baber/WOPTO huggingface dataset:
Patent GB-639943-A (GB)
Title: Improved method of producing bio-synthetic antimicrobial substances
IPC: C07D211/88
Filed: 1947-07-30
Abstract: Cycloheximide, a neutral, ether-soluble, acidstable antibiotic, is adsorbed on activated carbon from a solution obtained by fermenting a culture medium of Streptomyces griseus and rendering the product acidic.  After filtration, the wet filter cake, which preferably contains also a diatomaceous earth filter aid (e.g. that sold under the Registered Trade Mark "Celite") may be eluted with a water-miscible alcohol or ketone (e.g. methanol, ethanol, propanol, isopropanol, butanol, acetone, methyl ethyl ketone or diethyl ketone), the volatile solvent then being removed in vacuo, the aqueous residue extracted with a chlorinated hydrocarbon solvent, preferably boiling below about 100 DEG  C. (e.g. a chlorinated ethylene or methane, especially chloroform), and the extract decolourized with a decolourizing carbon and evaporated to dryness. The residual cycloheximide, if necessary after further purification (e.g. by a counter-current distribution between benzene and water), may be crystallized from a solvent (e.g. amyl acetate, cyclohexene, petroleum ether, ethyl acetate or mixture of petroleum ether with diethyl ether or chloroform).  It yields a diacetate, dioxime and disemicarbazone. Examples illustrate various features of the invention.  The Specification as open to inspection under Sect. 91 (in which the antibiotic is designated "Actidione") comprises also an example in which the antibiotic is extracted from the acidic culture medium by means of chloroform, the extract is evaporated to dryness and the residue dissolved in benzene and lyophilized. This subject-matter does not appear in the Specification as accepted.
Patent GB-1074712-A (GB)
Title: Paper sacks
Inventor: HASELL FRANK WALSINGHAM
IPC: B65D30/20
Filed: 1965-05-17
Abstract: 1,074,712. Gusseted paper sacks. WILLIAM PALFREY Ltd. May 4, 1966 [May 17, 1965], No. 20819/65. Heading B8K. A paper sack, closed at one end by sewing (6), has a portion (la) of a side gusset (1) greater in width than an adjacent portion (1b) so that a trapezoidal cross-section is formed when the sack is opened. A folded strip (5) is placed over the one end of the sack, to which it is secured by transversely sewing at (6). The sack may be formed from a bag tube of one or more plies.
Patent GB-570355-A (GB)
Title: Improvements in and relating to magnetic devices for removing ferrous particles fromwater
IPC: B03C1/12
Filed: 1943-12-13
Abstract: 570,355. Magnetic separators. LUMSDEN MACHINE CO., Ltd., BLAKE, E. G., LUMSDEN, W., STAINER, J. H., and BLAKE, A. H. Dec. 13, 1943, No. 20829. [Class 72] A magnetic separator for removing ferrous particles from water comprises a mild steel plate a attached by spaced studs to the flanges b' of a circular plate b having a boss b<2> mounted on the end of a shaft c carried by a bearing d and revolved through gearing g<1>, g<2> by a motor h. Rings of permanent bar magnets e are secured to the plate b, the holes e' of the magnets being surrounded by brass rings f and the faces of the latter and the poles lying in the plane of the face of the disc a. The collector comprising the discs a, b dips into a narrow passage m<1> in the channel m in a box j through which the water flows and the ferrous particles adhering to the poles are removed by a stationary scraper n as the collector is rotated. The collector may be inclined to the vertical and the magnets may be U-shaped.
