baber/WOPTO huggingface dataset:
Patent GB-773924-A (GB)
Title: Improvements in and relating to multiple twisting spindles
Filed: 1955-07-29
Abstract: 773,924. Multiple twisting spindles. MORAWEK, W. July 29, 1955 [Aug. 2, 1954], No. 22031/55. Class 120 (2). A multiple twisting spindle having a rotating delivery cap and a bobbin can that is held or is adapted to be held stationary, is characterized in that the bobbin can is provided externally with axially spaced rings each having a scraping or knife edge for removing loose parts of the thread and arranged to protect the delivery cap from accumulations of such parts. In the arrangement shown, feed bobbin 1 is mounted on the stationary hollow spindle 2 and surrounded by a can 3 which is rotatably mounted at 5 on the spindle bore but is held fast against rotation by magnets 6 and 7. Below the can 3 is a delivery cap 8 which rotates with the spindle 4. The can 3 has a ring 11 which is of somewhat greater diameter than the top edge of the cap 8 and has a scraping or knife like edge 12. Above the ring 11 the can is provided with further rings of progressively increasing diameter as shown at 15 and then rings of decreasing diameter as indicated at 16 and so on, to conform with the configuration of the ballooning yarn. The rings may be provided with holes or slots as indicated at 20 to permit material wiped off the thread to get away and prevent accumulations thereof. The normal so called separators between each two spindles of the machine may also be provided with rings having scraping or knife like edges as shown at 19 and these may be placed appropriately along the entire length of the spindle, e.g., in alternating relation to the rings on the can.
Patent GB-1068063-A (GB)
Title: Amplifier assembly
IPC: H03F1/30
Filed: 1964-05-28
Abstract: 1,068,063. Transistor amplifying circuits. ELECTRONIC ASSOCIATES Inc. May 28, 1964 [July 25, 1963], No. 22117/64. Heading H3T. In a stabilized direct coupled amplifier of the type in which drift correction is achieved by means of a modulator/demodulator amplifier, the second amplifier is more responsive to its modulating frequency than to lower frequencies. As shown, the input 14 is fed via an input resistor 15 and a capacitor 21 to a direct coupled amplifier comprising transistors 23, 26, 33 to an output terminal 11 provided with a feedback circuit 20. Voltage limiting diodes 22a, 22b and a frequency-sensitive feedback circuit 35a, 35b, 31, 31a are provided. Drift correction is achieved by amplifying the voltage at 18 in a second amplifier 12, modulated by a chopper 45 and feeding it via resistor 76 to the input of amplifier 10. A negative feedback circuit comprising network 55 (which rejects the modulating frequency) ensures that the amplifier 12 is predominantly sensitive to that frequency. A compound emitter follower 23, 26 is employed thus enabling a comparatively low value, low leakage, polystyrene capacitor to be used at 21.
Patent GB-1262765-A (GB)
Title: Process and apparatus for controlling the refining of pig-iron
IPC: C21C5/30
Filed: 1969-05-01
Abstract: 1,262,765. Oxygen steel making. CENTRE NATIONAL DE RECHERCHES METALLURGIQUES. May 1, 1969 [May 3, 1968j, No.22184/69. Heading C7D. Oxygen top-blowing of pig-iron is controlled by measuring the quantity of oxygen blown in; determing the quantity of Co burnt in the hood by measuring the temperature of the fumes, using the ratio K = [CO]/([CO] + [CO 2 ]) representing the proportion of CO in the CO + CO 2  in the fumes and a thermal balance; determining the rate of decarburization, the instantaneous C content of the metal, the distribution of oxygen between the metal and slag and the total quantity of oxygen supplied to the slag from the above measured and determined values; and regulating the blast conditions so that these four parameters approach or follow a predetermined course. The hood may operate with or without sprayed water cooling; the variation of the value of the ratio K may be allowed for in the determinations when its value is continually measured (e.g. by measurement of the noise level close to the mouth of the converter); and the determinations and control may be effected by a preferably digital computer. The control may be affected through the rate of oxygen flow, the height of the lance above the melt or the instantaneous quantity of oxygen blown in up to that time.
