baber/WOPTO huggingface dataset:
Patent GB-803240-A (GB)
Title: Improvements relating to current limited rectifying systems employing magnetic amplifiers
IPC: H03F9/04
Filed: 1955-10-07
Abstract: 803,240. Automatic voltage and current control systems. STANDARD TELEPHONES & CABLES, Ltd. Oct. 7, 1955 [Oct. 11, 1954; March 24, 1955], No. 28622/55. Class 38 (4). An automatically-regulated D.C. supply of the kind in which a saturable reactor is in series with a rectifier and in which constant voltage control is superseded by constant current control once a limiting current is reached, consists of the combination of all the following features. A portion of the output voltage of the main rectifier W1 is tapped off a potentiometer R2 and applied to a control winding 3 on a selfsaturating magnetic amplifier L2 in opposition to a reference voltage derived from a source CVS. The reference voltage is arranged to be normally greater than the voltage from potentiometer R2 so that rectifier W2 conducts. The output of the magnetic amplifier L2 is applied to the control winding of the main saturable reactor L1 by way of a bridge rectifier W5 which minimizes A.C. components being fed back from the control winding of reactor L1 to the amplifier L2 as in Specification 803,239. The voltage appearing across one arm of the bridge rectifier W5 is fed back to a stabilizing winding 9 on the amplifier L2 as in Specification 803,239. The reactor L1 is thus normally controlled via the amplifier L2 to maintain the output voltage of the rectifier W1 constant. The input current to the rectifier W1 is measured by a current transformer T2, the output of which is rectified at W6 and applied in series with a rectifier W7 and the voltage across potential divider R2 to a control winding 10 on the amplifier L2. Then when the output voltage of rectifier W6 exceeds that across R2, rectifier W7 conducts and energizes winding 10 to tend to maintain the input current to the main rectifier W1 constant at the value reached. The voltage control winding 3 on amplifier L2 is shunted by a rectifier W8 so as to limit the signal that can be passed through the winding 3 when the system is operating in the current limiting mode. In a modification, Fig. 2 (not shown), the current limiting signal is superimposed on the main. A.C. windings of the magnetic amplifier, and several slight modifications are made to the remainder of the circuit. Specifications 665,335, 745,796 and 803,241, [Group XXXIX], also are referred to.
Patent GB-322837-A (GB)
Title: Improvements in or relating to blasting cartridges
IPC: F42B3/00
Filed: 1928-10-05
Abstract: 322,837. Hodge, D. Oct. 5, 1928. Blasting and mining cartridges and fuzes.-A blasting cartridge of the type charged with a medium under pressure in liquid form which is gasified at ordinary temperatures and pressures and also with an explosive mixture for causing gasification, as described in Specification 313,333, is so designed that the explosive reaction starts at a predetermined point or points in the explosive mixture whereby the velocity of heat liberation may be controlled. It is stated that directly the critical temperature has been progressively developed and the cartridge discharged, further ignition is extinguished by the reduction of the temperature caused by the expansion and evaporation of the liquefied gas. As shown, the firing may be started in the cartridge p at a point or points by a squib t, or a match head, or a fusing wire connected by a copper wire r to a source of electricity through spring contacts s. Only a portion w of the heating element may be filled with explosive mixture, the remainder x being filled with a chemically inactive material such as Fuller's earth. The heating mixture consists of sodium chlorate 81 per cent, aluminium 13 per cent, and wood charcoal 6 per cent.
Patent GB-749130-A (GB)
Title: Improvements relating to vertically-movable vehicle windows
Inventor: OLDHAM FRED ALEXANDER MAUGHAM
IPC: E05F11/38
Filed: 1953-10-17
Abstract: 749,130. Vehicle windows. HALLAM, SLEIGH & CHESTON, Ltd. Jan. 5, 1955 [Oct. 17, 1953], No. 28704/53. Class 20(3). A vertically-movable vehicle window panel 2, Fig. 1, is mounted in a pan or frame 1 the lower part of which carries, or is combined with, a well 5 extending for the full width of the panel 2, the whole forming a self-contained fitting which may be applied directly to a vehicle body. The well 5 forms a water pocket and is of such a limited depth that it receives only a lower portion of the panel 2 when the latter is fully lowered. The frame 1 has a flange 11 which lies flush with, or on the outer face of, a vehicle body. Two sides of the frame 1 are extended at 6 to form the ends of well 5, and a cross member 4 is at the top thereof. The bottom and one side of the well 5 are formed by an anglesectioned plate 7 secured to members 4 and 8, the latter connecting the ends 6. The other side of the well is formed by a cover plate, 9, Fig. 3, secured to a flange 7a on plate 7, the cover plate having a horizontal sill 9a at its top. The window panel 2 is moved in guides in frame 1 by rocking a lever 13 about its pivot 14 which through link 15 rocks plate 16 about a pivot on bracket 17 thus causing a roller 18 on plate 16 to slide along a channel 19 on the bottom bar 20 of the panel 2 and thus move the latter. A coiled tension spring 21 anchored between the plate 16 and a bracket 24 on one of the members 6 assists in raising the window. The lever 13 has a flexible upper portion 13a projecting through a slot in the sill 9a, the slot having spaced notches into which the lever may be sprung to retain the window in position. A drainage tube may be attached to the bottom of the well 5. In a modification described in the Provisional Specification the window is moved by a bell-crank lever comprising an upstanding operating arm and a lifting arm pivoted to the window.
