baber/WOPTO huggingface dataset:
Patent GB-629640-A (GB)
Title: Improvements in or relating to apparatus for controlling electrical signals
IPC: H03K5/01
Filed: 1947-05-15
Abstract: 629,640. Pulse circuits. CINEMA-TELE. VISION, Ltd., and GRAHAM, G. E. G. May 15, 1947, No. 13107. [Class 40 (vi)] An amplifier whose output may be varied to be either in phase or in antiphase with the input comprises a valve in which the anode current/signal grid voltage characteristic is alternatively of positive or negative slope, according to the potential applied to a second control electrode of the valve, a fraction of this potential being applied also to the signal grid to prevent spurious changes of anode potential. In the embodiment of Fig. 2, a train of pulses is applied to the grid of a screen-grid valve over a blocking condenser 6 and an amplified train in which alternate pulses are reversed in sign is obtained from the anode circuit by switching the screen potential between values giving positive and negative slope. The screen potential is switched by means of a rectangular control wave applied over a blocking condenser 10, the mean potential being held at a suitable value by a series resistance 11 connected to the positive supply. The control wave is prevented from appearing in amplified form in the anode circuit by applying a fraction to the signal grid over resistance network 7, 8, 12. The valve characteristic is linearized by means of an unbyepassed cathode resistance 13, and valves in which the anode is specially treated to have high secondary emission may be used.
Patent GB-950546-A (GB)
Title: Improvements in remote control and/or access means
IPC: G01K1/14
Filed: 1962-04-05
Abstract: 950,546. Electric cables. TELEFLEX Inc. April 5, 1962 [April 5, 1961], No. 13128/62. Heading H1A. [Also in Division F2] A push-pull control cable 26, Fig. 1, adapted also to transmit a flow of fluid or electricity, is movable in a conduit 28 by means of a toothed gear 70, Fig. 3 (not shown), engaging the spaced coils of a helical wire 58, Fig. 4, wrapped around the cable, the cable itself comprising helically wound wires 56, 38, &c. defining a central passageway receiving a solid, tubular or stranded core 36, either the core or the helical wires comprising the means for transmitting a flow of fluid or electricity. As shown, the cable has a solid core 36 of steel or titanium forming a tension element, a close-coiled wire or wires 56 forming a compression element, four long-lay steel or titanium wires 38, 40, 46, 48 assisting the tension element, and two copper or aluminium electrical conductors 42, 44 insulated by ceramics, plastics or rubber and covered by fibreglass braid. In modifications (a) the compression element 56 is omitted; (b) the element 56 is omitted and the wires 36 to 48 are wrapped with threads of plastics, glass fibre or other material to minimize abrasion between wires; (c) the solid core 36 is replaced by a freely inserted core of stranded electrical leads and the helical conductors 42, 44 are replaced by helical tensile wires, the tension then being taken wholly by the helical wires 38-48; (d) embodiment (c) is modified for a cable acting only in compression by omitting the tension layer 38- 48 ; (e) the solid core 36 of Fig. 4 is replaced by a tube of rubber, plastics or metal for hydraulic or pneumatic flow or suction; (f) the embodiment (e) is modified by the insertion of an electrical conductor through the tube. It is also stated that the compression layer 56, in embodiment (c) and elsewhere, may be formed from insulated electrical conductors. In the application shown in Fig. 1 the cable 26 positions a device 24 for sensing temperature or other conditions in a furnace 22 and is engaged by the teeth of a gear 70, Fig. 3 (not shown), driven by a motor and reduction gear unit 72. The cable is coiled in a housing 60 and fed to the gear 70 through a swivelling guide tube 64.
Patent GB-377759-A (GB)
Title: Improvements in or relating to reflectors
IPC: F21S13/10
Filed: 1931-05-04
Abstract: 377,759. Reflectors. PRICE, C. T. and HODDER, H. J., Sandy Lane, Hampton Wick, Middlesex. May 4, 1931, Nos. 13150 and 19148. [Class 75 (ii).] A reflector for use in incandescent gas lamps &c. has the form of an inverted V, each limb 2, 3 of which comprises a central plane part 4 and side plane parts 5, 6 which extend upwardly from both inclined edges of the plane part and are inclined away from one another. The reflector is arranged below the source of illumination. As shown in Fig. 2, the inclined limbs 2, 3 are joined to a central part 1. The angle of between the parts 1 and 4 is 35-70‹, and the angle (not shown) between the parts 4 and 5 or 6 is 10-50‹. The reflector may be formed from a single sheet of thin rustless polished steel and is mounted, by means of a sleeve member 7 which is secured to it, on a rod or tube 9. Silvered glass mirrors, clipped on to a frame of the same form as before, may replace the polished steel reflector, as shown in Fig. 5. In this form the two limbs are formed separately and are adjustable in relation to one another about a vertical axis. Each limb has at its upper end an extension 12 formed with two arcuate slots 14, 15, and a cutaway portion 13 to pass over the supporting pipe. Set-screws or thumb-screws 16 passing through the slots screw into a bracket 17, which is split so as to be fitted around the supporting pipe. The form of Fig. 2 may similarly be made adjustable.