Patent GB-873261-A (GB)
Title: Stabilisation of trichloroethylene
Inventor: DUTTON BRIAN GORDON
IPC: C07C17/42
Filed: 1959-06-29
Abstract: Trichlorethylene is stabilized by the incorporation of 0.001-2%, preferably 0.02-0.3%, by weight of pyrazole or an N-alkyl pyrazole such as N-methyl pyrazole.ALSO:Trichlorethylene for use in metal degreasing is stabilized by the incorporation of 0.001-2%, preferably 0.02-0.3%, by weight of pyrazole or an N-alkyl pyrazole such as N-methyl pyrazole.  Other antioxidants and stabilizers such as certain basic amines, ethers, alcohols and esters (none specified) may also be included.
Patent GB-368650-A (GB)
Title: Improvements in or relating to steam generators equipped with superheaters
IPC: F22G7/14
Filed: 1931-08-05
Abstract: 368,650. Water-tube steam boilers. SUPERHEATER CO., Ltd., Bush House, Aldwych, London.-(Superheater Co. ; 60, East 42nd Street, New York, U.S.A.) Aug. 5, 1931, No. 22223. [Class 123 (ii).] A superheater 38 is located in a space 36 bounded by a bank of bent tubes 16 connecting vertical and horizontal header sets 14, 18, the higher end part of a lower bank of straight tubes 28 connecting headers 26, 32, and the circulators 34 of the straight tube bank leading through the headers 18 to a cross drum 10, baffles 48, 50, 51 directing the gases after traversing the straight tubes first over the superheater and then the bent tubes. The individual superheater elements are arranged to avoid traps for liquid flowing from one header to the other so as to be completely drainable. In a modification alternate vertical rows of tubes connected to the headers 14 consist of straight tubes which extend across the space 36 to vertical headers connected directly to the cross drum. The superheater elements which in this arrangement are vertically arranged are located in the spaces between the straight tubes, their lower ends preferably extending slightly below the water-tubes.
Patent GB-1158210-A (GB)
Title: Furnace Repair Gun.
Inventor: DEMAISON RAYMOND JULES
IPC: E04F21/12
Filed: 1967-05-12
Abstract: 1,158,210. Pneumatic conveyers. QUIGLEY CO. Inc. 12 May, 1967, No. 22253/67. Heading B8A. [Also in Divisions E1 and F4] Powdered material from tank 10 is fed, when valve 14 is opened, through a flexible conduit 40 by the action of air jets 25, 27 discharging into Venturi constrictions 41, 42 respectively. This arrangement helps prevent blockage in the throat portion 10c of pressurized tank 10. Jet 25 is slightly smaller than jet 27 and operates at a slightly lower pressure.
Patent GB-1124529-A (GB)
Title: Improvements in or relating to percussive tools and machines
Inventor: JAMES DAVID RICHARD
IPC: B25D9/14
Filed: 1966-05-19
Abstract: 1,124,529. Percussive tools. SONOMOTIVE ENGS. Ltd. 5 July, 1967 [19 May, 1966], No. 22299/66. Heading B4C. A percussive tool such as a road breaker, comprises a piston 3 slidably mounted in a chamber 5 to which hydraulic pressure pulses are supplied so as to move the piston upwardly against the action of a spring means 9, 17, a further chamber 8 which in use is filled with liquid to provide a liquid medium through which the spring means act on the piston, and a pressure balance valve 20 adapted in the non- operating condition of the tool, to place the chambers 5, 8 in communication one with the other and so relieve any excess pressure in the chamber 8. With the valve in the position shown, i.e. non-operating position, liquid is fed from a make-up pump into the chamber 5 and flows via ports 26, 27 and a passage in the valve 20, into portions 8a, 8b constituting the chamber 8. The liquid flows through ports 15 in a plate 14 to act on a diaphragm 17 loaded by compressed air in a chamber 9, this chamber constituting the spring means. To operate the tool, the valve 20 is depressed by a push-button 22 thereby cutting off communication between ports 26, 27 and at the same time closing electrical contacts 32, 33 to energize an hydraulic pulse generator which feeds liquid to the chamber 5 to reciprocate the piston 3. In a modification (Fig. 4) the valve 20 is operated by means of lever (54); alternatively, the valve may be loaded by a spring to the position shown and provided with a piston head as so to be automatically moved to its other position when liquid is fed to the chamber 5.
