baber/WOPTO huggingface dataset:
Patent GB-746244-A (GB)
Title: Method of drying or similarly treating web-like material
IPC: F26B13/00
Filed: 1954-06-29
Abstract: 746,244. Drying weblike material. AKTIEBOLAGET SVENSKA FLAKTFABRIKEN. June 29, 1954 [June 30, 1953], No. 19029/54. Class 34(1). In a method of drying web-like material 1 which is carried on one or more heated cylinders 3 and at the same time exposed to a gaseous medium the drying is divided into at least one step before the fibre saturation stage C and one step after, the treating medium being recirculated and some being discharged to the open air during the first step while a corresponding quantity from the steps after the fibre saturation stage is used to replace that discharged in the first step and the medium used in the later steps is made up by a quantity supplied from outside, the fibre saturation stage being the point at which there ceases to be free water in the material and evaporation thence takes place with decreasing intensity. The cylinder 3 is partly surrounded by boxes 6 supplying the medium through slots 4, the used medium being exhausted through the space 5 between the boxes, collected in the space 8 between the boxes 6 and outer casing 9a and discharged through duct 34, some being discharged to atmosphere by fan 10 and some being recirculated via fan 12 the amount being controlled by damper 11. Medium from the second step exhausted via duct 35 mixes with the recirculated medium and the mixture is returned to the first step via heat exchanger 18, damper 19 and duct 20. In the second step medium is supplied via boxes 29 having openings 30 used medium being exhausted to duct 35 via spaces 31 and 28. Some medium is recirculated via damper 21 duct 23 and fan 24 for repeated use, fresh medium being supplied via damper 22 either as unconditioned medium or as medium heated by heat exchangers 13, 14 through which the medium exhausted by fan 10 passes and the mixture in duct 23 being heated by heat exchanger 25 and returned to boxes 29.
Patent GB-1467843-A (GB)
Title: Chrominance signal correction
IPC: H04N9/85
Filed: 1974-05-01
Abstract: 1467843 Colour television RCA CORPORATION 1 May 1974 [7 May 1973] 19035/74 Heading H4F A composite colour television signal including a chrominance component having a subcarrier frequency fs<SP>1</SP> is derived from a video disc 14, Fig. 1, and fed to a balanced modulator 71 which also receives a reference signal from circuit 80 at a nominal frequency fs+fs<SP>1</SP> where fs is a desired (e.g. NTSC) subcarrier frequency, but whose frequency varies in response to frequency variations in the played back signals, a chrominance signal having a fixed subearrier frequency fs being derived from a comb filter 74, 75 receiving the output of band-pass filter 73; the circuit 80 includes a fixed frequency oscillator 100, Fig. 2, operating at a frequency fs and a voltage controlled oscillator 360 operating at a frequency of fs/2-fs<SP>1</SP>, the output of oscillator 360 being fed to a modulator 130 together with a signal at frequency derived, via frequency halver 110 and frequency tripler 120, from oscillator 100, the modulator output being passed via band-pass amplifier 140 to provide the signal at the nominal frequency fs+fs<SP>1</SP> for application to the balanced modulator 71, Fig. 1. The voltage controlled oscillator 360 is controlled by the output of a phase detector 220 receiving the colour synchronizing bursts separated from the output of band-pass filter 73, Fig. 1, and the output of oscillator 100, fed via a sample and hold circuit 300 and circuits 310-350. The pick-up circuits 20, Fig. 1, may respond to capacitance variations between the stylus 16 and the conductive surface of video disc 14. The rotation speed of turntable 10 carrying video disc 14 is maintained substantially constant by operating drive motor 12 at a free-running speed which is approximately 1% higher than the desired operating speed and slowing the turntable by means of an eddy current brake 55 controlled by a speed error detector 51 receiving separated line synchronizing pulses. Cyclical variations in the velocity of the groove in video disc 14 relative to stylus 16, e.g. due to the central hole of the disc being off-centre, are corrected by moving the stylus by a transducer 65 in response to a discriminator 61 receiving line synchronizing pulses. The range of frequency variation of voltage controlled oscillator 360, Fig. 2, is limited by voltage limiter 350 to ensure that the pulse detector 220 does not lock the circuit to one of the subearrier sidebands during start-up when eddy current brake 55, Fig. 1, is not fully effective. To ensure correct phase-lock a sweep circuit 270, Fig. 2, is included; when a phase detector 240 and out-of-lock detector 250 detect that the circuit is not phase-locked, circuit 270 is activated to provide to adder 330 a triangular waveform symmetrical about earth potential, phase-lock acquisition deactivating circuit 270 and causing the sweep voltage to sweep back to earth potential with the same slope as when circuit 270 is activated.
