baber/WOPTO huggingface dataset:
Patent GB-941085-A (GB)
Title: A process for the production of synthetic laminated threads
Inventor: HOFFMANN SIGFRID
IPC: D02J1/22
Filed: 1961-07-14
Abstract: Laminated threads are made by twisting together a plurality of bands of thermoplastic material, and drawing the resulting twisted threads. The bands, preferably 0.2-1 cm. wide, are cut from films of one or more thermoplastic materials including polyamides, polyesters, polyacrylonitrile, polyvinyl chloride, subsequently chlorinated polymers, polyethylene, polypropylene, polycarbonates, polyvinylidene chloride, polyvinyl alcohol, polyvinyl acetals, polyurethanes, polyvinylidene cyanide, polystyrene, polytetrafluoroethylene, and co-polymers.  The films, made by conventional methods, may be stretched, laminated, dyed, matted or given a water-repellent or antistatic finish. Embossing, calendaring or the application of heat, pressure or swelling agents to the film before or after slitting into bands may be used to give threads of special structure.  Hollow threads, made by coiling the bands on a mandrel, may be filled with a powdered composition e.g. a powdered urea-formaldehyde condensation product or a powdered water-insoluble salt such as barium sulphate or viscous solutions of e.g. cellulose, casein, or cellulose xanthate. Hollow threads may be given an oval or rectangular cross-section before or during stretching by suitable squeezing means.  The twisted threads are drawn as extensively as possible, e.g. 25-500 times their length in one or more stages. Before or during drawing, the threads may be heated.  Metallised threads may also be produced.  In Example 1, a stretched polycaprolactam film, about 20 microns thick, is slit into strips 0.5 cm. wide, which are twisted on a cotton flyer.  The twisted threads are then drawn about 100 times in a plurality of stages some of which are heated.  By this process improved properties such as resistance to wear and creasing may be imparted to fabrics made from the threads.  Normally water-repellent fibres may also be made hydrophilic.  French Specification 1,060,497 is referred to.
Patent GB-224877-A (GB)
Title: Improvements in electron discharge devices
IPC: H01J1/18
Filed: 1924-10-27
Abstract: 224,877. British Thomson-Houston Co., Ltd., (Assignees of Nolte, H. J., and Prindle, R. B.). Nov. 13, 1923, [Convention date]. Vacuum tubes. - A c a t h o d e structure which comprises a pedestal 11, Fig. 1, of refractory metal such as tungsten, carrying an insulating anchor 14, is supported solely by the two leads 5, 6. The pedestal is clamped to the leads 5, 6 by metal p l a t e s 12 separated by mica and secured together by wire 13. The anchor consists of a quartz sleeve grooved to receive bands 15, Fig. 2, of refractory metal such as molybdenum, in which are held hooks 17 for the bights of the filaments 19, 20. A plate 22 welded to the pedestal is formed with a, lug 23 engaging with the anchor to prevent rotation. The filaments are connected in series by welding the ends to the leads 5, 6 and to a cross-piece on the pedestal. The leads are joined to cones 7 sealed into a re-entrant glass stem 4, and are provided with shields 9 for preventing ionic bombardment of the seals. Quartz sleeves 8 are mounted around the leads, and a glass sheath 10 surrounds the stem 4.
