baber/WOPTO huggingface dataset:
Patent GB-640367-A (GB)
Title: Improvements relating to diaphragms for loudspeakers
Inventor: HASSAN THOMAS FREDERICK
IPC: H04R7/12
Filed: 1947-05-28
Abstract: 640,367. Diaphragms. ACOUSTIC PRODUCTS, Ltd. May 28, 1947, No. 14239. [Class 40 (iv)] [Also in Group V] An integrally formed loudspeaker diaphragm comprises a cone 5 and a central cylindrical portion which consists of at least two cylindrical sections 9, 10 of successively smaller diameter in the direction of a terminal section 11 which carries a speech coil, the junctions between the adjoining sections and with the cone forming compliances which permit effective highfrequency response of the speech coil. The diaphragm is formed from a felted fibrous blank having a peripheral suspension ring of fabric (Fig. 1, not shown) and is finally shaped by pressing (see Group V), the central cylindrical portion and the adjacent cone surface being impregnated with a thermo-setting plastic material and hardened by heat treatment. The pressing operation reduces the thicknesses of the impregnated parts, suitable dimensions being given. The speech coil leads are threaded through holes 15, 16 to avoid the central suspension member when fitted. Specifications 548,756 and 613,287 are referred to.
Patent GB-1090215-A (GB)
Title: Improvements in and relating to field time-bases of television apparatus
IPC: H03K4/43
Filed: 1966-03-31
Abstract: 1,090,215. Valve and transistor sawtooth generating circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. March 31, 1966 [April 3, 1965], No. 14258/66. Headings H3P and H3T. In a field deflection circuit, for a television receiver, of the type in which a linearizing feedback is fed from output to input of the output stage 1 via a transformer winding 7, further linearizing and 8-correction circuits are provided. As described, capacitor 8 is charged via resistor 6 and winding 7 and repetitively discharged by valve 23 under control of regenerative feedback from winding 24. Alternatively, the discharge valve 23 may be connected as a blocking oscillator. A network 15, 16, 17 eliminates the flyback peak from the waveform induced in winding 7; a further network 19, 20, 22 connected to a tapping in the cathode resistor 10 provides parabolic and 8-correction components required for linear deflection on a wideangle cathode-ray tube. A detailed mathematical treatment is provided, showing that the time constants of components 19,-20 and 19, 22 are so great that the fourth and higher-degree terms are negligible in relation to the lower order terms. In Fig. 4 (not shown) the lower end of variable resistor 22 is connected to earth. In Fig. 5 (not shown) the lower end of resistor 22 is connected to a tapping on a further potentiometer connected across capacitor 8. The valves may be replaced by transistors.
Patent GB-743352-A (GB)
Title: Improvements in or relating to semi-conducting devices
IPC: H01L21/00
Filed: 1953-05-21
Abstract: A rectifier, transistor or other semiconductor device comprises semiconducting AlSb having less than 1 per cent volume of free Al. The material may be prepared by (i) melting Al and Sb together in a crucible at a temperature above 1100 DEG C. and transferring the melt from a crucible into a chillmould, (ii) melting Al and Sb together at 1080 DEG C.\sB50 DEG  and withdrawing polycrystalline or monocrystalline rods from the melt at a speed less than the linear crystallisation speed, (iii) melting Al and Sb together at 1080 DEG \sB50 DEG C. and quickly removing formed AlSb from the melt or (iv) heating solid AlSb to a temperature of between 650 DEG  and 1100 DEG C. AlSb specimens usually contain considerable inclusions of aluminium in the grain boundaries, and if this stray material is removed according to the invention, the AlSb has improved semiconductor properties and is less liable to corrosion.