Patent GB-1283677-A (GB)
Title: Combination column
IPC: G01N30/84
Filed: 1971-04-19
Abstract: 1283677 Liquid chromatography apparatus; liquid/solid contact; jacketed reactor columns BOEHRINGER MANNHEIM GmbH 19 April 1971 [23 Feb 1970] 22300/71 Headings B1D B1F and B1X Apparatus which can be used in chromatography, filtration, analysis, reaction promotion or centrifugal separation is made from a number of similar, cylindrical, optionally transparent, plastics threaded units and comprises at least one cylindrical column segment 1, threaded at both ends, at least one hollow, threaded separating piece 2 provided with a mesh 3, and at least one end piece 4, provided with a nozzle 6. Larger threaded intermediate pieces 7 can also be used and are provided with a nozzle 9 and internal valving which allows withdrawal of sample at desired points. Mesh 3, if used, may house a molecular sieve, ion exchanger, carrier bound protein or enzymes, or combinations thereof. The apparatus can be lowered into a liquid to promote a reaction, can be rotated by means of a magnetic arrangement, Fig. 4 (not shown) to effect centrifugal gel separation or can be provided with end filter paper or membranes to effect filtration or dialysis. Analysis of proteins can be carried out by placing enzymes bound to solid carriers in the column and passing the protein to be analysed through the filled column. Samples drawn off at intermediary points can show whether say amino acids or oligopeptides have been split off by the enzyme action. In further analysis a reaction is conducted in a first column segment and in a second column segment a dissolved reagent is introduced via an intermediate piece 7 so that direct determination of the reaction can be made. A larger diameter column segment can be arranged around a smaller column segment by means of a threaded end closure piece so that the annular space provided between the segments can be used to circulate a heating fluid Fig. 5-7 (not shown).
Patent GB-792614-A (GB)
Title: Process for removing higher acetylenes from hydrocarbon mixtures
IPC: C07C7/10
Filed: 1956-07-19
Abstract: Mixtures of hydrocarbons containing at least three carbon atoms are freed from higher acetylenes which are defined as acetylenes containing more than two carbon atoms by treating the condensed hydrocarbons with an aqueous solution of a cuprous salt under pressure and the cuprous salt solution is led in a closed cycle, without relief of pressure, in which cycle the higher acetylenes are converted into liquid and solid polymers.  The hydrocarbon mixtures may be for example a cracked mineral oil from which it is desired to extract butadiene.  In a preferred process the condensed hydrocarbon mixture obtained from a cracking process is treated with 0.5 to 5 times its volume of a cuprous salt solution at room temperature and 5 to 10 atmospheres pressure with stirring.  The cuprous salt solution enriched with higher acetylenes is continuously removed and heated to 80-100 DEG  C. for about an hour.  The solid polymers formed are filtered off after cooling and the solution is returned to the extraction stage where liquid polymers formed are given up to the hydrocarbon mixture which can then be fractionated.  In an example, 1 part by volume of a hydrocarbon mixture containing 1.1 per cent by weight of higher acetylenes is washed with 2 parts by volume of an aqueous cuprous salt solution at 20 DEG  C. and 7 atmospheres pressure.  The cuprous salt solution contained per litre 3 mols. of cuprous ions, 0.2 mols of cupric ions, 4 mols. of acetic acid and 11 mols. of ammonia.  The resultant hydrocarbon contained no higher acetylenes and 0.7 per cent by weight of liquid polymers.  The cuprous salt solution was heated to 90 DEG  C. for one hour and 0.3-0.4 per cent by weight of the original hydrocarbon feed removed as solid polymers.