Patent GB-736093-A (GB)
Title: Steroid ketone adducts
IPC: C07J53/00
Filed: 1952-10-13
Abstract: The invention comprises 5 : 7-pregnadien-3 : 11 : 20-trione-5 : 8-maleic adducts of the formula: <FORM:0736093/IV (b)/1> wherein A is the adduct radical of maleic acid, maleic anhydride or diesters of maleic acid containing from one to eight carbon atoms, inclusive, in the esterifying groups; together with a process for their preparation by heating the corresponding 12-bromo derivatives with a metal dehalogenation agent in an inert organic solvent.  Specified esterifying groups are methyl, ethyl, propyl, isopropyl, butyl, amyl, heptyl, octyl, benzyl, cyclopentyl and cyclohexyl, which may contain methoxyl or hydroxyl substituents.  In examples: (1) 3 : 11 : 20 - triketo - 12 - bromo - 5 : 7 - pregnadien-5 : 8-maleic anhydride adduct is refluxed in acetone with deactivated Raney nickel to yield 3 : 11 : 20-triketo-5 : 7-pregnadien-5 : 8-maleic anhydride adduct. This compound is also prepared from the 12-bromo derivative by treatment with zinc dust and acetic acid; sodium iodide and ethanol; magnesium and acetic acid; zinc dust and acetamide.  (2) 5 : 7 - Pregnadien - 3 : 11 : 20 - trione - 5 : 8-maleic acid adduct is similarly obtained from the corresponding 12-bromo compound, and also by acid hydrolysis of the anhydride obtained in (1).  (3) The maleic acid adduct from (2) is esterified with diazomethane to give 5 : 7 - pregnadiene - 3 : 11 : 20 - trione-5 : 8-dimethyl maleate adduct. Other esters are similarly prepared.  12 - Bromo - 5 : 7 - pregnadien - 3 : 11 : 20-trione-5 : 8-maleic anhydride adduct (from which the corresponding acid and its di-esters are obtained), is prepared from 9-hydroxy-5 : 7-pregnadien - 3 : 11 : 20 - trione - 5 : 8 - maleic acid monomethyl ester 9-hydroxy lactone by treatment with hydrogen bromide and acetic anhydride.  The above lactone is obtained by chromic acid oxidation of 3b  : 9 : 11-trihydroxy-5 : 7 - pregnadien - 20 - one - 5 : 8 - maleic acid monomethyl ester adduct 9-hydroxy lactone.  This compound is obtained from 3b -acetoxy-5 : 7 : 9(11) - pregnatrien - 20 - one - 5 : 8-maleic anhydride adduct by treatment with hydrogen peroxide to produce 3b -acetoxy-9 : 11-oxido - 5 : 7 - pregnadien - 20 - one - 5 : 8-maleic anhydride adduct, which is treated with stannic chloride and acetic anhydride, the resultant 3b : 9 : 11 - triacetoxy - 5 : 7 - pregnadien - 20 - one - 5 : 8 - maleic anhydride adduct hydrolysed with alkali and the trihydroxy compound lactonized and finally methylated with diazo methane.
Patent GB-1040231-A (GB)
Title: Improvements in or relating to time-base circuits employing transistors
Inventor: ATTWOOD BRIAN ERNEST
IPC: H03K4/72
Filed: 1962-07-05
Abstract: 1,040,231. Transistor saw-tooth wave generators. MULLARD Ltd. Feb. 21, 1963 [July 5, 1962], No. 25845/62. Heading H3T. In a transistorized field time base generator driven by charging and discharging a capacitor, stabilization of the voltage of the beginning of the stroke is effected by connecting the capacitor in a negative feedback path between the output emitter resistor and the input of a D.C. coupled amplifier and ensuring that the discharge is such that at the end of the flyback the capacitor voltage is still sufficient to cause the input transistor to immediately conduct. At the end of the stroke the blocking oscillator transistor T1 conducts, so discharging a capacitor C12 connected via the feedback path of amplifier to a substantially by-passed output emitter resistor R15A, R15B. The value of resistor R16 is so chosen that when T1 cuts off the residual charge in C12 when added to the voltage at the emitter of T3 is sufficient to cause the transistors to conduct and it is explained that the voltage across C14 will then automatically adjust itself such that the sawtooth wave starts at the point where the transistors just conduct. The embodiment incorporates or may incorporate a number of features of prior Specifications referred to, including the diode D1, the temperature stabilizing resistor R2, the addition of a circuit to derive a stable voltage from the output stage and the substitution of an S.C.R. for the blocking oscillator. The diode may be omitted if the connections of the top of R1 and the point B are transferred to the junction of winding Lb1 and a resistor connected to the collector supply rail (Fig. 3, not shown). The emitter capacitor C14 may be dimensioned to provide S correction of the output wave.