Patent GB-826204-A (GB)
Title: Improvements in or relating to centrifugal drying machines
Inventor: BURT JOHN BERNARD
IPC: D06F49/00
Filed: 1957-07-03
Abstract: 826,204. Spin driers. ACME WRINGERS Ltd. July 3, 1958 [July 3, 1957], No. 20974/57. Class 34(2) In a spin drier in which depression of a foot pedal 20 causes breaking of a motor control switch 22, application of a brake shoe 23 to the underside of a driving pulley 5 and the raising of a lid 2, the actuating mechanism comprises a toggle lever constituted by a pair of levers 10, 11, interconnected by a spring 13. The brake shoe and a switch operating arm 21 are carried by the lever 11.
Patent GB-332290-A (GB)
Title: Improvements in or relating to the treatment of textile filaments, yarns, threads, or the like
IPC: D06M11/38
Filed: 1929-01-11
Abstract: 332,290. British Celanese, Ltd., and Taylor, W. 1. Jan. 11, 1929. Divided on 332,263. Printing yarns, threads, and the like; resist printing. - Textile filaments, yarns, threads, ribbons, tapes, straws, &c. adapted for the production of intermittently coloured, multicoloured, or cross-dyed effects, are obtained by applying a mechanical reserve at intervals to the filaments &c. while they are travelling. The invention is applicable generally, e.g. to filaments &c. of cotton, silk, wool, viscose, cuprammonium and nitrocellulose artificial silks, cellulose acetate, and other organic derivatives of cellulose. The use as a reserve of a melted wax, e.g., a mixture of refined ground nut oil and hardened whale oil, is specified. The filaments &c. treated with the reserve, or fabrics or articles containing them, may be dyed directly to obtain the colour effects, or the filaments &c. so treated, or fabrics or articles containing them, may be further treated, prior to dyeing, with substances adapted to modify the affinity of the unreserved portions for dyestuffs, e.g., unreserved portions of filaments of organic esters of cellulose may be saponified with an aqueous, alcoholic, or other solution of caustic soda, caustic potash, sodium or potassium carbonate, sodium silicate, or trisodium phosphate, e.g. 2-10 per cent of caustic soda in a mixture of equal parts of methyl alcohol and water. The application of the reserve to artificial filaments is preferably effected continuously with their production. The reserve may be applied by the methods employed according to Specification 325,823, [Class 2 (ii), Cellulose &c.], for applying a solvent or softening agent, or by printing the filaments &c. by means of an embossed or indented roller to which the reserve is supplied in liquid or paste form, or the apparatus described in Specification 332,263 may be employed.
Patent GB-1167684-A (GB)
Title: Improvements in or relating to Apparatus for Feeding an Elongated Web of Flexible Material Lengthwise
IPC: B65H18/16
Filed: 1968-05-03
Abstract: 1,167,684. Recording-apparatus. HONEYWELL Inc. May 3, 1968 [May 4, 1967], No.21014/68. Heading G1J. Apparatus for feeding a web 112 between supply and take-up rolls 126, 110 comprises a motor 10 coupled through transmission mechanism to a roller 74 bearing on the roll 126 and to a roller 84 bearing on the roll 110 and means driven by the motor 10 for periodically relieving the pressure of the roller 74 against the supply roll 126. For re-rolling, the motor 10 drives the roller 74 in reverse direction and also drives means for periodically relieving the pressure of the roller 84 on the take-up roll 110. Applied to recording-apparatus, chart paper 112 passes over a record roller 94 between supply and take-up rolls 126, 110 where it is wrapped on cardboard sleeves on spindles which encorporate roller and spring clutches allowing free-wheeling in one direction whilst resisting rotation in the opposite direction. The speed of the motor 10 can be varied