperm oil in a single step by heating a mixture of the oil and anhydrous alkali to a temperature of about 270-280‹C. so as simultaneously to saponify the fatty acid esters and to transform the fatty alcohols into fatty acid soap, with agitation in vacuo and continuing the heating under the pressure generated by the liberated hydrogen gas during the ensuing reaction. The oil used may be raw, refined, or partially hydrogenated sperm oil. Sodium, potassium, and calcium hydroxides are specified and are preferably used in a finely divided form. Specification 370,769 is referred to.
Patent GB-674355-A (GB)
Title: Collapsible dispensing container
IPC: B05B11/04
Filed: 1950-02-07
Abstract: 674,355. Collapsable containers; hand powder-distributer. SQUEEZ-EASY DISPENSER & CONTAINER CO. Feb. 7, 1950. [June 1, 1949]. No. 3145/50. Classes 18 and 66. [Also in Group XXIX]. A collapsable container 10 made of rubber, polyethylene, nylon, or vinyl resins &c. e.g. for dispensing powders, or liquids as atomized jets, has a filler plug 13 screwed into an integral neck 11 through which may pass an outlet tube 16 immersed at 17 in the liquid &c. 19, and an air duct 20 for atomizing, a thin lip 21 sealing the container when the cap 22 is screwed down. A crossridge 14A at the top of the cap 22 mates with a groove 14 for removing the plug 13. In another form a metering chamber containing a moving ball is at the lower end of an outlet tube extending deep into the container and extended by a detachable, curved tube which may be stowed inside the cap.
Patent GB-657280-A (GB)
Title: Method and apparatus for trimming wrapped objects
IPC: B65B61/06
Filed: 1949-02-04
Abstract: 657,280. Packeting - machines. WING- FOOT CORPORATION. Feb. 4, 1949, No. 3176. Convention date, Sept. 11, 1948. [Class 94(i)] [Also in Group VIII] A method of wrapping comprises the steps of moving an article along a predetermined path, wrapping said article with opposed layers of material by pressing the layer's against each other and trimming the material around the article by means of a trimming mechanism guided by the article as it moves along its path. As shown in Fig. 2, two similar trimming mechanisms are mounted one on each side of the path of travel of the wrapped material. Each mechanism is provided with a heated cutting-element 15, Fig. 5 which is maintained at a suitable distance from the wrapped object 20 by means of a follower 10 to which the cutting element is secured, the follower being pivoted at 14 on an arm 5 pivoted to a fixed plate 7. Springs 9 and 13 keep the follower pressed against the side of the object 20.
Patent GB-1041868-A (GB)
Title: Process for the preparation of trimellitic acid imides
Inventor: MULLER GERHARD
IPC: C08G73/14
Filed: 1965-01-25
Abstract: Trimellitic acid imides are made by reacting trimellitic acid anhydride with at least an equivalent of a mono-, di- or tri-isocyanate under anhydrous conditions in the presence of an inert solvent at temperatures in the range 50-250 DEG  C.  A catalyst may be used to assist the reaction, e.g. anhydrous zinc chloride, tin-II-octoate, tin tetrachloride, ferric chloride, p-toluene sulphonic acid and tri-ethylenediamine. The isocyanate may be an aliphatic, alicyclic or aromatic compound and may carry halogen, alkoxy, azo, sulphone, sulphide, keto, cyano or ester substituent groups.  Examples relate to imides derived from phenyl isocyanate, hexamethylene diisocyanate, cyclohexane diisocyanate, naphthalene diisocyanate, diphenylmethane diisocyanate and the tris-isocyanate obtained by trimerization of toluylene-2,4-diisocyanate.
Patent GB-554705-A (GB)
Title: Wiper arm for windshield cleaners
IPC: B60S1/34
Filed: 1942-03-11
Abstract: 554,705. Windscreen cleaners. TRICO PRODUCTS CORPORATION. March 11, 1942, No. 3231. Convention date, March 15, 1941. [Class 138 (i)] A windscreen wiper 18 comprising a section 15 adapted to be connected to an operating shaft 12 and a wiper-carrying section 20 pivoted thereto and adapted to be moved to an inoperative position shown in dotted lines in Fig. 1 is constructed with means for locking the section 15 to the shaft 12 which is automatically released when the section 20 is moved to inoperative position. The locking means is formed as a flexible member 34 which may serve alone or in conjunction with a flexible member 30 to maintain the arm 28 carrying the wiper 26 pressed towards the screen, and the end of the member 34 is curved so as to engage against the end of a serrated enlargement 13 secured to the shaft 12 for receiving the correspondingly shaped hub 15 of the arm 19 so as to permit the arm to be placed in the required angular position. The member 34 thus prevents axial withdrawal of the hub 15. The section 20 is pivoted on trunnions integral with the hub, and the springs 30, 34 react upon an antifriction roller 32 on a pin 33 to press the arm towards the windscreen. When the wiper is moved to the position shown in dotted lines in Fig. 1 the member 34 is withdrawn from contact with the member 13 thus permitting withdrawal of the hub 15. In the position shown the springs 30, 34 tend to move the arm counterclockwise: The lock 34 may be replaced by a latch connected by a link to the arm 19.
