baber/WOPTO huggingface dataset:
Patent GB-471750-A (GB)
Title: Drawing-off or detaching device for combing machines of the heilmann type
IPC: D01G19/14
Filed: 1936-03-09
Abstract: 471,750. Combing-machines. SACHSISCHE TEXTILMASCHINENFABRIK VORM. R. HARTMANN AKT.-GES. March 9, 1936, No. 7043. Convention date, April 18, 1935. [Class 120 (i)] In order to arrange the clamping point of the detaching anc drawing - off device in a Heilmann comb. ing-machine, as close ly as possible to the top comb e, a stationary block i, Figs 1 and 2, is substituted for one of the pair of drawing-off rollers and is formed with a projecting lip o extending partly around the other roller. In one form the belt f which cooperates with a roller h is guided round the stationary block i, Fig. 1. A guide roller (or rollers) k may be provided. In a modification the block i is pivoted at n, Fig. 2, and is pressed downwards on to the belt f by a spring m.
Patent GB-1061542-A (GB)
Title: Process for depolymerizing polyethylene terephthalate to terephthalic acid dimethyl ester
IPC: C08J11/00
Filed: 1965-02-18
Abstract: Dimethyl terephthalate is obtained by reacting polyethylene terephthalate with 2-8 times its weight of methanol (optionally in presence of catalyst) at 160-240 DEG  C. and 20-70 atm. gauge pressure in two stages:  -(1) in which partial reaction is effected by stirring in an autoclave for an average residence time of 7-13 minutes and (2) in which the reaction is completed at the same pressure without further application of heat in a large reaction tube, into which the effluent from (1) is passed through an overflow and an immersion tube ending at or near the bottom of the reaction tube, and in which the mixture ascends at a slow enough rate to avoid turbulence and without stirring.  The pressure of the solution is then released to 3 atm. gauge, the mixture transferred to a stirring vessel at 100 DEG  C. and the pressure released to normal.
Patent GB-1418852-A (GB)
Title: Drives for automatic transfer mechanisms in press lines
IPC: B21D43/13
Filed: 1974-02-18
Abstract: 1418852 Transfer devices L SCHULER GmbH 18 Feb 1974 [21 Feb 1973 7 July 1973] 7230/74 Heading B8H [Also in Division F2] A transfer mechanis mcomprises a carriage 2 movable along a track 1, the carriage 2 being driven from a drive for a press 4 by means of bevel gears 5, 6 which are connected via a drive train to the carriage 2, the drive train which consists of a system of links and levers being kinematically arranged to provide two dwells in the motion of the carriage 2 at positions I and II. The bevel gear 6 is connected by a drive crank 7 to one end of a connecting link 8 which is guided by a rocker arm 10 which is pivoted to the frame of the press 4, the other end of the link 8 being connected at 11 to a link 15 which is pivoted at 16 to one end of a bell-crank rocking lever 17 which is pivotally mounted on the press 4, the other end of the rocking lever 17 being connected to a lever 18 which is connected at its lower end to a bell crank lever 19, the latter being connected by a drive link 20 to the carriage 2 so that the press drive to the bevel gears 5, 6 is thus transmitted to the carriage 2. The path 12 of the connection 11 includes two spaced arcuate sections 13, 14 with equal radii R I , R II , which are each equal to the effective length of the link 15, the motion of which is constrained by the rocking lever 17, so that the motion of the connection 11 along the two arcuate portions 13, 14, which results in each case in the rotation of the link 15 about the pivot 16, has a centre which is stationary and is located at the centre of curvature of the respective arcuate portions 13, 14, such action producing two dwells in the movement of the rocking lever 17 and this also in the movement of the lever 18 and the carriage 2. A workpiece turn-over device 27 associated with the carriage 2 is mounted for rotation about the shaft of a gear-wheel 36 which is in mesh with a gear segment 35 which is attached by means of a lever 33, guide rod 32, bell crank lever 30 and a coupling rod 26 to a slide 24 in a guide bar 21 which is fixedly secured to the rocking lever 17 whose movement produces the rotation of the gear-wheel 36 and thus the rotation of the device 27. The position of the slide 24 in the guide bar 21 is adjustable by means of a motor 29 which drives a screw 28 which engages with an internal thread in the slide 24. It is stated that the device 27 and carriage 2 are provided with grippers for engaging a workpiece.  In a second embodiment, Fig. 2 (not shown) the workpiece turn-over device (27) is rotated by means of a sprocket wheel (44) connected by a chain (43) to a sprocket wheel (42) rotated by movement of coupling rod (26).