Patent GB-143618-A (GB)
Abstract: 143,618. Wittnebert, D. Feb. 24, 1919. Adding and subtracting apparatus; transfer mechanism; detent mechanism. - Manually set and operated machines with differential setting comprises a casing 24 in which are secured two shafts 1, 2, on the second of which is fixed a series of indicating-drums 4 - - 8 bearing numerals 0 - - 9. Adjacent to these are carried differentially movable setting-disks 9 - - 12 pierced with holes 13 for the insertion of a pencil &c., and provided with gear teeth 15 adapted to engage similar teeth on registering wheels 17 - - 21 carried on the shaft 1. Transfer is effected by single-tooth radial members 14 carried by the setting- disks, which engage lateral teeth 23 on the registering-wheels, inadvertent movement of these being prevented by pinions 16 carried by the indicating-drums and adapted to engage the teeth 22. A socket 30 is provided to fit over the end of a pencil &c. In operation, the end of a pencil &c. is inserted at the required hole 13 and the wheel revolved until the pencil strikes the edge of the apertured casing 24.
Patent GB-685597-A (GB)
Title: Improvements in or relating to metal cans sealed in an airtight manner
IPC: B23K1/002
Filed: 1951-06-18
Abstract: 685,597. Making hollow-ware. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. June 18, 1951 [June 21, 1950], No. 14374/51. Classes 83 (ii) and 83 (iv). [Also in Group XVII] Soldering and brazing; seamed joints.-In making an airtight metal can, the body and at least one end wall are flanged so that a soldered joint spaced from the can proper can be made between the flanges and soldering is effected by high-frequency induction heating. In an embodiment, Fig. 2b, seamed flanges are formed on the lid 12 and body 10 of a can and solder 13 is melted to seal the joint. The solder may be in the form of tin foil provided between the parts 10, 12 before forming the seam. The joint may be bent as in Fig. 2c after soldering. Heating is effected by a coil 17, Fig. 4, while rollers 18, 19 engage the body 10 and lid 12 during soldering. The rollers may be water-cooled and cooling of the joint may be during or after soldering. Non-seamed flanged joints are described.
Patent GB-1030163-A (GB)
Title: Improvements in and relating to fastening devices
Inventor: NEWLAN RONALD FRANK
IPC: F16B21/02
Filed: 1962-04-13
Abstract: 1,030,163. Tumbutton fastenings. MOULDED FASTENERS Ltd. April 18, 1963 [April 13, 1962], No. 14375/62. Heading E2A. A catch device for securing a panel-like member to a second member comprises a first part 1 having a shank 3 adapted to be rotatably mounted in an aperture formed in one of the members and having an enlarged head 7 and a second part 2 adapted to clip laterally on to said shank so as to be secured against rotation relative thereto and to retain the first part in said aperture said second part having an integral projection 12 which upon rotation of the assembled parts overlaps a portion of the other of said members thereby retaining said portion between the projection and said one member. In the construction shown both parts are moulded in a thermoplastic material such as nylon and the part 1 has a reduced portion 5 in the shank of generally rectangular cross-section. The part 2 has an open ended slot 10 in a portion 8 which clips on to the reduced portion 5 of the part 1 and the entrance to the slot has projections 11 which retain the portion 8 in position on the shank 3. When the part 2 is clipped to the part 1 the lower end of the shank is received in a depression 9 in the part 2. The part 1 has a screwdriver slot in its head by which it can be turned and the projection 12 has a stiffening rib 13.