and is controlled to maintain a selected speed by a servo comparator comparing a reference voltage with that generated by a tachogenerator 24 driven by the motor 10. The transmission mechanism provides for the selection of one of three gear ratios by energizing the appropriate electrically operated clutch 34, 44 or 54. For forward feeding all three rollers 74, 84, 94 are driven from a driven shaft 64 in a system of meshing gear pulleys and belts, but for rerolling one-way clutches, built into pulleys 80, 90 allow the rollers 84, 94 to free-wheel. The diameters of the rollers 74, 84, 94 and the gear ratios in the drives thereto are chosen to ensure relative speeds that will produce tension in the chart during forward feeding. The spindle 72 of roller 74 is carried by arms 150, 152, tied by a bar 154 and pivoting on shaft 64, while the spindle 82 of roller 84 is carried by arms 142, 144, tied by a bar 146 and also pivoting on the shaft 64. An interacting spring (147) biases the rollers 74, 84 against the rolls 126, 110 respectively. Racks 168, 160 pivoted to arms 164, 156 rigid with the ties bars 154, 146, rest on bearings 170, 162 and mesh with gears 174, 172 carried by a shaft 176 to which one or the other can be coupled for one-way drive by energizing clutch 180 or 178. A spring 187 biases a roller 186 on an arm 182 fixed to the shaft 176 to contact a cam 188 on a shaft 138. During operation a clutch 190 is energized to couple the cam 188 to the shaft 138 causing the shaft 176 to oscillate and periodically move the rack 168 (or 160) when coupled to the shaft 176 by the clutch 180 (or 178) during forward feeding (or re-rolling) in a direction to pivot the roller 74 (or 84) away from the supply roll 126 (or take-up roll 110) to relieve the pressure thereon and prevent loose layers of chart on the roll as its diameter diminishes.
Patent GB-261485-A (GB)
Title: Improvements in and connected with gas burners for use with kitchen range boilers
IPC: F23D99/00
Filed: 1925-08-24
Abstract: 261,485. Storey, J. E., and Storey Foundry Co., Ltd. Aug. 24, 1925. Atmospheric gas burners; burners, attaching and mounting.-A burner for insertion in the boiler flue of a kitchen range when the coal fire is not in use comprises an horizontal chamber h and a mixing-tube j sloping rearwardly upwards from it, together with a stand o attached to the mixing-tube in adjustable horizontal relation to enable the height of the burner to be varied. In the construction shown, a rib or buttress m on the mixing-tube engages in a groove r on the stand, and the burner is secured by a screw n passing through a slot p in the stand and carrying a nut s. The burner body may be provided with feet u to enable it to be used in a low position by removing the stand.
Patent GB-718840-A (GB)
Title: Improvements relating to tool bars for tractors for coupling ganged implements thereto
IPC: A01D75/30
Filed: 1952-08-22
Abstract: 718,840. Gang mowers; weed breakers; rollers. HOLT; V. H. June 16, 1953 [Aug. 22, 1952, Jan. 20, 1953], Nos. 21133/52 and 1630/53. Classes 6 (1) and 6 (2) A tool bar for use on a tractor for the attachment of implements such as mowers, weed breakers and rollers comprises an arched front member 1 provided with hooks 9, 11 for the attachment of two implements, a rear member 1a provided with hooks for the attachment of a single implement and an arched connecting member 13. Pins 6 and brackets 7 are provided for attachment to the tractor hydraulically operated lifting links. As shown the member 13 is formed in two parts pivoted on a bolt 12, a yoke 21 being pivotally mounted and operated from the tractor to lock the rear portion 13a. The connecting member may be formed in one piece and the implements may be attached to the frame by means of pivoted links. Specification 698,908 is referred to.