Patent GB-1039341-A (GB)
Title: Improvements in or relating to coding equipment
Inventor: REEVES ALEC HARLEY
IPC: H03M7/30
Filed: 1963-01-25
Abstract: 1,039,341. Selective signalling. STANDARD TELEPHONES & CABLES Ltd. Jan. 24, 1964 [Jan. , 1963], No. 3250/63. Heading G4H. An analogue-to-digital converter is characterized in that it produces a floating-point output. The embodiment described, which is pure binary, also has the feature that a contracted floating-point representation is produced, this being derived from the normalized form by omitting the most significant " one " bit. Thus, for example, the normal floating-point representation 10-1101, where the dash separates the 3-bit exponent from the numerical component, becomes 010-101 in the contracted form. The contracted form is said to be particularly useful in communication systems. As described a conventional analogue-to-digital converter in which a sequence of comparisons is made between the input analogue voltage and a sequentially modified reference voltage is modified so that it produces an output indicative of the denominational position of the most significant " one " bit together with the three bits that follow the most significant " one " bit.
Patent GB-808716-A (GB)
Title: Method and apparatus for bending glass sheets
IPC: C03B23/027
Filed: 1957-01-30
Abstract: 808,716. Bending glass sheets. PITTSBURGH PLATE GLASS CO. Jan. 30, 1957 [Feb. 13, 1956], No. 3261/57. Drawings to Specification. Class 56. In a sectionalised glass-bending mould the upward thrust on the pivoted end sections, caused by the counterweights, is initially of large magnitude but this decreases as the glass softens and the mould closes. This is provided for by arranging that the counterweight arms are substantially horizontal when the mould is open, thus giving a large bending movement, but swing to inclined or almost vertical positions as the mould closes, thus reducing the bending moment.
Patent GB-1527432-A (GB)
Title: Hollow spheres
IPC: C08J9/32
Filed: 1976-01-28
Abstract: 1527432 Hollow composite bodies MINNESOTA MINING & MFG CO 28 Jan 1976 [29 Jan 1975] 03341/76 Heading C3C [Also in Divisions C1 and C4] A mass of hollow bodies, viz. rounded particles, e.g. spheres, is made by tumbling and heating a mixture of solidifiable liquid globules of a binder containing a volatile blowing agent and discrete free-flowing solid parting agent particles at least some of which are wetted by and at least partially adsorbed into the liquid globules during the tumbling, the heat serving to convert the globules to the hollow condition and solidifying the globules sufficient parting agent being present so that any globules uncovered by parting agent tumble against unabsorbed parting agent particles. In the Examples (1-23 and 25) hollow spheres were made from binder/parting agent mixtures which were diglycidyl ether of bisphenol A/ hollow glass microspheres, polycarbodiimide prepolymer/hollow glass microspheres, black rubber, aluminium oxide, kaolin, pecan shell, silica, perlite or potassium titanate particles, diisocyanate terminated tetramethylene oxide polyether/rubber particles, phenolic resin/hollow glass microspheres or methyl cellulose/ greystone fines. The spheres may be made in an apparatus 10 (Fig. 1) where parting agent particles are fed into a hopper 11 and binder material into 12 from where they are metered into a trough 13 and then travel to a pan 14 rotating about axis 15 and then flow into a rotating cylinder 17; 14 and/or 17 are heated, e.g. by heating blankets 19 and 20, to form the hollow spheres which are collected via screen 21 in container 23, excess parting agent being collected in 23 and the spheres may be postcured in oven 24. The spheres may consist of hollow microspheres 26 (Fig. 2 embedded in the walls of the sphere 25 or irregular parting agent particles 30 (Fig. 4) partially embedded in wall 31 of sphere 29. The spheres may be coated with a liquid sealing resin in an apparatus (Fig. 5, not shown).