Patent GB-691833-A (GB)
Title: Preparation of translucent sheeting
IPC: C08J7/02
Filed: 1951-06-18
Abstract: <PICT:0691833/IV (a)/1> A sheet having a ground glass appearance translucent surface is prepared by coating one or both sides of the sheet with a liquid composition comprising a solvent capable of softening or partially dissolving the surface of the sheet and also a particulate substance which is capable of decomposing or subliming to a gaseous product, subjecting the coated sheet to an elevated temperature for a sufficient period to cause decomposition or sublimation of a substantial proportion of the substance, whereby gas holes are formed in the surface and immediately adjacent sub-layers of the sheet to produce a regular roughness on the surface giving translucency, and then subjecting the translucent surface to partial clearing by applying a solvent for the sheet so that some of the gas holes are collapsed.  The sheet may be films or foils of cellulose acetate, propionate, butyrate, or acetate butyrate, cellulose ether, or copolymer of vinyl chloride and vinyl acetate ("Vinylite" Registered Trade Mark), and may be pigmented, e.g. with titanium dioxide.  The substance may be substantially solvent insoluble ammonium carbonate, bicarbonate, carbamate, benzoate, salicylate, or hydrosulphide decomposing or subliming between 140 DEG  and 250 DEG F. and 50 per cent should have a particle size not greater than 0.003 inch.  Sheet of film is drawn from roll 2 over idler rolls to coating mechanism 8 for application of the substance dispersed in a liquid containing a small amount of the base film material, which liquid by softening the surface of the sheet causes penetration of the substance below the surface.  A suitable liquid is methanol, glycol monomethyl ether and ethylene dichloride mixture, and an alternative mixture contains ground glass, acetic acid, water and acetone in addition. The coated sheet is partly dried and passes to heating chamber 12 at above 150 DEG  F.  The coated sheet then passes round idler rolls to coating device 31 where methanol, acetone, hydrocarbon, or ethyl acetate or mixtures thereof clearing solvent, which may be diluted with water, is applied; the mixture or dilution of the solvent is selected depending on the amount of clearing required.
Patent GB-144366-A (GB)
Abstract: 144,366. Haddan, A. J. H., (National Cash Register Co.). March 6, 1919. Tickets, issuing and cutting- off.-Relates to strip feeding and positioning mechanism for the printing or perforating attachments of ticket vending machines, and consists in the provision of mechanism to feed the strip slightly past the printing position, and of a positioning device which moves slightly forward and downward to engage the strip, and then slightly backward taking the strip with it to the correct position for printing and severing. The invention is described in connexion with a cash register. Shafts 15, 52, 49, 46, Figs 3 and 4, are driven through gear wheels from the main operating handle 10 of the machine. The detail and receipt strips 30, 32, pass under the type wheels 29, the receipt strip passing through a guide 55. The receipt strip is notched at 77 (Fig. 5). Projecting into the guide 55 at its lower end are two spring fingers 71 carried by an arm 68 and lever 69, connected by a cross-piece 70 and pivotally carried at 64 by a yoked frame 66 pivoted to a frame rod 65. The frame 66 is in one with a link 80, on the end of which is a roller engaging a cam groove in a disk 83, fast on the shaft 52, while the lever 69 is connected through the medium of an eccentric pin 86 to a forked link 84, embracing the shaft 52 and carrying a roller 87 engaging a cam groove in the disk 89. The strip 32 is normally fed past the printing position by rollers 56, 57, and the cam is so shaped that the arm 68 lever 69 and cross-bar 70 are swung forwardly to move the fingers 79 past and over the notches 77. Just before the printing impression is made, the camgroove 82 rocks the frame 66 counterclockwise to lower the fingers to engage the surface of the strip 32, the cam 88 again comes into play, swing- ing the frame 69, 68, 70 counterclockwise, the fingers springing into the notches 77 and taking the strip slightly backwards. The strip is then printed and is severed at 91 by the knives 92, 59 and the pitman 84 is moved back to normal. Specifications 9400/97, [Class 106, Registering &c.], and 10785/14 and 16242/14, [both in Class 106 (i), Calculating &c.], are referred to.
Patent GB-1496717-A (GB)
Title: Fibre-reactive dyestuffs their manufacture and use
IPC: C09B62/04
Filed: 1975-04-08
Abstract: 1496717 A substituted anilino-triazine CIBAGEIGY AG 8 April 1975 [18 April 1974] 14452/75 Heading C2C [Also in Division C4] 2 - p - Sulpho - m - aminoanilino) - 4 - chloro- 6 - (cyclohex - 1<SP>1</SP> - en - 1<SP>1</SP> - ol - 2<SP>1</SP> - yl) - s - triazine is prepared from m-phenylenediaminesulphonic acid and 2,4-dichloro-6-(cyclohexanon-2<SP>1</SP>-yl)-striazine (Example 4).