Patent GB-821065-A (GB)
Title: Improvements in and relating to footwear
Inventor: BUTTON LESTER HENRY
IPC: A43B3/30
Filed: 1956-09-20
Abstract: 821,065. Boots &c. KEMPNER & BRANDON Ltd. Sept. 13, 1957 [Sept. 20, 1956], No. 28804/56. Class 17(2) A shoe has a heel piece 9 stuck to the shoe bottom and provided with an extension 10 sewn at 11 to the heel of the upper. A sole 7 which may have an extension 8 is attached by adhesive. The extensions 8, 10 do not extend to the top of the upper so that it can be curved at 2 as with a normally lasted shoe. A reinforcing strip 6 is also provided. The sole 7 and heel piece 9 can be made of natural or synthetic rubber compositions including crepe rubber or of other material of similar flexibility.
Patent GB-1255850-A (GB)
Title: Fibrous structure
IPC: D06M15/643
Filed: 1969-06-09
Abstract: 1,255,850. Treating fibrous materials. KANEGAFUCHI BOSEKI K.K. 9 June, 1969 [7 June, 1968; 1 July, 1968; 18 Sept., 1968; 28 March, 1969], No. 28995/69. Heading D1P. Fibrous materials are given enhanced crease-resistant and elastic properties in a process which comprises applying a non-aqueous solution of a polyorganosiloxane prepolymer together with a catalyst in an amount such that not more than 10% by weight, based on the weight of material treated, of the siloxane is deposited on the material and then heat treating the treated material at 50-200‹C. The organosiloxane preferably comprises as principal component poly (dimethyl siloxane) diol or poly (diethyl siloxane) diol with a subsidiary component of methyl hydrogen polysiloxane, it may also comprise poly (methyl phenyl siloxane) diol or poly (diphenyl siloxane) diol as principal component. The prepolymer has a degree of polymerisation of at least 50 and the non- aqueous solution may contain 0.1 to 10% of the same which when polymerised gives a polymer having an elongation at break of at least 50%, a tensile strength at break of from 1 to 50 Kg/cm<SP>2</SP> and a Shore hardness of 5-50‹. The solvent for the solution may be toluene, xylene, benzene, perchloroethylene, industrial gasoline, chloroform, methyl chloroform or methylene chloride; the catalyst may be an inorganic acid, an alkali a tin salt of an organic acid e.g. dibutyl tin dilaurate, and may be present in an amount of 0.01-5% by weight based on the polyorganosiloxane. In addition to the catalyst the solution may also contain an accelerator present in not more than 15% by weight such as; an isocyanate of a silane, an alkoxy silane, a silane acetate, benzoyl peroxide, a triol or a vinyl compound. A polyether such as a polyoxyethylene alkyl ether, a polyoxyethylene alkylphenol ether, a polyoxyethylene alkylamine, a polyoxyethylene alkylphosphate, a polyoxyethylene sorbitan fatty acid ester or polyethylene glycol may also be present in the solution in an amount of 1-50% by weight based on the weight of the organosiloxane. The heat treatment subsequent to applying the solution may be carried out for a period of 20 seconds to 60 minutes. Yarns, knitted goods, woven and non-woven fabrics, composed of staple fibres, continuous filaments or mixtures thereof may be treated, ladies' hosiery especially may be treated.