Patent GB-884311-A (GB)
Title: Plotting of graphs
Inventor: ELLSON PETER BRIAN
IPC: H03M1/00
Filed: 1959-04-17
Abstract: 884,311. Controlling cathode-ray tubes by records. NATIONAL RESEARCH DEVELOPMENT CORPORATION. July 18, 1960 [April 17, 1959], No. 13210/59. Class 40 (1). [Also in Group XL (c)] Graphs are plotted from digital data read from records by converting successive sets of data into pairs of analogue voltages for application to the deflection plates of a cathode-ray tube of the kind which maintains illuminated spots on the screen for a prolonged period. The record may be a punched or magnetic tape, a film or, as in the form described, punched cards. Data defining the X and Y co-ordinates of a single point is read off the card, each coordinate being represented by tens and units digits and the digit in each case is represented by a differentially timed pulse. The brushes (e.g. B3, Fig. 2) are connected via a plug-board to four selector switches rotating with the card feed which transform the timed pulses into markings on digit leads to pick up corresponding relays X5-X8. The contacts of these relays are connected to tappings on potentiometers PDU, PDT for the units and tens number of each co-ordinate. Voltages picked off are amplified by triodes 11, 12 acting in push-pull to apply the sum to the deflection plates P11, P12. At this time the beam is brightened by an " endof-card " pulse applied to the writing gun of the cathode-ray tube to make a dot on the screen. The next card produces another pair of voltages giving another dot and so on until all the cards have been read. The dots on the screen persist a time sufficient to allow all to be seen at once. If graduations on the X and Y axes are required, a preliminary set of cards is read. A calibrated frame could be provided in the same way. The image produced on the screen may be photographed.
Patent GB-540241-A (GB)
Title: An improved device for applying emollient and like substances to body tissues
IPC: A61F13/10
Filed: 1940-08-20
Abstract: 540,241. Applying medicaments. CHAMBERLAIN, J. Aug. 20,1940, No. 13231. [Class 81 (ii)] A device for applying emollient and like substances consists of an elastic finger sheath the closed end of which is formed into a receptacle or sac 8 for the reception of the substance which is expelled as required by the pressure of the finger on the sac. The opening of the sac may be closed by a removable plug 13 or by a detachable seal, spring- clip, ligament &c. The sheath may be formed to cover several fingers or the whole hand.
Patent GB-197947-A (GB)
Title: Improvements in stepped grates
IPC: F23H7/06
Filed: 1923-05-17
Abstract: 197,947. Martin, J. May 19, 1922, [Convention date]. Grates.-A step grate, which may be inclined downwardly or upwardly towards the rear or adjusted so that it lies horizontally, comprises fixed bars a, Fig. 1, and reciprocating bars b, c, which are moved in opposite directions by rods d, e and serve to agitate and feed the fuel along the grate. During the movement of the bars b, c, their outer ends coincide momentarily with the outer ends of the fixed bars and so form a series of alternating deep and shallow recesses. An adjustable step f is provided at the rear end of the grate. In the Figure, the bars are merely shown diagrammatically, but in practice they may be hollow and perforated on their top and front faces for the passage of air.
Patent GB-710762-A (GB)
Title: Device for reducing the balloon of thread in spinning frames and similar machines
IPC: D01H7/18
Filed: 1951-06-05
Abstract: 710,762. Anti-ballooning devices. FRENKEL, I. June 5, 1951 [June 8, 1950], No. 13246/51. Class 120(2) A device for reducing the balloon of thread in spinning &c. machines, of the type in which thread passes from a delivery device to a winding support mounted on a rotary spindle of the machine causing said thread to pass successively through a thread guide and a winding and twisting device, by way of an intermediate guiding device between the thread guide and the winding and twisting device, supported by and co-axial with the spindle, is characterized in that said intermediate device includes a balanced guide member adapted for rotary movement relative 'to the spindle and formed with a passage for leading the thread in close proximity to the axis of rotation and at least in part within a geometric cylinder of diameter corresponding to the exterior diameter of the spindle. The embodiment shown comprises a conventional spindle 1 having a sheath of wood 2 on which a tube 3 for winding thread 4 thereon is adapted to be placed. On the spindle 1 is shrunk a tip 5 and a cylindrical member 6 is fixed by threaded engagement on the tip 5. The member 6 acts as an outer race of a needle or roller bearing 7 carrying a pivot pin 8 rotation of which is made easier by the provision of a ball 9 at the bottom of the pivot pin 8 and in contact with another ball 10 seated in an axial cavity in member 6. The upper end of pivot-pin 8 is formed with a head portion 13 having a pair of diametrically opposite arcuate slots 14, 15 through which the thread 4 passes. Each slot is formed with a slit 16 for introducing the thread into the slots. In other embodiments, the member 6 is shrunk directly on to the end of spindle 1, the bearing 7 is dispensed with and the head is made separate from the pivot pin and is screwed on to it and locked thereon by a nut.
