baber/WOPTO huggingface dataset:
Patent GB-696066-A (GB)
Title: Polymers
Inventor: DREWITT JAMES GORDON NAPIER
IPC: C08F20/50
Filed: 1950-03-16
Abstract: An acetone-soluble film-forming copolymer of methacrylonitrile and vinylidene chloride alone which contains 55 to 99 per cent of methacrylonitrile is preferably prepared in an aqueous suspension or dispersion containing methacrylonitrile and vinylidene chloride in a ratio between 52.5 : 47.5 and 90 : 10, the ratio of water to total monomer being from 3 : 1 to 6 : 1, polymerization being initiated by means of a peroxy compound.  The emulsifying agent used is preferably sodium secondary octadecyl sulphate, other suitable emulsifying agents being alkali metal or ammonium salts of other long-chain alkyl sulphates, of aralkyl sulphates, of alkyl-aryl sulphonic acids or of long-chain alkyl carboxylic acids.  The catalyst is preferably potassium or ammonium persulphate, other suitable catalysts being benzoyl, acetyl, lauryl and hydrogen peroxides and tertiary butyl hydroperoxide. Redox system may be employed using oxygen or one of the above catalysts in conjunction with a reducing agent such as sodium sulphinate or a sugar.  Regulators such as dodecyl mercaptan, acetaldehyde and dioxane may be used to control the average molecular weight of the polymer, and polymerization may be stopped by addition of an anti-oxidant such as phenyl-beta-naphthylamine. Additions of methacrylonitrile may be made in the course of polymerization so as to keep the monomer ratio constant throughout.  The copolymer may be recovered from the aqueous latex by addition of an aqueous solution containing ions capable of neutralizing the charge on the latex particles, by freezing the p  latex, or by the use of a water-soluble organic precipitant such as methanol or ethanol.  The copolymers of the invention may be plasticized with dialkyl and alkoxyalkyl phthalates, glycolic acid esters, dicarboxylic acid esters of cyclohexanol and its derivatives, sebacic and phosphoric acid esters, butadiene-acrylonitrile copolymers and low molecular weight condensation products of glycols with aliphatic dicarboxylic acids. Films and filaments may be made from acetone solutions of the copolymers and may be dyed by the methods used in dyeing cellulose acetate fibres.  They may be stretched to many times their original length and annealed, e.g. at a temperature above 60 DEG C.  Coating compositions may be made by dissolving the copolymers in volatile solvents or solvent mixtures such as one or more of acetone, methyl ethyl ketone, dioxane, dioxolane, tetrahydrofurane, nitromethane and nitroethane or in less volatile solvents such as cyclohexanone, cyclopentanone, isophorone, mesityl oxide and pyridine, and diluents such as benzene, toluene or a xylene may be added.  Solvent mixtures may also include ethyl acetate, ethyl and butyl lactates, diethyl, methyl isobutyl, and methyl amyl ketones, diacetone alcohol, methylene and ethylene dichlorides, trichlorethylene, carbon tetrachloride, perchlorethylene and monochlorbenzene. Specifications 569,182, 570,711 and 629,137 are referred to.
Patent GB-746484-A (GB)
Title: Conveying apparatus
IPC: B65G19/22
Filed: 1953-03-10
Abstract: 746,484. Endless push plate conveyers. CLARK, I. M. (Burgh, M. L. de). March 10, 1953, No. 6634/53. Class 78 (1). A conveyer for articles such as cans or bottles consists of a surface 12 along which a group of articles 80 is pushed by a U-shaped pusher 78 which may be formed by two arms adjustably secured to a bracket for varying its span, and which is carried by an element 77 slidable along the surface, the element 77 being of magnetic or ferrous material whereby it is caused to move along the surface 12, which is non-magnetic, by magnetic blocks secured at intervals to a driven chain 14 and guided in a channel 13 below the surface 12. Guide members 79 may be provided, the arms 78 sliding on the guide members and co-operating therewith to retain the articles 80 on the surface. Specification 744,292 is referred to.