Patent GB-683376-A (GB)
Title: Arrangement for measuring the power transmitted through an electromagnetic waveguide
Inventor: SETCHFIELD JOHN BERNARD
IPC: G01R21/00
Filed: 1951-09-07
Abstract: 683,376. High-frequency power measurement. STANDARD TELEPHONES & CABLES, Ltd. Sept. 7, 1951, No. 21166/51. Class 37. A device for measuring for indicating the power in a wave-guide comprises a circular hole in the wall of the guide across which a rectifier is diametrically connected between points on a line parallel to the lines of electric force in the guide, the unidirectional output of the rectifier being a measure of the power. A hole 4 is cut in one of the narrow walls of a rectangular wave-guide section 1 (Figs. 2, 3), having connection flanges 2, 3, and a metal box 6 with a cylindrical bore 7 coaxial-with the hole and closed with a metal plate 8 is screwed to the external surface of the wall. The bore diameter is such that it operates as a cylindrical wave-guide section whose cut-off frequency is above the range of frequencies transmitted along the main guide, and a crystal rectifier cartridge 5 is located transversely of the bore 7, its terminal cap 10 fitting in a thin insulating capacity bush 12 within a hole in the upper wall of the box, and its shank 11 fitting within a socket 13 screwed into the lower wall. A spring 16 screwed to an insulating block 18 on the side of the box contacts the rectifier terminal cap, and power is measured by a D.C. meter between the contact spring and the wave-guide wall. The closure plate 8 may be omitted.
Patent GB-1022942-A (GB)
Title: Automatic shut-off device for electro-pneumatic braking equipment
IPC: B60T15/56
Filed: 1964-05-22
Abstract: 1,022,942. Electro-pneumatic brake systems. COMPAGNIE DES FREINS ET SIGNAUX WESTINGHOUSE. May 22, 1964 [May 30, 1963], No. 21211/64. Heading F2F. An arrangement whereby an electro pneumatic valve EVS and a shut-off device D1 co-operate to return to pneumatic control in the event of a failure of the electric supply, comprises a brake pipe CG, a main pipe, a triple valve or distributer, an electromagnetically operated brake release valve, a control reservoir, an auxiliary reservoir, an electropneumatic brake application valve and a shut-off device. Normally the pressure from the brake-pipe CG is operative in the chamber 14 to hold the piston 10 against the spring 8 whereby the valve 7 is kept open and the pressure distributed in the chambers 5, 6 and 12 as well as in chamber 14, the valve 2 being held open and the valve 1 held closed by a solenoid acting on the rod 3. In the event of an electric failure or if power is otherwise cut off, the valve 1 opens and the valve 2 closes. The brake pipe CG and chamber 14 are vented through a choke A1 in chamber 4 so that, below a predetermined pressure the spring 8 overcomes the piston 10 to cut off the brake and main pipes from the outlet at A. The brake pipe pressure can then be built-up by operation of the driver's control valve in known manner, and pneumatic braking resorted to. Reapplication of electric power will re-open valve 2 and close valve 1 so that the system returns to its normal condition as described above. Alternatively to a single choke at A, chokes B and C may be situated in pipes 17 and 18 as shown. The choke C is smaller than the choke B, thereby producing a time lag before the piston 10 moves.
Patent GB-459901-A (GB)
Title: Improvements in bradawls and like hand tools for making holes
IPC: B27G15/00
Filed: 1935-07-26
Abstract: 459,901. Awls. ENGLISH ELECTRIC CO., Ltd., 28, Kingsway, London, and TILSTONE, G., Siemens Works, Stafford. July 26, 1935, No. 21276. [Class 112] [See also Groups XXII and XXIII] A hand tool for forming a pilot hole for a screw which passes through a fixing hole in an article, such as an electric switch, ceiling rose, &c., comprises a shank 1 which fits the fixing hole to form a guide for the bradawl point 3, and a handle 2. The tool may have a gimlet point 5, Fig. 3, instead of the bradawl 3, and the point 5a, Fig. 4, may have a shank entering a slot in the shank 1 and be secured by a screwed sleeve 6 with an interned flange, the sleeve 6 forming part of the guide. Alternatively, the shank of the point may be secured in a bore in the shank 1 by a grub-screw. The guiding portion of the tool may be a detachable sleeve so that the tool may be fitted with sleeves and points of different size and the sleeve may be stepped and reversible to suit two different sized screws. The guide ensures the pilot hole being formed concentric with the fixing hole in the article.