Patent GB-291894-A (GB)
Title: Thermionic amplifiers
IPC: H03F1/08
Filed: 1927-03-15
Abstract: 291,894. Stenning, H. J., and Edison Swan Electric Co., Ltd. March 15, 1927. Thermionic amplifiers and detectors. - In a resistancecoupled high-frequency amplifier, the plate of one valve is connected to the tuned grid circuit of a succeeding valve through a condenser of low impedance compared with the coupling resistance and with the impedance of the plate-toearth capacity of the first valve; and reaction is controlled by varying the coupling between the grid and plate circuits of the first valve, or the damping in either or both of these circuits. As shown in Fig. 2, the plate circuit of the first valve VI includes a resistance 5, and the plate is connected to the grid of the second valve V2 through a condenser 6, which may be of 0.1 microfarad capacity, the impedance of which is small compared with the resistance 5 and with the impedance represented by the plate-filament capacity of the valve V1. The input to the valve VI may comprise a tuned frame aerial, or a tuned open aerial; as shown the tuned circuit 2, 12 has its mid-point earthed and capacity coupling between the plate and grid circuits is neutralized by a balancing condenser 11. The tendency to oscillate may be regulated by varying the resistance 5; by varying the coupling between grid and plate circuits; by potentiometer control of grid current in the valve VI; or by variable resistances in the tuned circuits. The grid circuit of the second valve V2 comprises a tuned circuit 7, 8. The valve V2 may be an anode-bend detector; or it may function as a grid-leak detector with reaction afforded by a plate coil 17 coupled to the coil 7. The resistance 15 mav be lower than that for the first valve, and may be shunted by a small condenser 16. In a modification shown in Fig. 3, the second and third valves V2, V3 have their grids directly connected, the plate circuit of the valve V2 having a coil 17 for reacting on the grid circuit 7, 8; whilst the third valve functions as an anode-bend detector. The circuit of Fig. 4 employs two stages of high-frequency amplification, and the grid circuits of valves VI, V2 are each neutralized. Reaction is obtained by increasing the capacity of the condenser 19 beyond its balancing valve. Specification 151,346 is referred to.
Patent GB-689309-A (GB)
Title: Improvements in or relating to the firing of furnaces with liquid fuel
IPC: F23D11/10
Filed: 1950-06-13
Abstract: 689,309. Burners. PRIEST, C. F., and KNIBBS, N. V. S. June 13, 1950, No. 7268/52. Divided out of 689,236. Class '75(i) [Also in Group XII] In a lime kiln or like furnace adapted to be fired by liquid fuel, a long. flame which does not overheat the kiln walls is obtained by discharging atomized fuel into a number of tuyere-like burners 33 disposed in a furnace wall 34 and supplied with combustion gases from a bustle pipe 31 formed with valve-controlled ducts 32 leading to the said burners. Each atoiiiizer 36 is formed with a spider 37 terminating in a cylindrical skirt 42 which leaves an annular space 43 between the skirt and the burner wall. The combustion gases are supplied either from the furnace itself or from another source.
Patent GB-658121-A (GB)
Title: Improvements in filling thread laying mechanism for sewing machines
IPC: D05B35/06
Filed: 1949-03-17
Abstract: 658,121. Sewing-machines. MAN-SEW CORPORATION. March 17, 1949, No. 7355. Convention date, April 5, 1948. [Class 112] Cord guides.-A guiding-finger 84 for a surface cord to be concatenated with the stiches in a zig-zag sewing machine with a transverse needle-vibrating shaft 44 is carried by a member 80 pivoted at 88 and connected to a lever 105, on a horizontal pivot 100, oscillated by the shaft 44; the pivot 88 may be transversely movable by a pattern cam, the connection between the member 80 and the lever permitting this movement without affecting the operation of the member. The device is shown incorporated in a machine having means for shifting the field of needle vibration by means of a pattern cam 40 driven from the shaft 44 is described in Specification 634,525. The lever 105, oscillated by a cam 108 on the shaft 44, has its two arms relatively adjustable, and is connected to a rod 111 sliding vertically in guides 116 and prevented from rotating by a fork 114 embracing a fixed rod 120; the lower end of the rod 111 adjustably carries a member 121 in the form of a horizontal channel open to the front, and a block pivoted on the member 80 slidably engages this channel. The cam 108 may be placed on the shaft 44 in such a position that the finger 84 moves in the same direction as the needle or in the opposite direction. The pivot 88 of the member 80 is carried by a block secured to a bar 90 sliding in a bracket 91 fixed to the presser-bar 30, and the bar 90 is linked to an arm actuated by the pattern cam 40 so that the cord is always laid in the same position relatively to the field of vibration of the needle