Patent GB-1183875-A (GB)
Title: Process for improving the Strength Retention and Absorption Rate of Polyglycolic Acid Sutures
Inventor: CHIRGWIN LESTER DANIEL
IPC: D01F6/62
Filed: 1967-04-25
Abstract: 1,183,875. Sutures. AMERICAN CYANAMID CO. 25 April, 1967 [23 May, 1966], No. 19097/67. Heading A5R. [Also in Division B5] Sutures having an improved strength retention and absorption rate are made from polyglycolic acid filaments which are subjected to a temperature of from 50-90‹C at a relative humidity not greater than 20% for from five hours to five minutes, and are thereafter braided to form sutures. Preferably, the filaments are subjected to a temperature of from 100 to 160‹C for from 2 hours to 30 mins., and especially to a temperature of from 130‹C to 140‹C for from 70 mins .to 50 mins.; the preferred relative humidity is not greater than 10%. The filaments after being melt spun and drawn up to 5 times their length, may be wound on spools, each spool then being subjected to the heat treatment, or the process may be made continuous by passing the drawn filament through a heated chamber maintained at the desired humidity and temperature. In the example, braided sutures from such filaments are tested, both before and after ethylene oxide sterilisation, in respect of tensile strength, elongation at break, knot strength and elongation, and strength retention following implantation; the results are tabulated and compared with data for catgut sutures.
Patent GB-223658-A (GB)
Title: Improvements in or relating to microphones
IPC: H04R21/02
Filed: 1923-07-25
Abstract: 223,658. Graham, E. A. July 25, 1923. Microphones and variable resistance transmitters; diaphragms.-In a microphone, a rigid diaphragm is held between rings of non-sonorous substance, which damp the vibrations set up in the rigid diaphragm and also in the secondary diaphragm or diaphragms of the granule capsule. The granules are disposed between electrodes, one of which is attached to the main diaphragm and the other is furnished with a stem for adjustment purposes. As shown in Fig. 1, a rigid diaphragm e is held between two rings f, f<1> of felt and carries one of the electrodes of a granule capsule i. The other electrode of the capsule is furnished with a stem p, which is adjustable in the casing wall a and is clamped in the adjusted position by a screw r. Both electrodes may be mounted on secondary diaphragms carried by the capsule. Alternatively, the electrode g<1>, Fig. 4, supported by the diaphragm e, is carried by a secondary diaphragm h<1>, and the electrode g is mounted in a box u which is adjustable by the stem p. In the modification shown in Fig. 6, three capsules are associated with the diaphragm e. The front electrodes of the capsules are connected to the diaphragm by a three-armed spider w. In a further modification employing several capsules, each front electrode is connected directly to the diaphragm e.
Patent GB-630392-A (GB)
Title: Reversible mining machine chain lug
IPC: E21C35/193
Filed: 1947-07-17
Abstract: 630,392. Mining-machines. BOWDIL CO. July 17, 1947, No. 19129. Convention date, Nov. 4, 1940. [Class 68 (i)] In order that a pick-carrying chain may run in reverse, each double - ended rhomboidal bit 13, having concave side faces, projects from a pick holder 12 in which it is loosely held between abutting surfaces 25, 28 and complementary shallow sides. The holder fits in an ovalshaped hole in a cutter box 10 and is firmly wedged in position by one or more set-screws 14, 15 engaging at right-angles, the diverging base portion 32, 33 of the holder so that, as the holder is drawn downwards into the recess, the bit is wedged between the holder and an inclined slot 21, 22. Dirt falls through a passage 29 in the holder to escape through holes 30 formed in the box whilst projections are provided to prevent the holder falling into the box when the set-screw is removed.
