baber/WOPTO huggingface dataset:
Patent GB-340939-A (GB)
Title: Improvements in or relating to the manufacture of aliphatic acids and esters
IPC: C07C51/12
Filed: 1929-10-01
Abstract: Aliphatic acids and their esters are prepared by the reaction of alkyl ethers with carbon monoxide in the presence of non-acidic catalysts known to promote the synthesis of aliphatic acids from aliphatic alcohols and carbon monoxide.  Suitable catalysts are substances which are, or are capable of forming, acetates which split off acetic acid at temperatures under 450 DEG  C., e.g. copper oxide, tin oxide, lead oxide, copper acetate, zinc oxide, zinc acetate, zinc methylate, aluminium methylate and tin methylate, or mixtures thereof with each other or with more basic materials such as potassium or sodium acetate.  Alkali methylates may also be added to the catalyst. The other conditions of the process are the same as those described in the parent Specification.  If sufficient water vapour is present in the reaction mixture, the aliphatic acid preponderates in the product, while in the presence of little or no water the ester is the main product.  The esters may be saponified to the acid by the processes described in Specifications 283,989 and 284,582, [both in Class 2 (iii), Dyes &c.].  According to an example, carbon monoxide and dimethylether are passed under a pressure of 100-200 atmospheres through a copper-lined reaction chamber filled with granules of zinc oxide or tin oxide or of a mixture of zinc oxide or tin oxide with sodium methylate; methyl acetate condenses from the products.  In the remaining example, the same process is conducted in the presence of steam, when acetic acid condenses.
Patent GB-1507009-A (GB)
Title: Flyer bobbin
IPC: D01H7/26
Filed: 1976-07-16
Abstract: 1507009 Bobbins SCHUBERT & SALZER MASCHINENFABRIK AG 16 July 1976 [24 July 1975] 29683/76 Heading B8M A flyer bobbin 1 comprises at least one gripper element 2 formed by a flat tongue or tab lying flush with the surface of the bobbin and cooperating with a cut-away portion 3 thereof to provide a readily accessible slot whereby the inner end of a slubbing to be wound on the bobbin is accommodated and secured. The tab may be of resilient plastics material or spring steel. The head of the bobbin may comprise circumferential grooves intercepted by portion(s) 3, Fig. 3 (not shown).
Patent GB-285980-A (GB)
Title: Improvements in or relating to electric condensers
IPC: H01G4/255
Filed: 1926-11-24
Abstract: 285,980. Barber, W. E. Nov. 24, 1926. Condensers comprise a case for the conducting plates, in which is screwed a cover to hold the plates securely in position. A cylindrical or otherwiseshaped casing 1 is threaded to receive a cover 2 and formed with two pairs of recesses 4, 5. The electrodes comprise strips 6, 8, each folded back on itself a number of times and connected to a terminal 7, 10. The strips 6, 8 are arranged to extend into, and be located by, the recesses 4, 5 respectively and to interleave one another with suitable circular mica discs 9 interposed. A screw 11 enables the condenser to be fixed to a panel, and to prevent tearing of the strips in assembling, a stiff metal plate is placed over the top condenser plate. The recesses in the side of the casing may be filled with paraffin wax, and the ends of the strips themselves may form the terminals. In a modification, stiff metal plates extend into the recesses, one for each electrode, and each plate has a terminal lug extending through a slot in the side of the casing at the recess.
Patent GB-340564-A (GB)
IPC: D01F2/08
Filed: 1929-10-01
Abstract: Cellulose xanthates, and processes for making filaments and films therefrom.-A sulphonated fatty oil or a derivative thereof such as turkey red oil is added to viscose to be used for the manufacture of threads, bands &c.  The proportion to be added, for example, 0,7 per cent, is insufficient to cause an appreciable modification in the appearance and other properties of the finished products.  The addition enables glass-clear viscose to be obtained even after a single filtration, permits of the use of finer spinning orifices, and effects an increase in the tenacity of the viscose.  In an example, the viscose is spun into a sulphuric acid bath containing sodium and magnesium sulphates.
Patent GB-1506857-A (GB)
Title: Pulse conditioning apparatus
IPC: H03K4/02
Filed: 1974-11-26
Abstract: 1506857 Semi-conductor circuits IRD MECHANALYSIS Inc 26 Nov 1974 [30 Nov 1973] 29742/77 Divided out of 1506856 Heading H3T Apparatus for cleaning a pulse train derived at terminal 65A, e.g. from a rotating body with a reference mark on its surface, comprises steering diodes 195, 196 and constant current diodes 197, 198 which feed the pulses to a comparator 200 to provide a single pulse each time the input exceeds a threshold level preset by potentiometer 202. These are fed to a monostable multivibrator 209 which delivers constant amplitude pulses of a predetermined duration set by switch 160E.