Patent GB-313210-A (GB)
Title: Improvements in vases and like household ornaments or articles of utility
IPC: A47G7/06
Filed: 1928-03-09
Abstract: 313,210. King, E. B. March 9, 1928. Ornamenting.-Decorative materials are applied to the inside surfaces of f1ower vases or 1ike articles made of transparent materia1s, a covering of fibrous material, such as paper or textile fabric,. is applied over the decoration, and a waterproof protective coating is applied over the fibrous covering. The decoration mav consist of butterf1y wings or parts of wings alone or in combination with textile fabrics, painting, or vitreous moulded or other forms of decoration applied to the interior or exterior surfaces of the article. The wings &c. may be secured by an adhesive, such as gum arabic. The waterproof coating may consist of shellac or wax app1ied in a molten or plastic state and a11owed to harden; alternatively, bituminous compounds, pitch, &c. may be app1ied cold and a11owed to set, or a metallic coating may be applied by e1ectrodeposition. Two or more coatings with or without interposed layers of fabric &c. may be applied and built up or moulded to give any required shape to the interior, and the coating may be extended to cover the rim of the vase and serve as a cement for holding a metal mounting in p1ace.
Patent GB-959237-A (GB)
Title: Improvements relating to retardation plates for polarised radiation
Inventor: DYSON JAMES
IPC: G02B5/30
Filed: 1962-02-26
Abstract: 959,237. Hydraulic accumulators. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 13, 1963 [Feb. 26, 1962], No. 7453/62. Heading F1P. [Also in Division G2] A pump is provided to force oil under pressure through a tube and the Figure shows a gas ballast in the pump circuit to reduce the effect of temperature changes on the oil pressure. Cylinders 22 and 23 are connected by channels 26, 25, 27 and the oil and gas in the tops of cylinders 22, 23 respectively are separated by mercury and by a seal 32 floating on top of the mercury in cylinder 23. The gas is forced under pressure through inlet 29 into cylinder 23 to form a cushion and the oil passes through inlet 34 into cylinder 22 and through outlet 35 on its way to the above mentioned tube.
Patent GB-782825-A (GB)
Title: Improvements in induction heating apparatus
Inventor: BLAKE LESLIE REGINALD
IPC: H05B6/10
Filed: 1954-03-15
Abstract: 782,825. Induction heating. BRITISH THOMSON-HOUSTON CO., Ltd. June 6, 1955 [March 15, 1954], No. 7469/54. Class 39(3) Apparatus for heating by induction the rims of discs of electrically conducting material comprises a laminated magnetic core 1 having polar projections 2 each  carrying a winding 3 and a stack of laminations 13, thin insulation preventing the stack from short-circuiting the laminations of the projection 2. A laminated yoke 4 has magnetic sleeves 6 corresponding to the lamination stacks 13 each of which has a greater cross-sectional area than that of a projection 2, the sleeves 6, which are preferably of magnetic sheet material wound into a short poly-cylinder, being secured on the yoke 4 by non-magnetic members 9, 10 and bolts 7. The core 1 and the yoke 4 are relatively movable to permit insertion between them of the discs 5 to be treated. Three-phase current supply to the windings 3 may be 50-400 c.p.s. but is preferably 200-400 c.p.s; it may be derived from a -normal commercial supply via a frequency changer. The apparatus may be adapted for single phase operation.
Patent GB-287057-A (GB)
Title: Improvements in amusement devices
IPC: A63G11/00
Filed: 1928-03-12
Abstract: 287,057. Flesselles, W. F. March 11, 1927, [Convention date]. See-saw roundabouts.-A see-saw adapted also to revolve horizontally comprises a base 8 bolted to cross-pieces 7 and carrying a vertical pivot pin about which rotates a sleeve 11 having a pair of horizontal bearing pins 12 on which are pivotally supported the arms 25 of a bracket 13. Supported on this bracket is a platform 14 having members 16 in which are slidably adjustable see-saw arms 15 having seats 20, handles 22, castors 24, foot rests 23. Arms 17 on the bracket 13 carry clamping screws 18 for holding the arms 15 in their adjusted positions. Baskets to hold small children may be attached to the seats by means of the holes 21. In a modification, the members 16 are replaced by U-shaped members attached to the platform 14 and carrying champing screws.