Patent GB-1391594-A (GB)
Title: Manufacture of cakes
IPC: A23G3/28
Filed: 1971-06-21
Abstract: 1391594 Decorating cakes JAHN (HUNTINGDON) LTD and J A HORNBY 15 June 1972 [21 June 1971] 29021/71 Heading A2A A cake-decorating nozzle or nozzles and a cake support are movalble relatively to each other to bring a cake close to the nozzle(s) and to withdraw it on completion of the decorating operation, and suction is applied to the base of the cake during the withdrawal so that the cake does not stick to the nozzle(s). As shown, the support 14 for the cake 13 has a suction chamber and is raised and lowered by a pneumatic piston and cylinder device 16 controlled by a pedal 20. A nozzle head 18 with nozzles 17 is fed by a metering device 19 with cream etc. from a hopper 12. In a modification, four nozzle heads and associated metering devices are arranged transversely above a conveyor which transports a succession of trays. each of which carries four cakes and has apertures in its bottom to register with apertures in the support which extends across the conveyor. The trays are positioned in apertures in the conveyor to permit their upward movement by the support. Movement of the conveyor may be intermittent or continuous, and in the latter case means are provided to allow the support and the nozzles to move with the cakes during decoration. In a further modification the nozzles are moved downwardly towards the cakes by a cam mechanism, and the cake support is simultaneously moved upwards a small amount merely to support the tray as it is brought into position by the conveyor.
Patent GB-1156400-A (GB)
Title: Improvements in or relating to Weighing or Dosing Machines for Material in Bulk
Inventor: LAINCHBURY ERNEST JOHN
IPC: G01G13/24
Filed: 1967-06-15
Abstract: 1,156,400. Weighing apparatus. LAINCHBURY & SONS Ltd. May 30, 1968 [June 15, 1967; June 23, 1967], Nos. 27648/67 and 29041/67. Heading G1W. In an automatic feed weigher comprising a container tiltable between two stable positions and arranged above a structure 3, 4, the structure 3, 4 is fixed to a frame 7 of the weigher and in one position of the container prevents material being fed to the container from being discharged therefrom and in the other position of the container allows such material to be discharged. As shown, the container which is pivotally mounted on a fulcrum 5 is divided into two compartments X, Y which are fed alternately with material from a hopper 10 in such a way that in one stable position of the container one compartment is fed while the other is emptied whereas in the other position of the container the opposite compartments are filled and emptied. The structure 3, 4 which comprises a roof-shaped member 3 and side plates 4 is arranged to prevent material from being discharged from the compartment (X) being fed until a predetermined weight of material is in such compartment. The container then swings to its other stable position whereby material is fed to the other compartment (Y) and the structure 3, 4 co-acts with the container to close the base of the compartment Y and open the base of the compartment X for discharge of material therein. The container may be provided with a barrier plate 9 which prevents material from being fed to the container except when it is in either of its stable portions and a counter 11 which may control the weigher may be provided for counting the oscillations of the container and hence the total amount of material delivered by the weigher. In a further embodiment, a pawl and ratchet mechanism may be arranged to be operated by the osciallations of the container and to release a lever which arrests the container mid-way between its stable positions when a predetermined weight of material has been delivered by the weigher.
Patent GB-1509878-A (GB)
Title: Process for the production of polyolefin fibres
IPC: D01D5/40
Filed: 1976-07-13
Abstract: 1509878 Polyolefin fibrils COMPAGNIE FRANCAISE DE RAFFINAGE and GROUPEMENT EUROPEEN DE LA CELLULOSE 13 July 1976 [25 July 1975 15 Oct 1975] 29097/76 Addition to 1452041 Heading B5B In the process of the parent Specification the tubes in which the temperature of the polyolefin composition comes within the range of the critical temperature of said composition comprise at least one construction which may be in the form of a conical nozzle, a diaphragm or a very short tube whose internal diameter is less than that of the flow tube. Furthermore the diluent for the polyolefin may be a saturated hydrocarbon or a mixture of saturated hydrocarbons in the solidified state at ambient temperature preferably a "paraffin" of melting point 45-66‹ C. or a "wax" of melting point 66-90‹ C. both obtained by refining crude petroleum.
Patent GB-1260796-A (GB)
Title: Improvements in or relating to fluid control valves
IPC: F16K11/085
Filed: 1970-06-16
Abstract: 1,260,796. Valves. GITS BROS. MFG. CO. 16 June, 1970 [9 July, 1969], No. 29155/70. Heading F2V. A fluid distribution valve comprises a hollow body member whose interior 20 is a quadrilateral on a cross-section parallel to a plane through a central axis, the body member having ports (e.g. 80) therein, and valve means rotatably mounted in the interior and having sealing means 24 conforming to said cross-section engaging the inner surface of the body member to divide the interior into two separate spaces 20a, 20b, said sealing means comprising at least two elements 40d, 44d partially overlapping each other. The sealing means, made of carbon, are urged outwardly by springs (50) (Fig. 2, not shown). The cross-section of the interior at right angles to the central axis may be ellipsoidal or undulatory.