Patent GB-222709-A (GB)
Title: Improvements in telephoto objectives
IPC: G02B13/02
Filed: 1923-11-27
Abstract: 222,709. Lee, H. W., and Kapella, Ltd. Nov. 27, 1923. Lenses. - Telephoto lenses corrected for spherical and chromatic aberration, coma, astigmatism, curvature of field and distortion comprise two separated systems, each separately achromatized, the collective system being constructed of two collective components and the dispersive system of a dispersive and a collective component. The components of the collective system are of meniscus form, one or both being cemented doublets. The components of the dispersed system are separated by an air space, the facing surfaces having a collective effect and the collective component on the opposite side of the dispersive component to that of the collective system. Numerical data are given in the Specification, and Specification 198,958 is referred to.
Patent GB-771822-A (GB)
Title: Speed governor
IPC: G05D13/00
Filed: 1955-10-19
Abstract: 771,822. Centrifugal governors. FORD MOTOR CO., Ltd. Oct. 19, 1955 [Nov. 19, 1954], No. 29818/55. Class 57. A governor for the control of the flow of fluid fuel to a prime mover comprises two shafts 10, 16 connected to a cylindrical carriage 15, a hollow cylindrical element 22 slidably mounted in the carriage 15 and biased by a spring 23 towards one end of the latter, a second cylindrical element 24 slidably mounted within the element 22 and oppositely biased to the latter by. a spring 25, and a groove 26 around the periphery of the element 22 which, in response to increasing rotative speed, moves the groove out of communication with hollow portions of the shafts 10, 16. These portions are connected to fuel conduits 19, 28 and the shaft 10 is driven by a spline 11 from the prime mover which may be a turbine. The element 24 serves to maintain dynamic balance over a wide range of speeds.
Patent GB-1428393-A (GB)
Title: Process for the synthesis of pure isomers of long chain olefinic compounds
IPC: C25B3/29
Filed: 1972-06-26
Abstract: 1428393 Long chain olefinic compounds O MERESZ and D MOZSGAI 25 June 1973 [26 June 1972] 29835/72 Heading C5E [Also in Divisions C7 C2 and A5] Long chain olefinic compounds are prepared by electrolysing a mixture comprising a short chain carboxylic acid and a longer chain carboxylic acid, at least one of which has unsaturation, in solution in an organic solvent comprising a mixture of a first solvent capable of maintaining carboxylate ions in solution and thus becoming conducting, and a second solvent which is non-conducting, and recovering the long chain olefinic compounds so formed. Suitable first solvents are methanol, ethanol, pyridine and mono- and di-alkyl ethers of ethylene glycol. The second solvent may be petroleum, ether, cyclohexane, hexane or other non-aromatic hydrocarbon liquids. Alkali metal or alkaline earth metal cations may be present. The cathode may be Pt, Ni, Pd or stainless steel, the anode may be Pt. The short chain acid is preferably a C 2 -C 7  saturated acid and the longer chain acid a C 7 -C 23  unsaturated acid. Compounds prepared in the examples are cis and trans octadecene, cis-9-tricosene, 1-eicosene, cis-9-docosene, cis-9-tetracosene, 2-methyl cis-14-tricosene, cis-9-pentacosene, 2-methyl cis-15-tetracosene, cis-9-nonadecene, cis-9-eicosene, cis-9-heneicosene 2 - methyl cis - 11 - eicosene, trans - 9- nonadecene and 6,9 nonadecadiene, all except the first four of which are claimed per se.
Patent GB-696270-A (GB)
Title: Improvements in or relating to insulating supports or clamps for holding cables, wires and other electric conductors
IPC: F16L3/10
Filed: 1951-12-20
Abstract: 696,270. Supporting cables. SIHN, W., [trading as SIHN, W. [Firm of]]. Dec. 20, 1951 [Dec. 27, 1950], No. 29849/51. Class 36. [Also in Group XXV] A support for a cable, wire, or conductor in the form of a metal band comprises an in sulating body 2 with nails 3 for fastening it to a wall and having a flat or grooved face 4 tc receive the conductor or cable which is retained in place by a resilient clamping member 5 having hooked ends 6 which engage shoulders 7 on the body 2. The member 5 is shaped so that it is under tension when in the clamping position shown in Fig. 1. Fig. 5 shows a modification in which the resilient clamping member 17 is made in one piece with the body 16 and has a single hook portion 21 to engage a shoulder 22 on the part 16. The body portion and the clamping member may be formed with notches or grooves to receive the conductor.