Patent GB-1394094-A (GB)
Title: Data processing for keeping records
IPC: G06Q10/00
Filed: 1972-05-15
Abstract: 1394094 Selective signalling; card reader SIGMA SYSTEMS Inc 15 May 1972 [17 May 1971] 22634/72 Headings G4H and G4M When an item is withdrawn from a collection of items, e.g. a lending library, by one of a number of users, a label associated with the item and identification means associated with the user are both machine-read to produce electrical item and user identification signals which are stored together, the stored signals being deleted on return of the item to the collection. The storage is at a central computer which also contains stored information relating to overdue items, reservations, expiry (of right to borrow from the library collection), delinquency (fines owed), users, items and statistical information. A console in the library communicating with the computer, has a reader for item labels, and (for checking out items) a reader for user identifying cards and "confirm (OK)", "expired" and "delinquent" lights, and (for checking in items), "paid", "damaged" and "clear" buttons, a "reverse" light and an "amount due" display, Separate consoles for check-in and check-out may be provided. "Overdue" and "reserved item available" notices are automatically printed out at the computer. A keyboard and CRT display unit and a teletypewriter unit may also communicate in both directions with the computer so that, e.g. information may be entered regarding new users and reservation requests. Readers.-The label is in the form of a trapezoid for registration of the reader which is positioned by hand, optical sensing of dark and white bit areas on the label being employed The reader for the user card has a slot into which the card is pushed against springs for sensing of bit holes by spring-loaded balls actuating microswitches, the card having a slot which actuates another microswitch similarly to reset the system on withdrawal of the card. Either reader can use optical, magnetic or mechanical sensing. Dark and white areas may be replaced by coloured areas. Infra-red is also mentioned.
Patent GB-143120-A (GB)
Title: A device to vary the angular velocity of a rotating body
IPC: F16H35/02
Filed: 1919-09-16
Abstract: 143,120. Johnson, P. G. Sept. 16, 1919. Toothed gearing. - Cyclic variations in the speed of a rotating body are produced by an arrangement of gearing and cams. Two gear-wheels are fixed on a shaft a, the one b being of the helical type, and the other c being preferably of the spur type. A pair of corresponding pinions d, f having cams h, h formed on or attached to them, are carried by the driving-shaft e, the pinion d being slidably mounted on a spline d', and the pinion f being free. The ratio of the helical gear being different from that of the other gear, the pinions rotate at different speeds, causing a cyclic lateral movement of the pinion d and consequent variations in the speed of the shaft a. Alternatively, the pinions may be keyed on shaft e, the shaft a carrying the sliding helical wheel and its attached cam, and the other wheel being free. A spring may be used to assist the return lateral movement of the pinion d.
Patent GB-239868-A (GB)
Title: Improvements in or relating to foot supports for insertion in boots or shoes
IPC: A43B7/22
Filed: 1925-09-11
Abstract: 239,868. Arendt, O., (Assignee of Arendt. B. H. [Firm of]). Sept. 12, 1924, [Convention date]. Foot-arch supports.- A foot-arch support, for insertion in boots and shoes, has a hollow pad a<1> of soft rubber provided with a slit l for the insertion of a varying shaped core d of harder material such as cork, wood, or harder rubber. The pad has a preferably removable cover a and can be used loose or incorporated with an insole. The pad a<1> is connected with its cover a by lacing k and is detachably secured on a stiff base b of metal or the like by press-buttons i. The base b can also be provided with a covering of leather, rubber, cord, or fabric.