Patent GB-1314636-A (GB)
Title: Floatable boom and a method of manufacturing the same
IPC: E02B15/04
Filed: 1971-04-19
Abstract: 1314636 Floating booms SANERA PROJECTING AB 19 April 1971 [2 April 1970 4 Aug 1970 27 Jan 1971] 25854/71 Heading E1H A floating boom comprises a buoyant body in the form of a collapsible tube 13 and a dependent weighted skirt 14, the tube 13 being collapsed for storage purposes against the action of resiliently flexible strips 16a, 16b urged to adopt a circular profile by a tension spring 41. The tube 13 is divided by flexible partitions 20 into a number of compartments inflatable via valves 17. The tube 13 and skirt 14 may be formed from a single sheet of, e.g. plastics or rubber impregnated fabric, the partitions 20, strips 16a, 16b, and locating means therefor being attached to the sheet before and during formation of the tube 13, Figs. 4-6 (not shown). A number of bodies may be joined end to end by means of fastenings 25, 26, Fig. 3. In another embodiment, Figs. 8, 11, resilient strips 54, 55 are urged by tension springs 56 to adopt a substantially rectangular shape. Located within each spring coil is a stiff wire 68 attached at its lower end to the strips and of such a length that, when the strips adopt their rectangular shape, a fastening 67 pivotally attached to the upper end of the wire 68 projects through a hole 57 in the top of the strips and pivots to prevent collapse of the strips. Manual release of fastenings 67 enables the boom to be stored in the form of a roll.
Patent GB-1283510-A (GB)
Title: Apparatus and method for cooling hot gases
Inventor: PRUDHON FRANCOIS
IPC: F28C3/06
Filed: 1971-04-19
Abstract: 1283510 Cooling gases by direct contact with liquids PRODUITS CHIMIQUES PECHINEYSAINT-GOBAIN 19 April 1971 [2 April 1970] 25876/71 Heading F4K Apparatus for cooling hot corrosive gases, e.g. those resulting from the combustion of halogenated hydrocarbon effluents, comprises an outer shell spaced from an inner shell 1 formed of porous graphite to define two annular cooling-liquid chambers 8, 18 separated from one another by an annular seal 9. A first cooling liquid, e.g. water, supplied to chamber 8 through inlet 14, is introduced into the hot gas stream flowing through the inner shell via a series of apertures 13, and a second cooling liquid, e.g. dilute hydrochloric acic, supplied to chamber 18 through inlet 17 is introduced into the hot gas stream through an annular slot 16. The outer shell is made up of two sections 4, 5 joined together by bolts 12.
Patent GB-442604-A (GB)
Title: New or improved means for securing covering material to structural framework, particularly adapted for use in aircraft construction
IPC: F16B5/06
Filed: 1934-09-10
Abstract: 442,604. Stud-and-socket fastenings. HARLEY, F. B., 167, Frimley Road, Camberley, Surrey. Sept. 10, 1934, No. 25916. [Class 44] A stud fasteningapplicablegenerally, but particularly for securing covering material to framework, as in aircraft construction comprises a stud 1 with annular recess 3 carried by an attachment plate 2 and adap ted to engage registering holes in a plate 9 and coverplate 10. The stud is secured in the holes by spring jaws 6 engaging recess 3. The head of the stud may be conical &c. so that it may bo snapped into position. The spring is housed between plates 9, 10 and is secured by a rivet 11 passing through loop 4. The ends of the spring, which project so as to be accessible, are crossed at 7 and formed with bent up, spherical, or other finger-pieces 8 which, when nipped together, open the jaws 6. An aperture 18 is also provided so that a screwdriver or other tool may be inserted between the parts 5 of the jaws to open them. As shown, plate 9 is hinged at 12 to an attachment plate 14, this form being applicable to fastening cases, but modifications omitting the hinged plate are described for direct attachment and for securing to a cord or wire.