Patent GB-944849-A (GB)
Title: Improved variable-energy radiation device
Filed: 1961-02-23
Abstract: 944,849. Radiation transmissivity gauges. A. ABBEY. (Industrial Nucleonics Corporation). Feb. 23,1961, No. 6742/61. Heading G1A. For varying the energy from a #-ray source 14, Fig. 1, reaching a material 10 whose properties are being measured in terms of its transmissivity, variable target and collimating means are interposed between the source and the material. This comprises a plurality of different materials 48, 50, 52, and 54, Figs. 5 and 6, having different atomic numbers which have attached a tapered wedge shaped member 56. The materials are each preferably of sufficient thickness to stop 98% of the #-rays and are used as bremsstrahlung radiators energized by the #-radiation from the source 40. The wedge shaped member 56 is provided with cylindrical holes which progressively increase in number and decrease in diameter as the thicker end is approached. Thus as the assembly is moved from having the thin to the thick end of the member 56 in front of the source, the #-radiation reaching the material under test becomes more collimated and attenuated. Similarly, movement of the materials 48, 50, 52, and 54, in the beam alters the characteristics of the radiation reaching the test material as the materials, which may be for example lead, tin, copper, iron, or aluminium, radiate bremsstrahlung of different energies. The perforated portion 56 may be of uniform thickness if the holes are of different diameters or may have holes of equal diameter if the thickness varies. The thickness variation may be insteps, Fig. 8 (not shown), and the device may be circular and rotated in the path of the #-radiation, Figs. 9 and 10 (not shown), instead of undergoing linear motion. For use in the measuring apparatus of Fig. 1 the device may be moved by a servo-system, for example to maintain constant the output of the detector 12 which may be an ionisation chamber. Alternatively the magnitude of the output from the detector 12 is indicated directly by a meter 24 or the meter reading is maintained at a predetermined value by a backing-off voltage set by a control 20. Specifications 689,857, 873,629 and U. S. A. Specification 2,629,831 are referred to.
Patent GB-526813-A (GB)
Title: Improvements in or relating to hair-waving apparatus
IPC: A45D4/10
Filed: 1939-03-02
Abstract: 526,813. Hair-waving appliances ; stoves. GAS LIGHT & COKE CO., DIETERICHS, W., and STEVENS, G. A. C. March 2, 1939, No. 6886. [Class 131] [Also in Group XI] A heater for heating tress clips, used in a hairwaving process, prior to application of the clip to the hair comprises a number of metal heating elements for the clips disposed externally of a wall and thermally connected to internal heattransmitting means (for example, metallic fins or a fluid) disposed in or around a stream of hot gases generated by a central burner. As shown in Fig. 2, a hollow column 45 supports a cylindrical casing 10 heated internally by a gas ring 41 and lagged at the top and bottom by insulating cement 18, 37. A number of copper rods 25 pass radially through the casing to vertical brass rods 22 which are thus heated by conduction and, in turn, heat the tress clips temporarily applied to them. The gas is supplied through a pipe 3 and is controlled thermostatically. The heat-responsive device of the thermostat is situated inside a vertical .brass tube replacing one of the brass rods 22, and a similar brass tube accommodates a thermometer. In a modification, the radial rods 25 are dispensed with and the casing is provided with internal and external fins 43, 44, Fig. 4, the outer extremities of the external fins terminating in the vertical heating rods 22. In a further modification, Fig. 6, a single gas burner 62 maintains a circulation of oil through brass tubes 60 as indicated by the arrows. Electrical heating may be used instead of gas heating.
Patent GB-454661-A (GB)
Title: Improvements in or relating to methods of manufacturing hollow metal articles
IPC: B23K9/00
Filed: 1935-04-05
Abstract: 454,661. Making hollow - ware. WEBBER, O. T., 53, Manchester Street, Marylebone, and BENHAM & SONS, Ltd., 66, Wigmore Street, both in London. April 5, 1935, No. 6929. [Class 83 (ii)] In the manufacture in sections of hollow articles such as domestic sinks from the less ductile metals such as stainless steel, at least one of the sections is of predetermined dimensions and provided with a curved flange or flanges at the bottom or sides, the sections being welded together but not at the curved part. In Fig. 1 a part of a bottom section 1 with a curved part c is shown being welded to an upper part 2 along a line 6 away from the curved part. The sections of the sink are placed over a suitably shaped core 3 and maintained in position by clamps and chill plate sections 4, 5. An aperture is left for welding and a rolling device 8 is mounted on a track 9 to press against the work. A leafspring 19 adjustable by means of a screw 11 presses the roller against the work and a handle 12 or electric motor serves to traverse it. In Fig. 2 is shown a dished base with integral end walls 16, 17, the side walls being subsequently added by welding. In another construction central U- shaped sections are welded to end sections.