Patent GB-716854-A (GB)
Title: Sound track recording
Filed: 1952-11-18
Abstract: 716,854. Recording sound. NATIONAL FILM BOARD. Nov. 18, 1952 [April 24, 1952], No. 29157/52. Class 40 (2). In a recording appara tus for cinematograpl film, the film is providec with a number of paralle sound tracks for simul taneous or selective re production, the individual sound tracks being separately recorded in a corresponding number of consecutive recording operations. In one method described, two separate sources of sound may be recorded simultaneously, one source being recorded direct on to an optical film, and the other being recorded by an interlocked magnetic recorder. During recording of the optical film, a mask as described ih Specification 716,855 is adjusted to expose part only of the width of the sound track area. After the first optical recording has been made, the mask is moved to a second position and the magnetically recorded sound is re-recorded on the second optical track of the film. In another embodiment the magnetic record is first transferred to a separate optical film negative. A negative of the first record is then printed on positive raw stock with the mask suitably adjusted for printing one particular track. The film positive is then run through the printer again and printed with the negative of the other record, the mask being adjusted so that printing is effected in the other half of the sound track area. A means is described and shown in Fig. 5, in which two films may be printed at the same time on rollers 71, 71a, respectively, having sprocket teeth 72, 72a and apertures 73, 73a for passing the printing light beam. Masks 74, 74a are fitted in the apertures 73, 73a so that aperture 73 will only print the left hand portion of the sound track area, while aperture 73a will only print the right hand portion of the sound track area.
Patent GB-1195750-A (GB)
Title: Improvements in or Relating to Oven or Like Closures
IPC: F24C15/04
Filed: 1968-06-19
Abstract: 1,195,750. Oven doors. SKAGERSVIKS INDUSTRIER A.B. 19 June, 1968 [19 June, 1967], No. 29191/68. Heading A2A. [Also in Division F4] An oven door comprises a heat insulated inner part 3 and an outer wall 5 spaced from the inner part to leave a passage 4 extending over the whole area of the door for a cooling air flow from an inlet 7 to an outlet 8. The air inlet 7 co-operates with a channel 13 opening at the bottom of the door frame, and the outlet 8 co-operates with an opening 11 at the top of the door frame, leading to a suction chamber 9 connected through a filter 12 and channel 10 to a fan (not shown). Windows 6 may be formed in both parts of the door. The suction chamber 9 prevents the escape of cooking fumes when the door is open.
Patent GB-506426-A (GB)
Title: Improvements in and relating to methods of and apparatus for the treatment of organically polluted liquids, such as sewage
IPC: C02F3/24
Filed: 1937-10-26
Abstract: 506,426. Treating sewage, and foul waters. HAWLEY, C. G. Oct. 26, 1937, No. 29199. [Class 111] [Also in Group III] Apparatus for aerating sewage or other polluted liquid comprises a number of units 2, Figs. 1 and 2, the walls of which have slots and blades 5, which together form tangential nozzles, the upper ends 4 of the walls being imperforate and extending into a chamber 7. When suction is applied to the chamber 7, air drawn into the elements with a whirling motion and the liquid under treatment, which surrounds the lower ends of the elements, is lifted within the elements in a finely divided state. The liquid, with air in suspension, is collected centrifugally on the walls 4 and passes over on to the bottom of the chamber 7, from which it is discharged through tubes 10 and a liquid seal 11. As shown in Fig. 1 the elements are closed at the base and the liquid enters at the lower ends of the walls. In a modified form of apparatus the elements are surrounded by a casing to which air is supplied under pressure, and the base of each element has a central aperture for the entry of the liquid. Ultraviolet lamps may be arranged axially within the elements. Aerating apparatus as described may be arranged at both the inlet and outlet of a settling-tank in plant as described in Specification 498,814, the air drawn from the cham. bers 7 being passed to the incinerator in which the solid matters are destroyed. In such plant the aerating apparatus is used to treat liquid which has been passed through a rotary strainer as described in Specification 499,021 and the float which governs the speed of the strainer may control also a motor driving a fan which draws air through the aerating apparatus.