Patent GB-544629-A (GB)
Title: Improvements in and relating to stops for lathes
IPC: B23B13/12
Filed: 1941-06-19
Abstract: 544,629. Turning. FREEMAN, H. H. June 19, 1941; No. 7764. [Class 83 (iii)] A stock stop for lathes has a shank 1 machined to a form for reception in the turret or tailstock. The work-contacting end 11 is rotatably mounted on the head 6 of the stop with an interposed ball race. The head is adjustable in the shank by a micrometer screw 5, has a graduated part 14 coacting with an index mark 4 or with a pointer fixed to the shank, and is locked at 7 after adjustment.
Patent GB-1087769-A (GB)
Title: Process for the reduction of uranium hexafluoride
Inventor: LEVEL ALBERT
IPC: C01G43/06
Filed: 1965-02-23
Abstract: UF6 is reduced to UF4 by injecting it under pressure into a sealed chamber containing hydrogen and maintaining the mixture at 150 DEG to 500 DEG  C. and above 10 bars, until reduction is complete.  The H2/UF6 molar ratio is at least 1, e.g. up to 5 and up to 3% by weight of ClF3 may be added to the mixture.  The UF6 may either be admitted in a single injection to the chamber filled with hydrogen and the mixture raised to the reaction temperature, or the UF6 may be injected in successive batches, the time lag being sufficient for the reduction of one batch.  In the latter case the batches of UF6 may be injected into a chamber filled with hydrogen, or alternately with successive hydrogen injections.  The reaction is effected in an autoclave provided with a valved hydrogen inlet and UF4 powder recovery pipe.  A spring-operated, needle controlled injector for supplying liquid UF6 at 80 bars in metered quantities is provided, and the pressure is produced by pressurized N2 operating a diaphragm pump. This injector may be operated by a timing mechanism.  The bulk density of the UF4 may vary from 0.2 to 3.
Patent GB-893595-A (GB)
Title: Improvements in or relating to the removal of polymers from solvents selective for diolefins
IPC: C07C7/10
Filed: 1960-03-04
Abstract: In the separation of acetylenes from a hydrocarbon mixture containing a conjugated diolefin by contacting the mixture with a cuprous ammonium salt solution to absorb acetylenes followed by stripping the acetylenes from the solvent, polymeric substances are removed from the lean solvent by contact with a conjugated diolefin at above 25 DEG C. and at a weight ratio of solvent to diolefin between 10 : 1 and 1 : 1.  In the separation of acetylenes from butadiene with a cuprous ammonium salt solution the lean solvent after stripping off the acetylenes is contacted with butadiene before re-use or use in the main extraction of butadiene.  The butadiene contacted with the lean solvent may contain up to 40 mol per cent. of the other hydrocarbons.
Patent GB-900200-A (GB)
Title: Improvements in and relating to electric incandescent lamps
IPC: H01K1/50
Filed: 1961-03-03
Abstract: 900,200. Incandescent electric lamps. UNION CARBIDE CORPORATION. March 3, 1961 [March 11, 1960(2)],No. 7822/61. Drawings to Specification. Class 39 (2). An incandescent lamp has a filament containing a major proportion of tantalum carbide in an atmosphere comprising at operating temperature hydrogen, vaporized carbon and at least two halogens, one of which is bromine or iodine, the atmosphere being substantially free from oxygen. An inert gas of low heat conductivity may also be present. The atmosphere may contain an excess by volume of hydrogen and halogens over carbon vapour and an excess of hydrogen over halogens. The components of the atmosphere may be provided by including suitable sources of the components in the bulb. One at least of the halogens may be provided by including a metal halide such as a halide of rubidium, cobalt, tin, silver, cadmium, aluminium, copper, zinc, mercury, nickel or cerium. In examples: (1) carbon tetrachloride, methyl iodide or bromide or rubidium iodide or bromide; (2) ethylenediamine hydrochloride or methylamine hydrochloride with bromine or iodine or a compound thereof; (3) a hydrocarbon such as ethylene, hydrogen chloride and bromine or iodine or a compound thereof such as ethyl bromide or iodide, hydrogen iodide or cobalt iodide; (4) hydrogen, a hydrocarbon such as ethane, methane or ethylene and a mixture of halogen or halides, e.g. chlorine and iodine or chlorine and rubidium bromide; (5) iodine or bromine or compounds thereof, hydrogen and a halogenated hydrocarbon such as benzene hexachloride, carbon tetrachloride, carbon tetrabromide, tetrachloroethane, tetrachloroethylene, dibromochloromethane, trichlorobromomethane or trichloroiodomethane may be used. The filament may initially be of pure tantalum, being converted to tantalum carbide by passing a current through it in situ to produce a temperature of 3500‹ C. The leading-in wires may be of tantalum or rods of carbon, tungsten, platinum, palladium or rhodium or of metals coated with platinum, palladium or rhodium may be used. The inner surface of the bulb envelope may be protected from attack by a coating of calcium fluoride, e.g. by evaporating this material on to the inner surface. The invention may be applied to headlamps of the sealed beam type.