Patent GB-1109512-A (GB)
Title: Temperature testing of an aggregate
Inventor: RUSSELL WILLIAM LOWRY
IPC: G01K13/02
Filed: 1965-02-17
Abstract: 1,109,512. Mounting thermometers. MINISTER OF TRANSPORT. May 16, 1966 [Feb.17, 1965], No.6929/65. Headings G1D and GIN. The temperature of a granular aggregate which is being heated in a rotatable drum for mixture with tar or bitumen to provide road building materials, is measured by providing in the drum a trough 21, containing a temperature measuring device 28, pivoted at 24, and positioned so that material cascading in the drum from mixing vanes, as 13, falls successively into a portion 22 of the trough, abutments 26 limiting its pivotal movement, and then on to a portion 23 of the trough thereby tipping it and allowing material to leave by the end 31. The trough thus oscillates under the action of the falling aggregate, the material in the trough being continually renewed. The temperature measuring device may be a thermocouple or the bulb of a remote reading thermometer. In an alternative arrangement the trough 21 may be tripped by engagement between a cam 32 provided on the trough and the rotating vanes 13. Other described embodiments provide for the tilting of the trough 21 by use of a hammer operated by pins projecting inside the drum and rotating therewith, or by use of cam plates also fixed and rotating with the drum. Further, the trough 21 may be fixed to its supporting arm 25 and this, by suitable pivotal mounting, may be actuated from outside the drum using a rotating cam or electromagnetically operated mechanism. Also the trough 21 may be replaced by a hopper having an intermittently operated obturator at its lower end, and this may be a counterbalanced door which opens when a predetermined weight of material is present in the hopper, or it may be operated by an electromagnetic or other mechanical mechanism.
Patent GB-572674-A (GB)
Title: Improvements in or relating to movement-control mechanism
IPC: F41A27/12
Filed: 1942-05-22
Abstract: 572,674. Locking rods. NEWTON, N. B. May 22, 1942, No. 6970. [Class 80 (iii)] [Also in Group XXI] A lever 15 for actuating the release valve of a hydraulic locking device of the kind described in Specification 572,673 is operated through a Bowden cable 16 by initial relative movement of a control lever 11 to an apparatus to be operated, such as a gun 10.
Patent GB-734711-A (GB)
Title: Improvements in or relating to broad band high frequency thermionic valve circuits
IPC: H03F3/52
Filed: 1953-03-13
Abstract: 734,711. Valve amplifying circuits. 'GENERAL ELECTRIC CO., Ltd., HUNT, G. J., and KEMP, L. G. March 15, 1954 [March 13, 1953], No. 7021/53. Class 40 (6). A broad-band output stage comprises two- or more-cathode followers with their inputs connected in parallel, the output of each comprising the primary, of a transformer 3, 4 respectively, while the transformer secondaries are connected in.series.. As described, the arrangement feeds into a balanced transmission line 5 and the secondaries are sectionalized and so connected as to maintain the.balance.
Patent GB-719540-A (GB)
Title: Improvements in and relating to electromagnetic interrupters
IPC: H01H50/76
Filed: 1951-03-27
Abstract: 719,540. Electromagnetic interrupters. OAK MANUFACTURING CO. March 27, 1951 (March 27, 1950], No. 7072/51. Class 38(5) In an electromagnetic vibratory interrupter suitable for converting low tension D.C. to high tension D.C. and for use under high temperature conditions, the ferromagnetic frame 10 carrying the pole piece 18 and winding 19 is fixed by means of angle irons 55, 56 to a circular metal plate 60 the edge of which is engaged by the metallic container 65 so that heat can be conducted away readily. The fixed driving contact 36 of the interrupter is mounted on the frame but insulated from it. Specification 460,470 is referred to.
Patent GB-1183180-A (GB)
Title: Fuel Element for Neutronic Reactor and Method of Fabrication Thereof
IPC: G21C3/04
Filed: 1969-02-10
Abstract: 1,183,180. Fuel elements. UNITED STATES ATOMIC ENERGY COMMISSION. 10 Feb., 1969 [29 March, 1968; 21 Nov., 1968], No. 7145/69. Heading G6C. A fuel element comprises a multiplicity of cylindrical fuel pins 1 each deformed into a portion 2 having a rectangular cross-section defining larger and smaller flat lateral faces 3, 4 adjacent to but spaced apart from one end of the fuel pins 1. The fuel pins 1 are disposed in a plurality of adjacent rows with a connecting pin (not shown) transversely penetrating each of the abutting flat lateral faces 4 of the fuel pins 1 in each of the rows. The fuel pins 1 are metallurgically bonded, e.g. by brazing, to each other along the faces 4, the bonding operation also sealing around the connecting pins where they penetrate the faces 4. Where vented operation of the fuel pins 1 is desired, the connecting pins are tubular in form and provided with radial perforations communicating with the interior of each fuel pin. Two different header arrangements for joining a plurality of rows of fuel pins into an integral fuel element are shown in Fig. 5 for illustrative purposes. In practice, only one header arrangement is used in a single fuel element. In one arrangement, the end fuel pin 11 of each row is extended and provided with a second deformed portion 12 similar to the portion 2 but having its long dimension oriented at right angles, and these second deformed portions 12 are joined to one another in a similar manner to the portions 2. A connecting pin 13 passes through the portions 12 and, where vented operation is desired, acts as a gas collection manifold for the fission product gases from the rows of fuel pins. In a second arrangement, a tubular manifold 15 is provided with spaced tubular extensions 16 which mate with an end fuel pin 17 in each row of the fuel pins. The lower ends of the fuel pins are provided with spacer rings 18.