Patent GB-954385-A (GB)
Title: Improvements in or relating to the production of phosphate coatings on metals
Inventor: MAJOR RONALD CHARLES
IPC: C23C22/03
Filed: 1961-04-21
Abstract: A non-aqueous phosphating solution comprises a halogenated hydrocarbon such as trichlorethylene or perchlorethylene, 1-20% by weight of a lower aliphatic alcohol containing 3-8 carbon atoms per molecule, e.g. butyl alcohol, and an acid phosphate such as mono-methyl orthophosphate.  Mild steel plates are immersed in the solution at 80-100 DEG C. for a period of 1-10 minutes. The Provisional Specification discloses a solution containing by weight 100 parts trichlorethylene, 2-5 parts acid mono-methyl orthophosphate and 10 parts butyl alcohol.
Patent GB-880272-A (GB)
Title: Improvements in or relating to bactericidal and fungicidal compositions containing xylene derivatives
IPC: A01N29/04
Filed: 1959-04-28
Abstract: A bactericidal and fungicidal composition comprises a liquid carrier with a surface active or wetting agent or a solid carrier with or without a surface active or wetting agent and one or more of alpha, alpha1-diiodo-p-xylene; alpha, alpha1 - dithiocyano - p - xylene; alpha, alpha1 - dibromo - p - xylene; alpha,alpha1-dibromo - m - xylene; alpha,alpha1 - m-xylene; alpha,alpha1 - dithiocyano - m - xylene; alpha,alpha1 - dibromo - o - xylene; alpha,alpha1 - diiodo - o - xylene; alpha, alpha1 - dithiocyano - o - xylene; alpha,alpha1-dichloro - m - xylene; alpha,alpha,alpha1 - trichloro - p - xylene; 2 - bromo - p - xylene; and 2,4-dichloro-m-xylene. Specified carriers are clays, diatomaceous earth, talc, spent catalyst, alumina silica materials, water and organic liquids, such as kerosene, benzene, toluene, xylene, cyclohexanone and other petroleum distillate fractions or mixtures thereof.
Patent GB-361296-A (GB)
IPC: A01G1/06
Filed: 1930-05-12
Abstract: 361,296. Treatment of growing plants. DALCHOW, F., 11, Waldemarstrasse, Nauen, and HOBBING, R., 3, Hohenzollernkorse, both in Neutempelhof, Berlin, both in Germany. May 12, 1930, No. 14543. Convention date, May 14, 1929. Void [Published under Sect. 91 of the Acts]. [Class 6 (ii).] For training main shoots of young trees, the trunk 1 is cut off directly above the shoot or eye destined for extension and the direction of the shoot is influenced by a guide splint on the trunk. The band or splint 6 is made of soft metal or flexible non-elastic material and has two lateral extensions 7, 8. It may be reinforced by a rib 9. As shown in Fig. 3d, the extension 8 is wrapped round the trunk and the part 7 is wrapped round the eye or bud which develops into a shoot 2a.