Patent GB-190560-A (GB)
Title: Improvements relating to spring mechanism
IPC: F16F3/04
Filed: 1921-09-30
Abstract: 190,560. Hill, G. T. R. Sept. 30, 1921. Arrangement of springs with mountings complete in themselves.-Two springs are interconnected through a crank &c. in such a manner that the force transmitted bv the mechanism is divided between the two springs, the force transmitted through the secondary spring decreasing as that transmitted through the primary spring is increasing. The parts may be so arranged that the force required to stretch the mechanism remains constant, or increases or decreases to a predetermined extent, during the major portion of its range of movement. The springs may be arranged parallel or at any angle to one another. In the arrangement shown in Fig. 1, the primary spring s' and the secondary spring s<2> are each anchored at one end and are interconnected at the other end by a bell-crank lever l<1>, l<2> pivoted to a shaft t. In a modification, the two springs are anchored to a link k, Fig. 2. to which the bellcrank lever is also pivoted. In another arrangement, two bell-crank levers l<1>, l<2> are pivoted to a link m, and the springs s<1>, s<2> are mounted as shown. Springs other than stretching springs may be employed.
Patent GB-504827-A (GB)
Title: Improvements in and relating to gas masks
IPC: A62B18/08
Filed: 1937-09-24
Abstract: 504,827. Gas - masks ; eye - pieces. ROMER, R. Sept. 24, 1937, No. 25938. Convention date, April 28. [Class 81 (ii)] [Also in Group XX] Gas-masks of the kind having a transparent face portion b carried by a face-contacting frame a are characterized in that the face portion is made from sheet material comprising a caoutchouc derivative containing chlorine particularly caoutchouc hydrochloride having chlorine content of 60- 70 per cent. Other portions such as a headcovering hood or fastening bands may also be made of the specified material. Union between the transparent material and other parts may be effected by heat and pressure and subsequent rapid cooling. Two or more layers of transparent material may be employed which layers may be secured together by heat and pressure, or may include fabric or wire reinforcements, or the material may be coated with ethyl or benzyl-cellulose varnish or other transparent heat-resisting and protective materials. The face-portion is preferably shaped to fit closely over the face, to minimize the dead space, and may carry a tilter-canister f direct or the canister may be carried by light metal straps k, which are secured to the frame a and to which the part b is adhesively secured. Eye-pieces c may be provided and may comprise light metal rings having sheet chlorinated caoutchouc stretched over them.
Patent GB-1178428-A (GB)
Title: Improvements in Catalyst Compositions
Inventor: GLADROW ELROY MERLE
IPC: C10G35/095
Filed: 1967-05-26
Abstract: 1,178,428. Hydrocarbon conversion catalysts. ESSO RESEARCH & ENG. CO. 26 May, 1967 [7 June, 1966], No. 25972/69. Divided out of 1,178,427. Heading B1E. [Also in Division Cl] A catalyst composition comprises a rareearth-metal containing natural or synthetic erionite having uniform pore openings of less than 6A. Rare earths are defined as elements of atomic number 57 to 71 inclusive, scandium and yttrium. They may be incorporated by base-exchange, preferably via the ammonium or hydrogen form. Mixtures of rare earths may be employed. The catalyst may also contain cadmium or zinc, and a hydrogenation component such as Co, Ni, Pt, Pd, Rn, Rh, Os, or Ir, in the form of free metal, oxide or sulphide or incorporated by ion-exchange. The catalyst may be sulphided before use and is useful for hydrocarbon conversion processes.