Patent GB-1213574-A (GB)
Title: Improvements in or relating to the manufacture of pneumatic tyres
IPC: B29D30/58
Filed: 1968-02-14
Abstract: 1,213,574. Moulding tyres. DUNLOP CO. Ltd. 14 Feb., 1968 [15 Feb., 19671, No. 7204/68. Heading B5A. An annulus 13 of vulcanizable tread rubber is placed on a former comprising an expansible dummy tyre carcass 8 covered by a rigid belt 10 and a sheet 12 to prevent adherence of the annulus with the belt; this assembly is located centrally within a moulding apparatus comprising plates 2, 14, rings 3, 4 and tread moulding segments 17. The latter are brought into engagement with the plates 2, 14, and the carcass inflated by feeding hot water or steam into a bag 7 to thereby impress the tread pattern on the annulus. The tread supporting region of the former is of substantially greater rigidity than that of the tyre carcass to which the tread is to be attached. The carcass is then deflated and the plate 14 and carcass removed leaving the annulus adhered to the segments 17. The latter are slightly separated by moving them radially outwardly, and a knife passes between adjacent segments to cut the annulus into segments which are spaced apart further to permit the entry of a carcass to which the tread segments are moulded and vulcanized after the apparatus has been re-assembled and the bag 7 again inflated. Each segment 17 is radially displaced by a mechanism including a hook 22 on a screw 24 carried by a support 27 and moved radially by a nut 25. The segments are clamped in their radially innermost positions by a surrounding frusto-conical member.
Patent GB-1017255-A (GB)
Title: Improvements in data handling systems
IPC: G06F15/16
Filed: 1963-02-22
Abstract: 1,017,255. Digital electronic computers. BAILEY METER CO. Feb. 22, 1963 [Feb. 23, 1962], No. 7220/63. Heading G4A. [Also in Division G3] A data handling system for process control utilizes a magnetic drum with tracks for storage of input and calculated data, and programme data, the system comprising a number of sub-systems each operating more or less independently of the others and having its own programme tracks and arithmetic units (where necessary) so that the number of subsystems needing to operate in real-time manner is minimized. As shown, sub-systems 14-24 have tracks on a magnetic drum 10, a further display sub-system 26 receives data from busses 34, 42, 50 and 58 for continuous display of selected data. The drum tracks are each divided notionally into 100 blocks containing each one word of 20 bits, the sync signals S, A, R from 12 corresponding to bits, start of word, and start of revolution respectively. The subsystems in general operate to read and write data in their storage tracks in alternate revolutions under control of a single flip-flop receiving R pulses from 12. A counter receiving A pulses indicates the word currently available at the read-write heads, which corresponds to one of the input variables supplied to switch 30. The inputs are dealt with in turn under control of programme data from 28; in about 6 drum revolutions one of them is selected, the variable is digitized, and transferred into its appropriate word position in 32, whence it is read out on alternate revolutions to bus 34. Alarm subsystem 16 compares, in alternate revolutions, input data with reference limits recorded in 38 and records alarm signals in 40; these are available, again in alternate revolutions, on bus 42. Averaging sub-system 18 operates in similar manner to compute average values in accordance with a programme in 44 and record and make available on bus 50 the results, and computer sub-system 20 derives functions of the data available on the busses. Printer 60, which may be controlled by an independent clock as well as by programme data from 62, prints out selected data from the busses, and control sub-system 24 makes available signals for control of the process, which may for example be electrical generation from steam power.