Patent GB-593260-A (GB)
Title: Improvements in and relating to the manufacture of tea
IPC: A23F3/06
Filed: 1945-05-28
Abstract: The picked leaf is frozen without being withered and the frozen leaf is then tumbled in air until it has thawed.  The tumbling may be done in a perforated drum slowly rotated on a horizontal axis. After removal from the drum the leaf is placed in a machine which removes the desired amount of juice.  Orthodox manufacture is now proceeded with and the removed juice may be sprayed on to the leaves after fermenting and before firing.  Specification 511,895 is referred to.
Patent GB-1164191-A (GB)
Title: Electrical Device
IPC: H05K1/03
Filed: 1967-03-22
Abstract: 1,164,191. Laminated electrical device. POLYMER CORP. 22 March, 1967 [23 March, 1966], No. 13354/67. Heading B5N. [Also in Division H1] An electrical device comprises a conductive layer of copper foil bonded to a layer of a polyphenylene oxide. In one method of making the device, which may be a circuit board or high frequency strip transmission line, granules of polyphenylene oxide are heated to 260 C. without pressure in a mould, pressed at 260 C., cooled while maintaining pressure and have the pressure relieved, to form a flat plate of dielectric material which is heat, chemical and oxidation resistant. Two sheets of copper foil which have been oxidized on one face are placed with their oxidized faces one against each face of the polyphenylene oxide plate, and are bonded thereto by heat and pressure, the pressure being maintained during cooling.
Patent GB-528970-A (GB)
Title: Improvements in and relating to the manufacture of electric cables
IPC: H01B7/28
Filed: 1939-05-04
Abstract: 528,970. Impregnating - compositions for electric insulation. WILLIAMS, E. G., SWALLOW, J. C., PERRIN, M. W., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. May 4, 1939, No. 13395. [Class 140] [Also in Groups XXXVI and IV] A cable suitable for voltages up to 1,000 volts comprises a central conducting core or cores surrounded by a layer of insulating material of thickness not exceeding 0.1 inches and consisting essentially of fibrous material impregnated with normally solid polythene. The polythene may have a molecular weight between 10,000 and 30,000 and may be made as described in Specification 471,590, [Group IV]. The fibrous material may be linen tape. Up to 50 per cent. paraffin wax may be added as a filler. Specification 505,762 is referred to. The Provisional Specification states also that other materials as set out in Specification 514,687, [Group IV], may be added as fillers.
Patent GB-1602404-A (GB)
Title: Electroplating of chromium
IPC: C25D17/10
Filed: 1978-04-06
Abstract: Process for depositing metals, employing an electrolytic bath which has an anolyte and a catholyte which are separated by a cation exchange membrane. The membrane consists of a perfluorinated film. The anolyte preferably contains a depolarising addition in order to reduce the electrode potential of the anode. The pH of the anolyte is set in such a way that a transfer of hydrogen through the membrane takes place which compensates for the generation of hydrogen on the cathode while the bath is used. The anode is arranged in the bath within a sheath which consists at least in part of a perfluorinated cation exchange membrane. The anolyte is likewise situated within the sheath.
Patent GB-180548-A (GB)
Title: Improvements in and relating to fastening stays for casement windows
IPC: E05C17/18
Filed: 1921-05-12
Abstract: 180,548. Birch, C. May 12, 1921. Hinges.-The staybar a has its end b twisted so as to engage between the curled ends k of a slotted intermediate connecting member c, to which it is hinged by a pin m, and the member c is pivotally mounted between a pair of lugs f secured to an attachment plate e. A projecting lug on the twisted end of the stay bar engages with the underside of the member c to hold the bar in the horizontal position.