Patent GB-1270386-A (GB)
Title: Stabilisation of polyolefins
Inventor: HURLOCK RONALD JAMES
IPC: C08K5/3445
Filed: 1968-05-30
Abstract: 1,270,386. Stabilizing polyolefins. IMPERIAL CHEMICAL INDUSTRIES Ltd. 13 May, 1969 [30 May, 1968], No. 25981/68. Heading C3P. Polymers derived from α-olefins containing at least 3 carbon atoms are stabilized by incorporating a phenylimidazole of formula wherein R 1  and R 2  are each phenyl groups which may form part of a polynuclear system and R is a phenyl group substituted by a hydroxyl group or a group of formula and which may be further substituted by one or more halogen atoms or alkyl, aryl or alkoxy groups. Specified polymers are of propylene, butene-1, 4-methylpentene-1, 3-methylbutene- 1, 3-methylpentene-1, 3-methylhexene-1, 4- methylhexene-1 and copolymers thereof with pentene-1,hexene-1 and decene-1. Conventional stabilizers, e.g. organic sulphides, metal dialkyl dithiophosphates, metal dialkyl dithiocarbamates, trialkyl trithiophosphates, organic phosphites, phenols, 2-hydroxybenzophenones, benztriazoles and nickel ketoximes ; and other conventional additives may also be present. The stabilization may be effected by blending the polymer with solutions of the stabilizers e.g. inacetone/trichlorotrifluoroethane or ethanol/trichlorotrifluoroethane mixtures. Examples describe compositions of polypropylene and (1) 2 - (2 - hydroxyphenyl) - 1H - phenanthro- [9,10d]imidazole, 2 - (2 - hydroxy - 3 - methoxyphenyl) - 4,5 - diphenylimidazole, 2 - (2 - hydroxyphenyl) - 4,5 - diphenylimidazole, 2,2<SP>1</SP>- p-phenylene bis-(4,5-diphenylimidazole), 2-(3,5- di - t - butyl - 4 - hydroxyphenyl) - 4,5 - diphenylimidazole and 2 - (3,5 - di - t - butyl - 4- hydroxyphenyl) - 1H - phenanthro[9,10d]imidazole, with and without dilauryl thiodipropionate; and 4-methylpentene-1/n-decene-1 copolymer with 2-(2-hydroxyphenyl)-1H-phenanthro- [9,10d]imidazole.
Patent GB-159535-A (GB)
Title: Improvements in tobacco pipes
IPC: A24F5/00
Filed: 1919-10-23
Abstract: 159,535. Mody, F. W. Oct. 23, 1919. Tobacco pipes.-In tobacco pipes of the kind in which the bowl is formed or provided with a ledge or shoulder for supporting the tobacco so as to prevent the bottom layer from becoming saturated, the ledge d is inclined downwardly towards the exterior of the bowl. The lower chamber c may be arranged axially or eccentrically with respect to the upper chamber b. The ledge may be formed by the top of a plug e adapted to fill the lower part of the bowl. According to the Provisional Specification, the face of the ledge may be at right-angles to the inner face of the bowl or inclined downwardly therefrom; or the ledge may be formed by a metal or other thimble-like lining reaching about two-thirds down the bowl, or by a tube formed to two diameters extending to the bottom of the bowl; or the upper part of the bowl may be coned, the lower part being cylindrical; and washers with holes of varying diameter may be used to vary the width of the ledge.
Patent GB-443088-A (GB)
Title: Improvements in clockwork and other power-driven electric switches
IPC: G04C23/10
Filed: 1935-09-19
Abstract: 443,088. Clockwork actuation of switches. LANDIS & GYR AKT.-GES., 1, Hofstrasse, Zug, Switzerland. Sept. 19, 1935, No. 25993. Convention date, Sept. 28, 1934. [Class 38 (v)] A clock or electric meter or other apparatus drives through gearing a wheel 5 which in turn drives a wheel 10 mounted on a weighted arm 8 ; a fly 11 fixed to the wheel 10 and engaging a stop 12 prevents rotation of the wheel 10 about its axis, so that the effect of the rotation of the wheel 5 is to lift the wheel 10 and arm 8 bodily till the fly 11 is clear of the stop, whereupon the wheel 10 rotates through half a revolution until it is again brought to rest by the stop 12 and a crank 13 and pin 14 fixed to the wheel 10 cause the oscillation of a mercury tube switch 17 pivoted at 22. For this purpose the pin 14 engages a slot 15 in the carrier of the mercury tube switch. In moving from one position to the other, the mercury switch may momentarily close a circuit. Current is led to the contacts of the mercury tube by two spiral springs at opposite sides of the mercury tube which springs act in opposite directions on the tube.