Patent GB-230870-A (GB)
Title: Improvements in and relating to safety devices for guns
IPC: F41A19/13
Filed: 1925-03-17
Abstract: 230,870. Pantoflicek, B. March 17, 1924, [Convention date]. Ordnance breech mechanism.-To prevent flame and gases from penetrating the breech mechanism, the firing-pin is formed with a back-pressure valve and with a piston in front of the valve. As shown, the rebounding firing pin 5 is formed with a valve surface 7, adapted to engage a valve seating 8, and with a piston 3 sliding in a cylindrical bore 9. The point of the firing pin when in the rear position lies flush with the face of the breech. The firing pin is mounted in a removable plug 1 having a flange 2 engaging a corresponding surface on the breechpiece 4.
Patent GB-1021893-A (GB)
Title: Plant treatment process
Inventor: PFEIFFER RUDOLF KOLSMAN
Filed: 1962-02-23
Abstract: Growing sugar cane is sprayed, not more than 2 months before harvesting, with a substituted benzoic acid herbicide or a salt thereof. The herbicide may be a dichloro-, trichloro- or tetrachloro-benzoic acid, a methoxy-halobenzoic acid a nitro-halo-benzoic acid an amino-halo-benzoic acid or an alkyldichlorobenzoic acid. The acid may be a pure or crude single substance or a mixture of acids either free or in the form of sodium, potassium, ammonium, copper, chromium, magnesium or amine salts.  The spray may be in the form of an aqueous or organic solvent solution or suspension, or a dust which may also contain clay, sand, mica or a fertilizer. Fungicides, pesticides, plant growth regulants, other herbicides, wetting agents and anti-flocculants may also be present.
Patent GB-652301-A (GB)
Title: Improvements in or relating to tubular metal scaffolding
Inventor: HAWES ALBERT HENRY
IPC: E04G5/14
Filed: 1948-03-10
Abstract: 652,301. Screw clamps. KWIKFORM, Ltd. March 10, 1948, No. 7301. [Class 44] [Also in Groups I and X] U-shaped clamps 16, Fig. 1, with clamping screw 28 secured to the upper ends of tubular uprights 15 carried by a scaffolding structure 10, 12, secure in position a guard rail 14 for the platform 11. Each clamp 16, which may be formed in two halves, has a spigot 26, Fig. 2, secured to the upright 15 by a force fit or by welding and has an internally threaded boss 27 receiving the screw 28 and provided with a spigot 29 adapted to extend into a second guard rail tube 30, e.g. at a corner of the platform 11. The spigot 29 may be replaced by a socket. The lower end of each tube 15 has a boss 18 and a clamping screw 19 for engaging a spigot 13 of the frame member 12 and integral with the boss 18 is a clip 20 engaging a toe board 21 on the platform 11. A vertical support 32, Fig. 1, for carrying lifting tackle may be secured to the tube 15 by a clamp 33, the support 32 engaging in a recess in the clamp 16. According to the Provisional Specification the spigot 26 may be replaced by a socket. Specification 581,429 and 642,367, [both in Group X], are referred to.
Patent GB-1469231-A (GB)
Title: Memory arrangement for a page printer
IPC: G06F12/02
Filed: 1973-02-07
Abstract: 1469231 Printers; data storage MULLARD Ltd 16 April 1974 [14 Feb 1973] 7302/73 Headings G4H and G4C The invention is a memory (for a page printer) having addressing counters which can be connected in different arrangements by switches. In Fig. 2, 25 lines of 80 characters (each of 8 bits) per line, are received serially by line, character and bit, at I/P, and stored in sixteen 1024-bit memory units Mc1-Mc16, the 1st- 8th lines each being split between units Mc1- Mc5 on the basis of 16 characters per unit per line, the 9th-16th and 17th-24th being similarly placed in Mc6-Mc10, Mc11-Mc15, and the 25th in Mc16. For this purpose clock pulses CP drive a chain of counters C1, C2, C3, C4, C5 of 3, 4, 3, 3, 2 bits respectively, with decoders D1, D2, D3, as shown, the switches S1, S2 being being in the positions shown, counter C1 selecting bits within character, the memory units Mc1-Mc15 being selected by decoder D2 and unit Mc16 being selected by the last output of decoder D3. For read-out to a read-only memory control a matrix page printer, the switches S1, S2 are reversed so that the first character of each line is read out, serially by character and bit, pulses CP driving C1 which drives C4 which drives C5, for this purpose, this being done 42 times viz. 7 x 5 times for the matrix build-up of each character plus 7 x 1 times for a space between characters. Then an end-of-character signal EOCHC drives C2 which drives C3, to select the second character position, which is read out for all the lines in turn, 42 times, as before, and so on. Variations in the numbers of lines, characters per line, and memory units, are mentioned.