Patent GB-237793-A (GB)
Title: Improvements relating to crystal detectors for wireless receiving systems
IPC: H01L29/00
Filed: 1924-11-12
Abstract: 237,793. Edmonds, Ltd., G., and Edmonds, H. Nov. 12, 1924. Crystal detectors. -In detectors of the enclosed type, and in which the ball member is permanently secured to the end cap or bracket, the securing means is provided by a spring. In the detector shown in Figs. 1. 5 and 6, both end caps are formed in one piece with the supporting brackets. The ball member 9 is held against a seating 11 in the end cap by a three-armed spring 12 secured to the end cap hy lugs 14 at the ends of the arms. A twoarmed spring may be used. In a modification, Fig. 7, the ball is held by a helical spring arranged between a bearing slate 16 and a rigid bridge member 15 secured to the end cap.
Patent GB-505038-A (GB)
Title: Improvements in or relating to pumping apparatus employing a centrifugal pump
IPC: F04D15/00
Filed: 1937-11-03
Abstract: 505,038. Centrifugal pumps. SULZER FRERES SOC. ANON. Nov. 3, 1937, No. 30166. Convention date, Nov. 23, 1936. [Class 110 (i)] A centrifugal pump a with an automatic non-return valve f in the suction pipe b has a passage g which byepasses the non- return valve and is controlled by a valve h which is in turn slowly closed automatically on an increase in pressure in the suction pipe. The valve h is actuated by a differential piston i. The lower side of this piston is connected to the discharge of the pump and the upper side to the suction. When the pump is started up, the pressure under the piston rises and the valve h. opens. If the pump fails from any cause, the pressure on the discharge side will equal that on the suction. side and the valve h will close as the area of the upper face of the piston i is greater than the lower. Valves m, n may be fitted in the connections k, l, to regulate the rate of opening or closing' of valve h.
Patent GB-338297-A (GB)
Title: Improvements in or relating to tubular conveyor systems
IPC: F16C19/20
Filed: 1929-10-05
Abstract: 338,297. Telephon-Apparat-Fabrik E. Zwietusch & Co., Ges. Nov. 24, 1928, [Convention date]. Pneumatic dispatch apparatus.-A device for controlling the interval between successive containers during travel consists of an electromagnetically-operated forked stopping member controlled by the containers. In one form, a contact lever 10, Fig. 1, is moved by a travelling container so that a cam disc 14, Fig. 2, is rotated, whereby contacts a and bare closed and an electromagnet 12 is energized. A lever 13 is therefore attracted, and the lever 3 swung outwardly so that a member 4 under the influence of a spring 5 obstructs the passage of any subsequent container. The contact lever 10 returns to its original position under spring action, but the electromagnet 12 remains energized through an auxiliary contact until the container operates a second contact after a predetermined interval, thus releasing a subsequent container which has become held by the member 4. In a modification, a container 25, Figs. 4 and 5, is stopped by a segment 23 which is rotated from its position of rest until it comes into contact with the end 20<1> of a lever 20. If the preceding container has operated a contact at an appropriate distance from the segment 23, the arrangement is such that an electromagnet is now energized and the forked lever 21 caused to project into the conveyer tube to retain the container 24. The member 23 is now free to continue its rotation, and the container 25 continues on its journey. The segment 23 therefore assumes in turn three positions, in each of which it controls different electric circuits for the purposes of signalling, indicating, or junction setting.