Patent GB-759969-A (GB)
Title: Improvements in or relating to the production of organic halogen compounds
Inventor: WYNNE WILLIAM ALLENBY
IPC: C07C17/10
Filed: 1954-06-30
Abstract: The invention comprises a process for the continuous manufacture of bromochloromethanes by passing bromine and methyl chloride with, if desired, some of the products of reaction, over a finely-divided contact agent maintained in turbulent condition, at a temperature between 250 DEG  C. and the decomposition temperature of the products for 1-66 secs. reaction time, recovering the desired products and recycling the residue.  The proportions of reactants are in the ratio of from 1:0.5 to 1:5 of organics to bromine, and the contact material may be sand of particle size 50-150 mesh B.S.S.  In examples the method is used to give a product containing a high proportion of monobromomonochloromethane, and some dibromomonochloromethane, sand being used as contact agent, and unreacted reagents being removed from exit gases for re-cycling.  To get a high proportion of dibromochloromethane all or any of the reaction products may be recycled.
Patent GB-388285-A (GB)
Title: Improvements in and relating to electric circuit-breakers in which the arc is extinguished by a blast of fluid under pressure
IPC: H01H33/32
Filed: 1932-07-06
Abstract: 388,285. High-tension switches. AKT.- GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. July 6, 1932, No. 19147. Convention date, July 6, 1931. [Class 38 (v).] In circuit-breakers in which the arc is extinguished by a blast of fluid under pressure multiple movable hollow contact members are used so as to obtain two breaks in series, and in the closed position the contacts are bridged by a fixed self-adjusting intermediate contact. The movable contact members a, b may be arranged side by side but in the arrangement they are in line within the pressure chamber o and are connected with differential pistons f, g working in the ends of the chamber and within enlarged extensions h, i thereof. The intermediate contact c may consist of two conical plungers mounted in a housing d extending across the chamber and formed with pressureequalizing holes. The contact c, however, may be a single contact mounted on a flexible housing such as d.. When pressure is supplied to the chamber the pistons are moved apart and the hollow contact-members separated from the fixed contacts so that a blast of fluid may pass across the arc and out through the nozzle orifices. The switch is closed by applying fluid pressure through the pipes n.
Patent GB-516484-A (GB)
Title: Improvements in and relating to the manufacture of plaster board
IPC: B28B19/00
Filed: 1938-06-28
Abstract: 516,484. Plaster board. LEFEBURE, V., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. June 28. 1938, No. 19155. [Class 87 (i)] For improved sound resistance a plaster board composed of plaster or cement lined on both sides with fibrous sheet material such as paper, pulpboard or cardboard has an adherent outer layer of felt or felted paper, which may be applied to the plaster core or may be bonded to a standard plaster board liner or a thinner paper liner contacting. with the plaster core. Hessian or thin wire netting may also be used as a backing material or may be interposed between the felt or felted paper and the paper or pulpboard contacting with the plaster core. A further improvement is obtained by using a cellular plaster core such as may be obtained by adding foam to the plaster mix from which the core is made and the felt or felted paper layer may contain asbestos fibres to make it fireproof. One example comprises a core of plaster of Paris containing 10 per cent. sawdust and a composite layer of paper, this contacting the plaster, hessian and coarse felt 0:18 inch thick, the hessian and felt layers applied by means of a cold water calcium caseinate glue. Another example comprises a core made of stucco, sawdust and water, one ordinary baseboard liner and the other liner consisting of compacted felt on a hessian backing stuck to the baseboard liner. Specification 6217/99, [Class 87], is referred to.