Patent GB-732224-A (GB)
Title: Improvements in or relating to zinc-containing compositions and the use of such in electroplating baths
IPC: C25D3/22
Filed: 1951-09-28
Abstract: The invention comprises the product obtained by reaction in water of thiourea, an aldonic acid or acids (or the lactone thereof) and zinc oxide wherein the molar ratio of thiourea to the aldonic acid or acids (or lactone form thereof) employed is at least 1 : 24 and that of zinc oxide to aldonic acid or acids (or lactone form thereof) is at least 1 : 4.  Preferably the reaction product is heated until a 96 mol. sample of the reaction product at a temperature of 185-195 DEG F. will pass in approximately 75 to 77 seconds through a 100 mol. pipette calibrated to pass 100 mol. of water at 20 DEG  C. in 45 seconds and finally drying the reaction product.  Preferably the thiourea is mixed with an aqueous solution of the aldonic acid and the zinc oxide is then added slowly.  The reaction mixture is then heated and further cooked at a lower temperature to a predetermined viscosity such that it will set solid when allowed to cool.  Aldonic acids which may be used as starting materials include gluconic acid, mannonic acid, arabonic acid, galactonic acid and xylonic acid.  One or more of these acids may be used or mixtures thereof including mixtures of the lactone forms of the acids.  The delta- and gamma-forms of gluconic acid are particularly effective.  In an example thiourea is mixed with aqueous gluconic acid and zinc oxide is added.  When foaming subsides the batch is heated and then cooked at a lower temperature until the product has the preferred viscosity, the pH being adjusted meanwhile by addition of zinc oxide or gluconic acid, and the product is dried in air.  The compositions may be added to electroplating baths, especially acid zinc sulphate plating baths (see Group XXXVI) and may be used in the manufacture of skin ointments.ALSO:Zinc-containing compositions, obtained by the reaction in water of thiourea, an aldonic acid or acids (or the lactone form thereof) and zinc oxide, the molar ratio of thiourea to aldonic acid or acids (or lactone form thereof) being at least 1 : 24 and that of zinc oxide to aldonic acid or acids (or lactone form thereof) at least 1 : 4 (see Group IV (b)) may be used in skin ointments.
Patent GB-1278323-A (GB)
Title: Improvements in or relating to lifting platforms with loading flaps
IPC: B66F7/08
Filed: 1969-05-05
Abstract: 1278323 Platform elevators for loading vehicles HYDRAULMEKANO AB 5 May 1969 [3 May 1968] 22752/69 Headings B8E and B8H A lifting platform 1 is raised and lowered by a cylinder C1 coacting with a linkage 21. A loading flap 2 pivoted to the platform 1 bridges the gap to a vehicle 3 to be loaded or unloaded. Variations in the height of the vehicle 3 are automatically compensated by control means comprising limit switches LS.2, LS.3 coacting with rings 7, 8 adjustably mounted on a rod 5 extending between the flap 2 and the platform 1 in parallel with a cylinder C2. If the vehicle 3 rises, e.g. due to unloading, the flap 2 pivots upwardly actuating LS.3 causing the cylinder C1 to raise the platform 1 to restore the initial condition. Conversely, a fall in the vehicle 3 actuates LS.2 resulting in the platform 1 being lowered. A predetermined, preferably horizontal attitude of the flap 2 is thus maintained. Limit switch LS.4, in series with LS.2, LS.3 (Fig. 4, not shown), determines the range over which the device operates, while limit switch LS.1 ensures that the flap 2 is swung upwards fully before the platform 1 is fully lowered.