Patent GB-247696-A (GB)
Title: Improvements in tinplate cleaning machines and the like
IPC: C23C2/00
Filed: 1924-12-17
Abstract: 247,696. Thomas, A. M. Dec. 17,1924. Cleaning.-In a branning-machine for cleaning tin plates &c., the plates are fed by a guide 20 and inclined plate 21 on to a shoot 14 secured to a lateral bar 15 mounted in bearings in the sides of the bran trough 1 and on which is mounted on a depending arm 16 and a weighted arm 17. Mounted on chain wheels 4 passing over sprockets 3 carried by shafts 2 rotating in bearings in the sides of the trough 1 are lateral bars 5 carrying fingers 6 and a rod 7 and roller 6. the latter revolving in brackets attached to the belts 4. The plate being in position on the shoot 14, the rod 7 on the moving belts 4 engages the rod 16 and inclines the shoot 14 whereby the plate is delivered into the bottom of the trough 1 and is pushed therethrough by the fingers 6, being kept in position in the trough by guides 13. The plate, after passing through the trough 1, is fed by a bladed roller 9 to the usual cleaning rollers 10, 11, 12. When the shoot 14 is inclined one end engages the plate 21 and pushes it into the horizontal position thus preventing the feeding of the next plate on to the shoot 14 until the latter, after the deposition of the first plate in the trough, has been returned to its normal position by the weighted arm 17. A buffer plate 19 carried by a bracket 18 prevents the premature escape of the plate from the shoot 14.
Patent GB-701370-A (GB)
Title: Improvements in or relating to woodworking machines
Inventor: WOMERSLEY JOHN KENNETH
IPC: B24B3/38
Filed: 1952-01-29
Abstract: 701,370. Wood-planing machines; grinding. WOMERSLEY & BROADBENT, Ltd. Jan. 30, 1953 [Jan. 29, 1952], No. 30321/52. Classes 60 and 145 (1) A work guide or fence 1 for a wood-working machine such as a surfacing or a combined surfacing and thicknessing machine, is movable transversely across the work table 2 and has bolted to it, or formed integrally with it, a bracket 8 carrying a vertically adjustable leg 10 on which is held a hone or abrasive member 13 for honing the blades of the cutter 3 by repeated traverses of the fence while the cutter is rotating. A clamp 12 and bolts 14 secure the hone on the leg and the leg is adjustable in a slot 9 in the bracket 8 by means of a screw 17, the leg being clamped in the adjusted position by a bolt 15 passing through a slot 16. Workholding means may be associated with the fence and calibration may be provided to indicate the setting of the leg 10.
Patent GB-171691-A (GB)
Title: A process for the production of artificial threads, films and the like from viscose
IPC: D01F2/08
Filed: 1921-11-15
Abstract: The precipitation bath employed in the manufacture of filaments, films, &c. from viscose consists of an aqueous extract of the bark and small twigs of conifers, to which has been added a mineral acid or an acid salt.  To obtain the extract, small twigs or the bark portions of conifers are boiled with water, with or without pressure, and the turbid liquid is then drawn off, and evaporated if necessary to 3-5 DEG  B<\>ae; the requisite quantity of sulphuric acid of 60 DEG  B<\>ae is afterwards added.  Specification 145,627 is referred to.
Patent GB-1222812-A (GB)
Title: Electrically heated engine starting aid
Inventor: CURZON THOMAS
IPC: F23Q7/00
Filed: 1967-07-03
Abstract: 1,222,812. 812. Electrically heated starting aids. C.A.V. Ltd. May 27, 1968 [July 3, 1967], No.30521/67. Heading F1B. A method of assembling the electrical heating element 13 in the end portion of the tubular member 10 of a starting aid comprises first securing the heating element to a thin walled tubular rod 14, secondly placing the tubular rod over the conductive member 11 and inside the tubular member and thirdly winding the heating element upon the rod by rotating the rod, the heating element being drawn through a slot 15 in the end portion of the tubular member. If desired a portion of the element may be wound on the rod before insertion into the tubular member. Specification 1,127,454 is referred to. 1,222,820. I. C. engine fuel systems; stopping engines. R.E.L. 120D. Nov.26, 1968 [Dec.2, 1967], No. 54912/67. Headings F1B and F1K. [Also in Division F2] To prevent the fuel tank 7 of a fuel-injection I. C. engine from fully emptying, with consequential occurrence of air locks in the fuel system, a float-operated valve 1 located in the tank obstructs the outlet from the tank if the level in the tank falls below a predetermined level, whereby flow of sufficient fuel to permit continued running of the engine is prevented, so that the engine stops. A controlled leakage of fuel may be allowed, either through the valve or through a small by-pass bore, so that the vacuum occurring in the fuel system after the engine has been stopped is gradually removed, thereby reducing the risk of air leakage into the fuel system through imperfect joints. The vacuum may be used to actuate a piston 49 to close down the fuel injection pump 43 by means of the rack 45. Instead of a piston 49, a solenoid controlled by a vacuum switch may be used, and the vacuum switch may also control a solenoid-operated stop cock located upstream of the pump 43. The stop cock may instead be operated through a diaphragm by the difference in pressure between a point in the fuel line 11 adjacent the stop cock and a point adjacent the valve 1.