Patent GB-1504073-A (GB)
Title: Annular single piston brake arrangement
IPC: F16D65/78
Filed: 1976-05-24
Abstract: 1504073 Full-face disc brakes CATERPILLAR TRACTOR CO 24 May 1976 [27 Aug 1975] 21333/76 Heading F2E A full-face multi-plate disc brake in a road vehicle hub has a single annular piston 122 associated with springs 128, 130 for applying the brake, a chamber 134 which is pressurized to release the brake (i.e. when the vehicle is not parked) and a chamber 140 which is pressurized to apply the brake during service braking. Coolant is circulated via passages 52, 54 to the brake discs, and coolant pressure is also applied to the spring chamber 144, the net effect of coolant pressure being to tend to apply the brake.
Patent GB-732136-A (GB)
Title: Improvements in or relating to the separation of nitroform from nitric acid by distillation
IPC: C07C201/16
Filed: 1952-08-26
Abstract: Nitroform is separated from reaction mixtures containing concentrated nitric acid by adding to the mixture an amount of water sufficient to reduce and subsequently maintain the content of nitric acid present therein below 68 per cent, and then submitting the diluted mixture to distillation whereby nitroform, together with water, is obtained as distillate.  In a preferred embodiment, some of the nitric acid is distilled off from the initial mixture before water is added.  If the distillation is carried out under partial vacuum, the concentration of NHO3 must be maintained below about 66.5 per cent.  In an example, a reaction mixture, obtained by nitration of acetylene, contained nitroform (10.5 per cent), nitric acid (75 per cent) and water (12.5 per cent).  About half of the nitric acid was distilled off through a column under a pressure of 200 mm., giving a residue containing 18 per cent nitroform, 56 per cent nitric acid and 23 per cent water. The contents of the still were diluted with water to make the composition 14.5 per cent nitroform, 46.5 per cent nitric acid and 39 per cent water, and the diluted mixture was distilled using the column at a pressure of 150 mm. to give an aqueous distillate, containing 47 per nitroform, which separated in two phases.  The lower layer was 90 per cent nitroform.
Patent GB-222288-A (GB)
Title: Improvements in pump-barrels for tyre-inflators, syringes and like implements
IPC: F04B33/00
Filed: 1923-08-23
Abstract: 222,288. Dover, H. W. Aug. 23, 1923. Vitreous pipes.-The barrel of a tyre inflator. syringe, &c. is formed of celluloid or like material strengthened by longitudinal metal wires, or linen or other threads, embeded in the celluloid &c. The Figure shows an air pump barrel formed with strengthening wires e equally spaced apart, and set midway in the thickness of the barrel.
Patent GB-207843-A (GB)
Title: Improvements in automatic or remote controlled rotary converter substations
IPC: H02P11/00
Filed: 1922-08-05
Abstract: 207,843. English Electric Co., Ltd., and Schroeder, G. Aug. 5, 1922. Synchronizing dynamo-electric machines.- In an automatic or remote-controlled substation, a rotary converter adapted to be started up at reduced voltage from the alternating-current side has its field winding excited from a separate low-voltage source so as to avoid the necessity of splitting the field winding at starting; the number of turns of the field winding is substantially smaller than would be required for the selfexcitation of the converter. In the example shown, the exciter 6 is mounted on the shaft of the converter 1. The secondary windings 8, 9. 10 of a three-phase transformer are, each connected at one end to a slip-ring 4, and at the other end to a switch contact 11; an intermediate point in each secondary is connected to a contact 18. At starting, the arms 12 contact with the points 18, and the machine accelerates to near the synchronous speed with a reduced voltage applied to the slip-rings. The switches 21, 20 are automatically closed in succession so that the voltage of the exciter armature is impressed or the converter field winding 5 through the resistance 19. The bar 20 is then moved until the switch arm 13 connects with contact 17 and short-circuits the resistance 19, and a moment later, the arms 12 connect with contacts 16 so that the full voltage is applied to the 'iprings through the small resistances 15; further movement of the switch cuts out the resistances.