Patent GB-762022-A (GB)
Title: Improvements in or relating to ventilator operating gears for use in longitudinally arranged houses such as glass houses and the like
Inventor: BOOTHROYD ALBERT VINCENT
IPC: E05F11/24
Filed: 1954-05-10
Abstract: 762.022. Fanlight &c. operating means. HALIFAX, R. C. May 6, 1955 [May 10, 1954], No. 13508/54. Addition to 602,529. Classes 20(3) and 137 Ventilator mechanism, for simultaneously operating a number of ventilators, or roof lights, of the type described in the parent Specification is characterized in that the cables 12; 13 are guided respectively over and under grooved pulleys 7, 8 mounted on a pulley plate 5 rigidly secured to the ventilator seating 4, the peripheries of the pulleys freely entering the side channels and engaging the central web of the H-section thrust member 6 thus serving to maintain the latter, throughout its movement, at right angle to the hing- ing axis of the ventilation frame. Lateral support for the horizontal component of the load on the thrust member 6 is provided by means of a small roller 11, Fig. 3, mounted on a pin 10 supported between lugs 24 on the underside of the pulley plate 5. The operating barrel 17, having one end of each cable 12 or 13 adjustably attached to it by a clip 16 or 15, is carried oil rollers 18 mounted in brackets 19 secured to the main rafters 2. To maintain the cables within the grooves of the pulleys 7, 8, the pulley plate 5 is provided with guards 20-23. In a modification, Fig. 4, the channels of a thrust member 7, of modified H-section, fit neatly, but freely, over the peripheries of grooved pulleys 8, 9, which are carried on pins 10 supported in a loop member 11. the latter having trunnions on its ends which engage holes in brackets 5, 6 secured to the ventilator seating 4.
Patent GB-1432958-A (GB)
IPC: D04B15/82
Filed: 1973-03-21
Abstract: 1432958 Knitting machines ELITEX-ZAVODY TEXTILNIHO STROJIRENSTVI GENERALNI REBDITELSTVI 21 March 1973 [23 March 1972] 13522/73 Heading D1C A knitting machine has programme drum 13 with pins 15 arranged in rows parallel to its axis driven by a first ratchet and pawl mechanism 3, 4, a control chain 34 driven by a second ratchet and pawl mechanism 39, 40, first and second lugs 33, 36 on the control chain respectively disengaging these mechanisms, the second operating through an electromagnet 28, the pins 15 controlling switches 16 to pass a signal indicating the required number of revolutions of the cylinder to be completed before the drum and chain move on to a control circuit which compares this with the actual number completed at any time and when these are the same energises the electromagnet. Cam 46 rotates in time with the needle cylinder and is engaged by a follower 45 on a lever with a finger 48 which actuates a switch to feed a pulse at every revolution. In the event of a fault, a switch 19 is operated manually to out out electromagnet 28 and cause drum 13 and chain 34 to be driven until the machine has reached its starting position. For Figure see next column
Patent GB-1020612-A (GB)
Title: Improvements in the production of organo-tin compounds
Inventor: OAKES VINCENT
IPC: C07F7/22
Filed: 1962-04-09
Abstract: Vinyl resins are stabilized by 0.1-5.0 phr. of organotin compounds (see Division C2) of formula <FORM:1020612/C3/1> and <FORM:1020612/C3/2> where R and R1 represent the same or different alkyl, aryl, aralkyl or alkaryl radicals, R11 and R111 represent the same or different alkyl, aryl, alkoyl or aroyl radicals or substituted derivatives, and RIV is a divalent alkylene radical.  In examples, the compounds in which R and R1 are butyl, and R11 and R111 are butyl, dodecyl, benzoyl or ethyl, or RIV is ethylene, were incorporated at 2 phr. into a composition containing 100 parts P.V.C. and 50 parts dioctylphthalate.ALSO:Organo tin compounds containing tin-sulphur linkages are prepared by reacting at least one alkyl, aryl, alkoyl or aroyl halide or dihalide, or alkyl ester of a halo-substituted carboxylic acid, with an organotin thio-sodium compound RR1Sn(SNa)2, where R and R1 represent the same o different alkyl, aryl, aralkyl or alkaryl radicals.  Compounds of formula <FORM:1020612/C2/1> may be formed, where R11 and R111 represent the same or different alkyl, aryl, alkoyl or aroyl radicals or substituted derivatives, and RIV is a divalent alkylene radical.  The thiosodium compound may be prepared by treating an organo tin oxide, e.g. dibutyl or dioctyl tin oxide, with sodium sulphide in water with a little alcohol and partially neutralizing with acid, e.g. acetic, giving a solution or slurry and <FORM:1020612/C2/2> which is stirred together with the halogen compounds at room temperature or slightly above; the product separating as an oil. Examples specify the reaction dibutyl tin thiosodium with butyl chloride, ethylene dibromide, dodecyl bromide, benzoyl chloride, benzyl chloride, ethyl bromoacetate, and a mixture of dodecyl bromide and benzoyl chloride. The products are used to stabilize vinyl resins.