Patent GB-297055-A (GB)
Title: Improvements relating to clutches
IPC: F16D11/06
Filed: 1928-09-12
Abstract: 297,055. Alibert, E. Sept. 13, 1927, [Convention date]. Clutches, positive.- A disc 1, Fig. 1, secured to the driven shaft of a machine, carries in an aperture 3 a cylindrical member 8, having on its inner face an eccentric pin 10, Fig. 2, projecting into an annular recess 18 in a loose driving pulley 13. A lever 9 on the outer face of the part 8 moves in a V-shaped recess 5 in the disc 1 and is normally held by a spring 12 against the lower face 7 of the recess, when the pin 10 lies in the path of a pin 16, Fig. 4, carried by the pulley 13. A stop 19, actuated by a pedal &c., may be moved to return the lever 9 to the upper face 6 of the recess 5 and declutch. Rollers 1, 17 are carried by the pin 10 or the pin 16 or by both pins.
Patent GB-1347569-A (GB)
Title: Automatic toilet bowl cleaner dispenser
IPC: E03D9/03
Filed: 1971-04-19
Abstract: 1347569 Dosing apparatus BRISTOLMYERS CO 19 April 1971 [17 Feb 1970] 26101/71 Heading B1C A device for dosing a flushing cistern, e.g. with cleanser or disinfectant comprises a container 1 for the liquid additive and an air-bell 7 which rises and falls with the water level. In its lowest position as shown additive fills the metering chamber 6, and is discharged through outlets 10 as the bell rises. A closure cap (20, Fig. 2 not shown) has a member (21) which maintains the projection. 11 in sealing engagement with the orifice 8 during storage and transport. The device may be suspended from the cistern wall by a slidable hook (15).
Patent GB-292818-A (GB)
Title: A fertilizer distributing element having means for regulating the quantity of fertilizer discharged
IPC: A01C15/18
Filed: 1927-10-03
Abstract: 292,818. Schmidt, W. Oct. 3, 1927. Manure distributers.-In fertilizer - distributing machines the fertilizers are distributed by means of an obliquely slotted endless band moving across the bottom of the fertilizer-box and made up of transverse bars connected together or to endless ropes or chains, the amount distributed being regulated by adjustment of the bottom plate of the box transversely of the endless band so as to vary the effective length of the slots through which the fertilizer is free to fall. The endless band passes round polygonal pulleys f, Fig. 3, having faces i corresponding to the bars e forming the band. It is driven from one of the travelling wheels so as to move along the bottom of the long box a, Fig. 12, above the adjustable plate b. An oblique slot d may be made in each of the bars or plates e, or the bars may be shaped as shown in Fig. 8 so as to form slots k between them. The bars e are made of sheet metal and may have broad eyes l to thread on endless ropes m, or narrow eyes for connecting them to endless chains. They may be connected directly together by means of slots p, Fig. 8, and hook-shaped tongues o. The polygonal pulleys f have grooves r to accommodate the endless ropes or chains or the hooks o.
Patent GB-1533835-A (GB)
Title: Sputum analysis method
IPC: C09K23/56
Filed: 1977-06-22
Abstract: 1533835 Preparing respiratory test sample for analysis J K and SUSIE L WADLEY RESEARCH INSTITUTE & BLOOD BANK 22 June 1977 26120/77 Heading G1B In the preparation of a sputum sample for pathogenic detection the sample is mixed with an effective mucolytic proportion of a non-toxic saponin and optionally also with a minor proportion of an anti-foaming agent.