Patent GB-1192962-A (GB)
Title: Method of Producing Electrically Isolated Semiconductor Devices on Common Crystalline Substrate
Inventor: FA CHARLES HSIEN
IPC: H01L21/00
Filed: 1967-05-09
Abstract: 1,192,962. Integrated circuits. NORTH AMERICAN ROCKWELL CORP. 9 May, 1967 [12 May, 1966], No. 21561/67. Heading H1K. Isolated semi-conductor segments are each surrounded by an insulating layer which separates them from a common crystalline substrate. To produce this arrangement a semiconductor wafer is reduced to a desired thickness and provided on one side with an epitaxial layer of semi-conductor material of lower resistivity. The free face of the original wafer is now provided with an insulating layer on which is deposited an auxiliary substrate. The composite semi-conductor is now etched to produce the individual segments separated by grooves and an insulating layer is then deposited on the segments and walls of the grooves. The material of the common crystalline substrate is then deposited after which the auxiliary substrate is etched away leaving the supported segments covered by the first-formed insulating layer. Further processing may use standard integrated circuit technique. Semi-conductors suggested are silicon, germanium, gallium arsenide, gallium phosphide, indium antimonide, and cadium sulphide. The insulating layers, which may be formed by deposition or growth, may be of silicon oxide, silicon nitride, alumina or beryllia. The material of the crystalline substrate may be silicon, silicon nitride, alumina, or beryllia. Reference has been directed by the Comptroller to Specifications 1,043,569, 1,051,507 and 1,061,060.
Patent GB-1041104-A (GB)
Title: Decade counters
Inventor: HUNT ROBERT WILLIAM
IPC: H03K23/54
Filed: 1964-05-25
Abstract: 1,041,104. Electronic counters. STANDARD TELEPHONES & CABLES Ltd. May 21, 1965 [May 25, 1964], No. 21563/64. Heading G4A. A decimal counter comprises one binary stage (I) followed by a three-stage Johnson counter modified to give division by five. Considering the Johnson counter as comprising a ring of six elements 2A, 3A, 4A, 2B, 3B, 4B then three adjacent elements are conducting at any time, so producing a cycle of six. By connecting 2A and 3A by a diode D1 the condition 3B, 4B, 2A is omitted to give a cycle of five.
Patent GB-441774-A (GB)
Title: Improvements in and relating to driving mechanisms
IPC: H01H3/44
Filed: 1934-07-24
Abstract: 441,774. Actuation of switches. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and SARGEANT, C. J., Mark Ash, Dunsmore Avenue, Hillmorton Paddox, Rugby. July 24, 1934, No. 21642. [Class 38 (v)] In a driving mechanism, which may be used for operating transformer tap-changing switches, a motor drives through lost-motion an intermediate shaft fitted with a spring which is moved over a dead-centre position beyond which the stored-energy is released to rotate the shaft, a second intermediate-shaft being driven by the first-mentioned shaft through a lostmotion drive, the second shaft driving the mechanism-operating shaft only during a portion of its rotation, thereby moving the operating mechanism itself from one step position to the next. As shown in the Figure the motor 1 rotates a driving cam 3 which engages with lost motion a pin 8 on an intermediate shaft 4. This pin after being moved through a semicircle brings a spring 10 across a dead-centre position so that the spring may moke the shaft freely through the subsequent semicircle. During this rotation of the member 4 and slightly before the dead-centre position is reached a pin 9 engages a further cam 5 attached to the driving disc 6 of a Genevastop mechanism the driven disc 7 of which rotates the operated device e.g. a tap-changing switch 2 through one step. If the spring 10 breaks, the motor, after taking up lost motion completes this action by positive drives. The stepping operation may be completed by the spring independently of the motor after the dead-centre position has been passed in the case of failure of motor supply.