Patent GB-801420-A (GB)
Title: Copolymers of acrylonitrile and alkenylaromatic sulphonates, and dyeable fibres thereof
IPC: C08F220/46
Filed: 1956-10-08
Abstract: Linear fibre-forming copolymers are made from acrylonitrile and an alkenyl aromatic sulphonic compound of the general formula <FORM:0801420/IV (a)/1> wherein R is methyl or hydrogen; X is hydrogen, metal or ammonium; Y is chlorine or bromine and n is 0, 1 or 2; and Z is hydrogen, methyl or ethyl; said copolymer containing from 1 to 10 per cent of the sulphonic compound.  The sulphonic compound may be styrene-, vinyltoluene-, vinylethylbenzene-, isopropenylbenzene-, isopropenyltoluene-, isopropenylethylbenzene-, 2-chlorostyrene-, 2,4-dichlorostyrene-, 2-methyl-4-chlorostyrene-, 2-chloro-4 - ethylstyrene-, 2,4 - dichloro - 6 - methyl styrene-, or 2 - chloro - isopropenyl benzene-p-sulphonic acid or the sodium, potassium, lithium calcium, magnesium or ammonium salts thereof. The copolymers may be made by conventional polymerization procedures, preferably whilst the monomers are dissolved in a 60 per cent aqueous zinc chloride or calcium thiocyanate solution using conventional catalysts, e.g. potassium persulphate.  Fibres spun from solutions of these copolymers are readily dyed with acid, acetate, basic or vat dyes.
Patent GB-261201-A (GB)
Title: Improved method of and means for reducing photographic negatives, positives, films, bromide and gaslight prints
IPC: G03C5/42
Filed: 1925-12-07
Abstract: 261,201. Taeschner, K. E. Dec. 7, 1925. Reducing intensity.-To effect reduction without destroying delicate half tones, negatives or prints are treated in a reducing bath containing iodine and potassium iodide, and either simultaneously or previously with a hardening agent of bichromate of potash or a bichromate or chromate of any other alkali, Sugar may also be added and the substances may be brought into solution in the form of an intimately triturated powdermixture. An acid fixing bath is used. Specific examples of baths are given.
Patent GB-1079229-A (GB)
Title: Welding and sealing metal members
IPC: B21D39/03
Filed: 1965-07-21
Abstract: 1,079,229. Welding by pressure. FORD MOTOR CO. Ltd. July 21, 1965 [Aug. 3, 1964], No. 30978/65. Heading B3R. In joining two metal members which may be parts of a motor vehicle body a ribbon carrying a continuous length of sealer material is arranged between the members and welding current is passed through the members. A sealer material 12 including thermoplastic resin, oil, carbon black and aluminium flakes is extruded through a nozzle or applied by brushing, knifing, flowing or spraying to ribbon 13 of steel, zinc or aluminium foil or possibly paper or plastic. The sealer coated surface of the ribbon is applied to one sheet 14 to stick thereto and the other sheet 15 is placed thereover. Welding electrodes then spot weld the sheets through the conductive sealer, the sealer flowing away from the spotwelded areas and surrounding the areas. In one modification a ribbon is employed having holes or slits therethrough and under the welding pressure the sealer is squeezed through the perforations and in another modification sealer is applied to both faces of the ribbon.
Patent GB-927020-A (GB)
Title: A device for introducing liquids into the blood stream
IPC: A61M5/162
Filed: 1961-08-29
Abstract: 927,020. Transfusion apparatus. E. B. RAVIZZA. Aug. 29, 1961 [June 27, 1961], No. 31021/61. Class 81(2). A device for introducing liquid into the blood stream comprises a perforating device for the container, incorporating a filtered air inlet, and tubing leading to an injection needle, the tubing and the perforator being made from a transparent material. The arrangement, preferably, also includes a transparent drip chamber. The perforator comprises a tapered hollow member 14 surrounding a pointed, perforating cannula 21 and having a flange 13 to limit the depth of penetration. During the withdrawal of liquid from the container 50 air enters through a filter plug 16 and passes into the container through apertures 15. The drip chamber is made from a bag-like member divided into two chambers 32, 36 by a partition 33 having a duct 34 through which liquid may pass to a filter 35. A standard needle is attached to the free end of the transparent tube 25 by a suitable adaptor 40.