Patent GB-451240-A (GB)
Title: Improved method of dyeing union goods containing cellulose ethers or esters
IPC: D06P3/82
Filed: 1935-02-01
Abstract: Cellulose esters or ethers and regenerated celluloses, dyeing; vat dyes, dyeing with; two or more specified types of dye in one bath, dyeing with.--Union goods containing a cellulose ester or ether and a cellulosic or animal fibre are dyed by simultaneously applying to the goods in one bath a sulphuric acid ester of a leuco vat dyestuff, e.g. a dyestuff sold under the trade names Soledon or Indigosol, and a dyestuff having affinity for the cellulose ester or ether sold under the Registered Trade Marks " Duranol " or " Dispersol," and thereafter developing the vat dyestuff colouration.  The following examples are specified: (1) A viscosecellulose acetate material is treated for 1 hour in an aqueous bath at 80 DEG  C. containing the sulphuric acid ester of leuco-dimethoxydibenzanthrone and 1-methylaminoanthraquinone, with gradual addition to the bath of sodium chloride, and the vat dyestuff is then developed by treatment for 5 minutes in a cold aqueous solution containing sodium nitrite and sulphuric acid, washing, soaping at 60 DEG  C. and drying.  (2) A viscose-cellulose acetate material is similarly dyed with the use of the sulphuric acid ester of leuco-5 : 7 : 5<1> : 7<1>-tetrabromindigo and benzene-azo-naphthalene-azo-phenol.  (3) A wool-cellulose acetate material is treated for 1 hour in an aqueous bath at 80 DEG  C. containing, the disulphuric acid ester of leuco 4 : 4<1>-dimethyl-6 : 6<1>-dichlorothioindigo and 1-nitroacridone, with gradual addition to the bath of sodium chloride, and the vat dyestuff is then developed by treatment for 10 minutes in an aqueous solution at 75 DEG  C. containing potassium persulphate and sulphuric acid, washing, soaping at 60 DEG  C. and drying.  Specifications 219,349, 284,376, and 285,104, [all in Class 15 (ii)], are referred to.
Patent GB-130634-A (GB)
Title: Improvements in and relating to Chain-track Vehicles.
IPC: B62D55/10
Filed: 1918-02-26
Abstract: 130,634. Caterpillar Tractors, Ltd., (Holt Manufacturing Co.). Feb. 26, 1918. Endless-track vehicles.-The truck sections are pivoted together and are so connected to the main frame that they can deflect considerably from their normal position to enable the tracks to follow depressions. In the form shown, the sections 13, 14 are pivoted together at 19, the rear sections 14 bearing on rollers 24 mounted on the frame 10. The front sections 13 carry the front idler wheels 17 and are centrally pivoted in spring-mounted bearings 16. Central springs 25 support the rear truck sections 14 in their normal position. The truck sections are fitted with flanges 44 which engage the undersides of the tracks and prevent sagging when the tracks are unsupported. A manually-operated hook 41 is provided for retaining the truck sections in their level position, and engages a hook 40 at the joint 19. The rear sections 14 may be pivoted by a spring-mounted bearing similar to the front section, the two sections being connected by links; or the main frame may be provided with a V-shaped block resting on the rear sections, and with plates which engage the flanges thereon.
Patent GB-1491942-A (GB)
Title: Electromedical lead assembly
IPC: A61N1/05
Filed: 1975-01-27
Abstract: 1491942 Electromedical lead MEDTRONIC INC 27 Jan 1975 3444/75 Heading A5R A first embodiment of electromedical lead (Fig. 1) comprises: an electrode 11; a body member 10 comprising an electrical conductor surrounded by a sheath of insulating body-inert material; and tines 12 extending from a location adjacent said electrode 11 for preventing inadvertant retraction of the lead. The lead may be provided with a longitudinally extending lumen so that it can be inserted with the aid of a stylet. The tines 12 are unrestrained and the lead is inserted into a vein with the tines extended. In an alternative embodiment (Fig. 7) the tines 12 are restrained against the body portion 10 during insertion by a shroud 31 and when the lead is in position a balloon 30 may be inflated via the stylet lumen to extend the tines 12. A further embodiment (Fig. 12) is inserted with the tines 12 restrained by a shroud 53 and when the lead is in position, pressure on the tip 11 by a stylet 55 causes a portion 55 of the body 10 to stretchthereby releasing the tines. A further embodiment (Fig. 9) has the tines restrained by a coiled portion 41 of a stylet 40 which is retracted to release the tines 12. A further embodiment (Fig. 8 not shown) has the tines restrained by a shroud which may be retracted by an attached line. The leads may be inserted with the aid of J-shaped stylets or applicator catheters to aid insertion into the atrium. The tines 12 may be made of silicone rubber or polyurethane and may be impregnated with carbon, borium sulphate or tantalum to render them X-ray opaque.