Patent GB-310884-A (GB)
Title: A process for manufacturing substitutes for catgut
IPC: A61L17/08
Filed: 1929-05-01
Abstract: 310,884. Bost, P. May 2, 1928, [Convention date]. Yarns &c. - Unsterilized catgut strings for musical instruments, tennis rackets, &c. are made by spinning fibres obtained from the muscles &c. of animals. The fibres are spun after hardening into a comparitively fine thread which may be doubled and twisted until the required thickness is obtained. Specification 274,493 is referred to.
Patent GB-552849-A (GB)
Title: Improvements in or relating to wear resisting studs or the like
IPC: A43B13/24
Filed: 1941-10-23
Abstract: 552,849. Nails. BRITISH UNITED SHOE MACHINERY CO., Ltd., and HATFIELD, S. J. Oct. 23, 1941, No. 13611. [Class 17 (iii)] Headed nails used for securing or wear resisting purposes in boots &c. have the junction between the head and shank strengthened. The head has a cup or depression 5 on its underside and is roughened on the top. It is formed by upsetting from wire a part of which is swaged down to join the shank. In this operation the shank is generally made oval and a pin 15 is formed extending along the major diameter. Recesses are formed in the dies to produce ribs 17 on opposite sides of the minor diameter and the junction with the head is made conical at 13. Butts 9 are provided to resist withdrawal and the nail terminates in a four sided pyramidal point 11.
Patent GB-717754-A (GB)
Title: Improvements in or relating to di-quaternary ammonium salts
Inventor: LANE EDWARD SYDNEY
IPC: C07D213/20
Filed: 1951-06-11
Abstract: Bis-quaternary ammonium nitrates are prepared by treating di-nitric esters of aliphatic compounds containing two primary alcohol groups with tertiary amines.  Suitably, the reactants are heated together at a temperature of about 100 DEG  C. or above, optionally in the presence of an inert solvent, until the reaction mixture becomes water-soluble; conveniently the mixture is refluxed.  Suitable solvents include methanol, ethanol or other alcohols containing up to 4 carbon atoms or an excess of the tertiary amine above the 2 mols. stoichiometric proportion. Specified reactants are ethyl glycol, diethylene glycol, triethylene glycol, 1 : 4-butane diol, pentamethylene 1 : 5-glycol, hexamethylene 1 : 6-glycol and decamethylene 1 : 10-glycol dinitrates and the dinitrate of N : N1-bis (2-hydroxyethyl) sebacamide; trimethylamine, triethylamine, pyridine, dimethylamino-ethanol, benzyl dimethylamine, cetyl dimethylamine and dimethyl cyclohexylamine.  Examples describe the production of 1 : 10-di-(pyridinium) decamethylene nitrate, diethylene glycol di-pyridinium nitrate, 1 : 5-di(b -hydroxyethyl dimethyl ammonium) pentamethylene nitrate, 1 : 4-di (pyridinium) tetramethylene nitrate, 1 : 4-di (triethylamine) tetramethylene nitrate, 1 : 6-di (pyridinium) hexamethylene nitrate, 1 : 10-di (dimethyl-benzylammonium) decamethylene nitrate, 1 : 10-di (trimethyl ammonium) decamethylene nitrate and N : N1-bis (2-ethyl pyridinium nitrate) sebacamide.
Patent GB-1500171-A (GB)
Title: Folder for engineering drawings or the like
IPC: B42F7/06
Filed: 1975-04-04
Abstract: 1500171 Boxes K SUZUKI 4 April 1975 13844/75 Heading B8P [Also in Division B6] A container for engineering drawings (see also Division B6) comprises a pair of covers 12, 13 articulated to one another by a spine 14 and provided along each free edge with a flap 15, 16, 17; 15<SP>1</SP>, 16<SP>1</SP>, 17<SP>1</SP>, the flaps being folded over the covers 12, 13, which when in turn folded one over the other are secured releasably by releasable fastenings 25, 26, 28; 25<SP>1</SP>, 26<SP>1</SP>, 28<SP>1</SP>. The releasable fastenings may be of the hook and loop kind or press studs. The flaps 15, 15<SP>1</SP> may be provided with openings 27, 27<SP>1</SP> to provide handles. The flaps are not folded over the covers but are releasably attached by fasteners 28<SP>1</SP>, 28. A folder may include three covers (Fig. 7).