Patent GB-294461-A (GB)
Title: Improvements in rotary liquid distributors
IPC: C02F3/04
Filed: 1928-05-17
Abstract: 294,461. Argent, J. T., and Adams- Hydraulics, Ltd. May 17, 1928. Rotary apparatus.-The radial arms 13 of a rotary sewage or distributor project from a rotatable receiver 12 supported or suspended from a pipe, bridge, or bar 4 extending above the filter bed, the receiver being supplied with liquid from a feed tank 3 which is intermittently discharged by syphonic action. A feed pipe 4, having its inlet near the bottom of the tank 3 mounted on a wall enclosing the filter bed. and supported at its outward end by a pillar 8, serves also as a bridge to support a downwardly extending branch 5, and is closed at 6 by a plate, its extension 7 serving solely as a bridge to support the apparatus. The branch 5 is provided with a collar 9 supporting a race 10 for ball or roller bearings on which a rotary plate 11 rests. The plate 11 supports a receiver 12 carrying radial tubular arms 13 from which liquid escapes through nozzles 14 the reaction of which rotates the receiver about the branch 5. In the lower part of the receiver a wall 15 forms a chamber 16 in which liquid can collect. Liquid accumulates in the tank 3 until its level is higher than the pipe 4 when it syphons over into the receiver 12, syphonic action being assisted by a constriction 17. To assist in breaking the syphonic action when the level of the liquid falls, an air tube 18 is arranged within the branch 5. In a modification the branch 5 extends into the chamber 16 and a bent tube is connected to the branch 5 to assist in breaking syphonic action.
Patent GB-260649-A (GB)
Title: Improvements in apparatus for interrupting electrical circuits
IPC: H01H9/40
Filed: 1925-06-04
Abstract: 260,649. Dubilier Condenser Co., Ltd., (Dubilier, W.). June 4, 1925. Arc-rupturing devices.-In circuit interrupters having coacting contact members for interrupting the circuits one or more of the contact members is resiliently mounted so that when the circuit is broken a vibrating action of such contact or contacts takes place and a spark gap or gaps are introduced to suppress or quench the arcing. The automatic circuit-breaker shown in Fig. 1 has auxiliary contacts 17, 18 for interrupting the circuit after the main contacts 2, 3 have separated and a second gap 16 in series with the gap between the contacts 17, 18, Fig. 3, this gap being arranged to function as a quenched arc gap. The gap 16 is produced between a fixed contact 7 and a contact 12 mounted with the contact 17 on a spring 14 attached to a block 11, the free end of which is adjustable between springs 27<1> on a screw 15 so that a vibrating action of the contact 12 may occur. The contacts 7, 12 are of copper and are provided with heat-radiating, fins 8, 13, contacts 17, 18 being made of carbon. In the modification shown in Fig. 2, two quenched arc gaps 26, 27 are arranged to be in series with the gap between contacts 17, 18. The main contacts may be omitted.
Patent GB-776766-A (GB)
Title: Improvements in or relating to spring tine rakes
Inventor: HARGREAVES DEREK BURTT
IPC: A01D80/00
Filed: 1954-05-19
Abstract: 776,766. Spring tine rakes. HARGREAVES & CO., Ltd., W. Jan. 11, 1955 [May 19, 1954], No. 14644/54. Class 6(1). A spring tine rake comprises a plurality of spring tines mounted on a frame, each tine having a downwardly bent working end, a coil intermediate of its length and a forwardly extending tail, the coils having their axes normal to the length of the tines and being mounted on a transverse rod of the frame, abutment means being provided on the frame for locating the tails of the tines against movement in a plane normal to the axes of their coils. The intermediate coils 21 of the tines are mounted on a transverse rod 16, the tails being bent to form loops 22 which are mounted on a second transverse rod 15, Vertical pairs of lugs 13 are welded to the member 10 of the rake and carry bobbin-like collars 14 and cross pins 14a between their upper ends, these forming mounting means whereby the rake is mounted on the turf-working implement described in the Specification 776,765.
Patent GB-423410-A (GB)
Title: Improvements in pistons
IPC: F02F3/12
Filed: 1934-05-16
Abstract: 423,410. Pistons. PORTAIL, (nÚe FENEYROL), G. J., 9, Avenue de Turri, Route de la Valette, Toulon, Var, France. May 16, 1934, No. 14835. Convention date, Oct. 11, 1933. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 17, 1934.] [Class 122 (i)] In pistons of the kind in which the head 1 is protected by a layer 2 of insulating material held to the head by an initial shell 6, the securing rivets 7 are thermally insulated by material 9 to minimize transfer of heat from the combustion chamber to the cylinder body.