Patent GB-210293-A (GB)
Title: Improvements relating to guards for use in ring spinning and doubling frames
IPC: D01H1/241
Filed: 1923-02-06
Abstract: 210,293. Brown, A., and Tweedales & Smalley (1920), Ltd. Feb. 6, 1923. Guards for the tin rollers C of ring spinning and doubling frames comprise lengths of steam, water, or other sufficiently rigid tubing A supported on the the grooved lugs b of brackets B, to which they are secured by through bolts a<1>. The holes in the top of the tubes may be shaped to fit the squared parts a<2> of the bolt shanks. The brackets B have slots b<2> and are secured by bolts b<3> to plates d, which further have ribs or grooves d<2> to engage grooves or ribs on the brackets and are clamped by the bolts b<3> and bolts d<1> to the spring piece cross rail D. The abutting ends of two tubes may be supported by a grooved' plate or a bracket with a pair of oppositelyprojecting lugs.
Patent GB-575074-A (GB)
Title: Improvements in production of sulfene amides
IPC: C07D277/70
Filed: 1944-02-25
Abstract: Substituted sulphene amides are prepared by reacting a thiazyl 2-sulphene amide having an unsubstituted amide group with an amine having at least one hydrogen atom attached to an amine nitrogen atom and whose dissociation constant is greater than 1.8 x 10-5 at 25 DEG C.  The preferred amines are symmetrical branched open chain primary amines such as isopropylamine are the preferred amines, but other primary and secondary amines may be used such as piperazine or morpholine or polymethylenes may also be used.  The Specification contains an extensive list of suitable amines of which the following are typical: methyl amine, benzyl amine, cyclohexyl amine, ethanolamine, ethylene diamine and polyethylene polyamine.  The Specification also contains a considerable list of suitable thiazyl sulphene amides of which the following are typical: benzothiazyl-2-sulphene amide, 6-nitrobenzothiazyl sulphene amide, thiazyl-2 sulphene amide and 5-ethyl thiazyl-2-sulphene amide.  The reaction preferably takes place in the presence of a solvent such as methanol, formamide ether, dioxane, benzene, chlorbenzene and glycol monomethyl ether.  In examples, the following reactants are used: (1) and (2) benzothiazyl-2-sulphene amide and cyclohexylamine; (3) benzothiazyl-2-sulphene amide, and ethylamine; (4) benzothiazyl-2-sulphene amide and ethylene diamine; (5) benzothiazyl-2-sulphene amide and isopropylamine; (6) benzothiazyl-2-sulphene amide and benzylamine; (7) benzothiazyl - 2 - sulphene amide and morpholine; (8) benzothiazyl-2-sulphene amide and piperidine; (9) benzothiazyl-2-sulphene amide and diethylamine; (10) benzothiazyl-2-sulphene amide and dipropylamine; (11) benzothiazyl-2-sulphene amide and dibutylamine.  Specification 539,606 is referred to.
Patent GB-1441832-A (GB)
Title: Apparatus for measuring blood pressure
IPC: G01L7/00
Filed: 1973-08-23
Abstract: 1441832 Measuring blood pressure T ARONSON 23 Aug 1973 [10 Nov 1972] 3559/76 Divided out of 1441831 Heading A5K Blood pressure measuring apparatus comprises a non-elastic cuff cover C having a rectangular inflatable portion I and a fastening portion F, a rectangular bladder 1a within the inflatable portion I, cooperative fastening means M on the inflatable and fastening portions I, F, an arcuate prestressed resilient clip S between the bladder 1a and the cuff outer wall and substantially co-extensive with the inflatable portion I, a transducer within the cuff, means for inflating the bladder 1a, means for indicating detected pulses, and an electrical circuit responsive to the transducer output for energising the indicating means. The apparatus is identical with apparatus disclosed in the parent Specification 1441831.
Patent GB-374394-A (GB)
Title: Improvements in and relating to closures for bottles
IPC: B65D41/34
Filed: 1932-02-08
Abstract: 374,394. Capsules for bottles. HORN, J. Y., 80, West Nile Street, Glasgow. Feb. 8, 1932, No. 3704. [Class 125 (iii).] A metallic capsule for bottles &c. comprises a screw-threaded upper portion a and an oppositely screw-threaded lower portion f with an intermediate circumferential tearing strip b with a tab e. Lines of weakness c, d are provided on the edges of the strip.