Patent GB-642141-A (GB)
Title: Improved heating element for electric resistance furnace
IPC: H05B3/06
Filed: 1947-08-15
Abstract: 642,141. Couplings. PARSONAGE, S. H. Aug. 15, 1947, No. 22772..[Class 38 (i)] [Also in Groups XI and XXII] A heating resistance for use at 1700‹ C. comprises a helical tungsten or molybdenum wire or strip con. nected at each end by resistance sintering to a metal rod 2, the sin. tered joint 3 including powdered tungsten or molybdenum and a metal hydride, e.g. titanium hydride. The flexible resistance is mounted in an impervious tube 4 having its ends connected by a glass seal to the rods 2. The resistance may comprise two metal helices, one within the other and connected together at both ends. The resistance may be non-metallic and comprise a graphite rod 8 to the thickened ends of which by resistance sintering springy metal helices 7 sintered at 3 to metal rods 2, a metal hydride being included in the sintered joint.
Patent GB-842656-A (GB)
Title: A method for the preparation of a 6ª‰:21-dimethyl pregnyne triol
Inventor: PETROW VLADIMIR
IPC: C07J75/00
Filed: 1957-07-18
Abstract: 6b  : 21 - Dimethyl - 17 a  - pregn - 20 - yne - 3b : 5 a  : 17b  - triol is prepared by oxidising 3b  : 17b  - dihydroxy - 21 - methyl - 17 a  - pregn - 20 - yn- 5 - ene or a 3b  - acyloxy derivative thereof to the corresponding 5 a  : 6 a -epoxide and then reacting this with a methyl magnesium halide.  Acylation at the 3-position may be effected after the epoxidation, which is advantageously effected with an organic per-acid such as perbenzoic acid or monoperphthalic acid in a solvent such as tetrahydrofuran, ether or chloroform.  The second stage of the process is advantageously effected with excess methyl magnesium chloride, bromide or iodide in a solvent such as ethyl or butyl ether.  Examples are given.  Specifications 801,201, 841,880, and 842,678 are referred to.
Patent GB-907536-A (GB)
Title: Improvements in means for securing bags or like containers to filling spouts
IPC: B65B39/08
Filed: 1957-07-19
Abstract: 907,536. Bag-filling apparatus. RAWLINGS, J. Oct. 17, 1958 [July 19, 1957], No. 22918/57. Class 94 (1).  A device for clamping the neck of a bag 7 to a filling nozzle 2 comprises an inflatable ring 8 backed by a rigid support 5, the inflated; ring pressing the bag neck against the nozzle.' The ring may be shaped so that it contacts the bag neck only at spaced points or has a protuberence engaging a groove 4 in the nozzle. The ring and support may be adjustable vertically on rods 6 and these and the nozzle may be interchangeable with others of different sizes. The nozzle may be of stepped telescopic form or tapered. The device may be normally or automatically operated. Specification 851,475 is referred to.
Patent GB-352758-A (GB)
Title: Improvements relating to stair rods and fasteners therefor
IPC: A47G27/06
Filed: 1930-07-30
Abstract: 352,758. Stair-rod fasteners. HALLDRON, C. R., Granville, Portobello, Willenhall, Staffordshire, and WITHERIDGE, A. J., The Uplands, Sargent Hill, Birming- ham Road, Walsall. July 30, 1930, No. 22924. [Class 52 (v).] A stair-rod is provided on its rear face with headed studs which en. gage vertically arranged keyhole slots 2 in angle brackets 1 secured to the stairs. The slots 2 may be recessed at 5 to receive the heads of the studs.
Patent GB-258085-A (GB)
Title: Improved piston bodies
IPC: F02F3/00
Filed: 1925-09-15
Abstract: 258,085. Skinner, D. Sept. 15, 1925. Pistons; connecting- rods. - In a piston in which the head A is formed with an extension screwing into the skirt D, the gudgeon pin is enclosed in the skirt and is secured between semicircular bearings H, J in the head and a flat flange K in the skirt. Unscrewing of the head may be prevented by pawls M, N on the head engaging ratchet teeth L on the skirt, or otherwise.