Patent GB-110208-A (GB)
Title: Improvements in the Method of Producing Strainer and Sifter Frames and Attaching Wire Gauze, Wire Cloth, or the like, thereto, and Tools for use therein.
Inventor: ASTBURY SAMUEL ENOCH
IPC: B21D53/00
Filed: 1916-10-19
Abstract: 110,208. Astbury, S. E., and Jarvie, J. R. Oct. 19, 1916. Sieves and screens.-Strainer or sifter frames are made and attached to the wiregauze &c. forming the strainer &c. by slanting back one edge of an annular &c. sheetmetal blank A, slanting the edge of the sheet F of wire-gauze &c., engaging the slanted flanges of the frame and gauze, pressing them down against the bottom of the frame, and, finally, if desired, slanting the outer wall of the frame in the apparatus shown in Fig. 10 and pressing it down, as shown in Fig. 8. In one way of performing the invention, the frame blank A is pressed to a channel section in the apparatus shown in Fig. 2, the inner wall is slanted in the apparatus shown in Fig. 3, the edge of the gauze &c. is flanged in the apparatus shown in Fig. 4, the flange of the gauze is slanted in the apparatus shown in Figs. 5 or 9, the slanted flanges of the frame and gauze are engaged, as shown in Fig. 6, and are pressed down against the bottom of the frame. In a modification, the frame is made L.shaped, and the vertical side is slanted and engaged with the gauze as described above. The outer edge may afterwards be flanged in the apparatus shown in Fig. 4, slanted, and pressed down.
Patent GB-264068-A (GB)
Title: Improvements in article feeding mechanism for wrapping machines
IPC: B65B35/20
Filed: 1925-07-07
Abstract: 264,068. Marks, E. C. R., (Automat Molding & Folding Co.). July 7, 1925. Packeting by wrapping-up. -Relates to an article feeding mechanism for forwarding bars of butter, oleomargarine, and the like to wrapping-machines, such, for instance, as are described in Specifications 256,383, 264,385, and 264,728. The bars are placed on a horizontal table 1 having a longitudinal opening in which a feed bar 3 is simultaneously moved vertically and horizontally, an adjustable guide 4 ensuring alignment. A rocking arm 7 engages in a guide 6 on the underside of the bar 3 to impart horizontal movement, and rocking arms 12 act on blocks 10 to raise the bar at the appropriate times. The article is moved progressively along the table until it engages a stop 5, and rests on a receiver 14, vertically movable into the raised position shown in Fig. 2. The receiver is lowered into alignment with a guideway 13 forming part of the wrapping mechanism, and the article is moved to the left by a plunger 16a having a head 16b of maple or the like. A stop 15 on the receiver 14 arrests the movement of articles on the table 1 when the receiver is in the lower position.
Patent GB-1280573-A (GB)
Title: Process for preparing oxymethylene polymers
Inventor: ITO AKIHIKO
IPC: C08G2/00
Filed: 1970-03-31
Abstract: 1280573 Tetraoxan polymerization MITSUBISHI PETROCHEMICAL CO Ltd UBE INDUSTRIES Ltd and DAICEL Ltd 31 March 1970 [31 March 1969 22 Dec 1969] 15094/70 Heading C3P Tetraoxan is polymerized in the solid state in the presence of a cyclic acetal and optionally an acyclic acetal, using Broensted acid, ionizing radiation, Lewis acid or organic coordination complex thereof or hydrocarbyl halide initiator. In examples the acetals are dioxan-1,3, dioxolan- 1,3, trioxocan-1,3,6 and methylal, while the initiators are HCl, SnCl 4 . BF 3 .Et 2 O, EtI, MeI, CH 2 Cl 2 , γ-radiation and MeI or EtI/γ-radiation. Radiation may be effected by prior treatment of the monomer and then raising the temperature or in a single stage at a higher temperature.