Patent GB-287115-A (GB)
Title: Improvements in the preparation of oil varnishes containing resins
IPC: C09D191/00
Filed: 1926-11-08
Abstract: 287,115. I. G. Farbenindustrie Akt.- Ges. Nov. 9, 1925, [Convention date]. Divided on 261,039. Varnishes of the oil resin type contain benzine obtained by the destructive hydrogenation of carbonaceous materials, or the cracked, polymerization, dehydrogenation or demethylation products of such benzine. In an example 10 1b. of linseed oil varnish containing gum kauri is dissolved in 10 lb. of benzine obtained by the destructive hydrogenation of lignite or of crude American mineral oil. Specification 287,116 is referred to.
Patent GB-1218076-A (GB)
Title: Backing strip for attachment to an article made of foamed plastics
Inventor: PEARSON ARTHUR STANLEY
IPC: A47C31/02
Filed: 1968-02-20
Abstract: 1,218,076. Spiked plates. CARR FASTENER CO. Ltd. 11 Dec., 1968 [20 Feb., 1968], No. 8189/68. Heading F2H. [Also in Division A4] A spiked plate comprising a plurality of studlike elements 2 extending from a base 1 and provided with axially spaced lateral projections 3 is moulded in one piece from synthetic plastics material. The lateral projections may be formed by frusto-conical portions or by barbs and the spiked plate may be secured to an article of foamed plastics material to which upholstery is to be attached.
Patent GB-1306254-A (GB)
IPC: G03B27/58
Filed: 1970-02-20
Abstract: 1306254 Feeding sheets SCM CORP 20 Feb 1970 [20 Feb 1969 (2)] 8200/70 Heading B8R The sheet feeding mechanism of a photo. copying machine is constructed so that upon raising the lid of the sheet feeding compartment the feed mechanism is moved away from the pile position to permit insertion of a new pile. The feeding mechanism comprises advancing rollers 53 and 55 and retaining members 75 which press on the top sheet of the pile. Raising of lid 17 causes lifting of the advancing rollers and the retaining members away from the pile position. A front stop 117 is simultaneously pivoted into an upright position to assist registration of a new pile.
Patent GB-110518-A (GB)
Title: Improvements in the Manufacture of Wood Heels and Soles for Boots or Shoes.
Inventor: BUCKLAND VIRGOE
IPC: A43B21/00
Filed: 1917-06-09
Abstract: 110,518. Buckland, V. June 9, 1917. Heels; soles. - A wooden heel comprises a number of layers cemented together and subjected to pressure, and further secured by one or more screws a passing through all the layers. The invention is applicable also applicable to soles.
Patent GB-294556-A (GB)
Title: Improvements relating to means for the interconversion of mechanical and electrical oscillations
IPC: H04R11/00
Filed: 1927-03-25
Abstract: 294,556. Parry, R. D. March 25, 1927. Magnetic instruments.-Apparatus for converting sound vibrations into corresponding electric currents, or vice versa, comprises a permanent magnet 8 with a light pivoted pole-piece 3, a speech-current coil 4, a continuously-moving conducting member 5 in which eddy-currents are induced, and a diaphragm 6 or stylus connected to the pivoted pole-piece 3. The member 5 may be a disc rotated by a motor and extending between the poles of the pole-piece 3, which is pivoted on a pin 9 carrying the coil 4. The eddy-current drag exerted by the disc 5 on the pole-piece is balanced by the mounting 14 of the diaphragm 6, and variations in the current through the coil 4 vary the drag effect and cause the diaphragm to vibrate. Similarly, vibrations of the diaphragm, or of a stylus, cause the current in the coil 4 to fluctuate. The disc 5 may be driven by the motor of a gramophone when sound is being recorded on, or reproduced from records.