Patent GB-1055405-A (GB)
Title: A case or folder having a data chart assembled therein
IPC: G01P1/12
Filed: 1965-07-09
Abstract: 1,055,405. Chart holders. GTV GESELLSCHAFT FUR TRANSPORTUND VERKEHRSWESEN m.b.H. July 9, 1965 [July 23, 1964], No. 29229/65. Heading G5G. Means for recording and/or providing information relating to a transporting operation comprises a folder having covers 1, 2 with aligned apertures 5, 6 therein and tabs 4, 7, and a chart disc 3 having information thereon. The tabs are provided with adhesive so that when the folder is closed they will stick together.
Patent GB-1235925-A (GB)
Title: Twist grip control
IPC: B62M25/00
Filed: 1968-06-19
Abstract: 1,235,925. Twist grips. TOMOS TOVARNA MOTORNIH VOZIL. 19 June, 1968 [22 June, 1967], No. 29323/68. Heading B7E. A twist grip comprises a handle 61 which has mounted therein for rotational movement therewith a cylindrical sleeve 21 formed internally with a double start spiral groove 213, there being engaged with the grooves a slide bar 31 connected with the inner wire 811 of a push-pull cable, the outer sheath 813 thereof being located by a guide socket 41 locked with the end of a handle bar 11 by interengaging lug and socket 416 and 112. Friction pads 91b retain the handle in any set position. In a modification the cable sheath is attached to a bar within the grip and which is located between the end of the handle bar and the sleeve 21. All parts of the grip are adapted to be extruded from plastics. An ornamental ring 71 extends between the handle 61 and the handle bar, and may be replaced by a collar which fits around the handle bar but within the handle and is held in place by being formed in part as a split ring urged to grip the handle bar by a ring. In a further modification the friction pads are located between the handle bar and handle.
Patent GB-695821-A (GB)
Title: Improvements in or relating to cutting and abrading tools
IPC: B23D71/00
Filed: 1950-11-30
Abstract: 695,821. Milling; planing; making files, milling-cutters, graters, &c. BOOTH, C. H., and HARDWICK, H. B. Sept. 14, 1951 [Nov. 30, 1950], No. 29399/50. Addition to 666,573. Classes 83 (ii) and 83 (iii). [Also in Group XXIII] A cutting element for use as a file, rasp or cutting band or clisc, as described in Specifications 666,621 and 666,622, comprises a thin flexible strip of steel, e.g. mild steel, having holes 10 with cutting edges formed by upset portions of the edges of the holes, theedges having cutting clearance angles relative to the surface of the strip and the strip being surface-hardened (e.g. by cyanide treatment and tempering or by diffusion hardening), so that both surfaces of the edges are hardened without unduly hardening the body of the element. The clearance may be provided by upsetting the sharpened edges themselves, as described in Specification 666,621, or by reversely bending the strip along the rows of sharpened edges and between the rows, as described in Specification 695,830; an element I having the latter type of clearance is shown in Fig. 4. The element 1 may be provided with a concave backing member 3 resting on the longitudinal edges of the element and secured to it by turning up and over the corners 6 of both the element and the backing member. One or more handles may be provided on the upper surface of the backing member. The strip may be flat or of curved cross-section.
Patent GB-1338789-A (GB)
Title: Process for producing rubbermodified plastics
IPC: C08F279/00
Filed: 1971-06-23
Abstract: 1338789 Graft polymerization process SUMITOMO CHEMICAL CO Ltd 23 June 1971 [24 June 1970] 29466/71 Heading C3G A rubber-modified polymer is produced by a process comprising (i) bulk polymerizing a solution of a synthetic rubber in a mixture of styrene and acrylonitrile by heating the solution in the absence of an initiator until from 3À5 to 15% by weight of the monomers has been polymerized, (ii) adding a chain transfer agent to the reaction mixture and continuing bulk polymerization until from 20 to 40% of the original monomers has been polymerized and (iii) suspension polymerizing the pre-polymer produced in the presence of lauroyl peroxide and a suspending agent. Additional monomers, e.g. (a) alpha-methylstyrene, (b) dimethylstyrene or (c) chlorostyrene may be included in the acrylonitrile-styrene solution. In the examples, an acrylonitrile/styrene solution, optionally containing said monomer (a) or (b), of polybutadiene is polymerized using t-dodecylmercaptan as chain transfer agent and an acrylonitrile/styrene solution containing styrene-butadiene rubber is polymerized using a t-dodecylmercaptan / t - hexadecylmercaptan / t - tetradecylmercaptan mixture. An additional amount of acrylonitrile is added in the suspension polymerization stage in Example 6.