Patent GB-568969-A (GB)
Title: Dual purpose table article and set of articles associated therewith
IPC: A47G23/06
Filed: 1943-11-17
Abstract: 568,969. Table articles. DEAKINS (SILVERSMITHS), Ltd., and WHITAKER, W. H. Nov. 17, 1943, No. 19171. [Class 128] A cake or like dish provided with a flat bottom and a shallow base rim 7 serves, when inverted, as a stand for supporting a teapot 1, cream jug 2, and sugar basin 3, all appropriately shaped to fit the space within the rim 7. Feet 9, serving as handles for the device when serving as a stand, may be provided.
Patent GB-443995-A (GB)
Title: Improvements in and relating to wood preservatives
IPC: B27K3/32
Filed: 1935-07-05
Abstract: 443,995. Preserving wood. GRUBENHOLZIMPRAGNIERUNG GES., 31, Viktoriastrasse, Berlin. July 5, 1935, No. 19291. Convention date, Aug. 3, 1934. [Class 140] A wood preservative comprises a mixture of potassium or ammonium bifluoride, potassium or ammonium chromate or dichromate and potassium carbonate. Arsenic acid, arsenious acid or their acid potassium or ammonium salts or phenolic compounds such as dinitrophenol may be added. The amount of potassium carbonate or bicarbonate is such that the pH value of the mixture in water is at least 7. The composition is used preferably in a 10-14 per cent solution for impregnating wood, wherein the chromate is reduced to chromic ions which form insoluble double salts with the fluoride.
Patent GB-844519-A (GB)
Title: Improvements in or relating to aircraft
IPC: B64C29/00
Filed: 1958-06-17
Abstract: 844,519. Annular wing aircraft. ZBOROWSKI, H. P. G. A. R. VON June 17,1958 [June 18, 1957], No. 19328/68. Class 4. In an aircraft having an annular wing 1, nacelle 3 and propulsion unit 2, the upper and lower wing chords L 1 , L 2  are cambered in the same direction in planes of symmetry parallel to a vertical plane passing through the axis XY, preferably from a maximum camber in the vertical plane through XY to a minimum or zero camber in the horizontal XY plane. By this arrangement the axis of the wing may be maintained at zero incidence to the line of flight. As in Fig. 16, the wing and central nacelle, which may house aircrew as well as a propulsion unit, are connected by faired struts 14 extended at 12 outside the wing to support nacelles 11 which provide passenger accommodation and house elements of the undercarriage to be extended when the aircraft is in a vertical take-off attitude.
Patent GB-433572-A (GB)
Title: Improvements in or relating to coin mechanisms for gas meters
IPC: G07F15/02
Filed: 1934-06-30
Abstract: 433,572. Prepayment mechanism for gas meters. NAAMLOOZE VENNOOTSCHAP MACHINERIEEN-EN APPARATEN FABRIEKEN MEAF, 30, Croeselaan, Utrecht, Holland. June 30, 1934, No. 19400. Convention date, March 28. [Class 27] In prepayment mechanism for gas meters the quantity mechanism of which may be set forward by either of two coins of different value proportionately to the value of the coin used, a back rotation stop device is provided between the coin mechanism and the quantity mechanism. One sun-wheel of the quantity mechanism has attached to it a wheel M, Figs. 1 and 4, driven through a wheel 41 from a wheel 12 actuated by the coin mechanism. The wheel 41 is rigid with a ratchet wheel 44, and the spindle 42 of the unit 41, 44 is rotatable in slots 45. During prepayment the wheels 12, M rotate in the direction of the arrows, Fig. 4. If a reactive rotation of the wheel M occurs such as would drive the wheel 12 in the opposite direction, the unit 41, 44 is moved down in the slots 45 and the wheel 44 engages a fixed tooth 43 which locks it and prevents the back rotation. The wheel 12 is loose on a shaft 8 and carries a planet wheel unit 13, 14, the wheel 13 meshing with a sun-wheel 17 fixed to the shaft 8 and the wheel 14 meshing with a wheel 15 carried by an arm secured to the wheel 12 and meshing with a sun-wheel 16 loose on the shaft 8. When a penny is inserted, the wheel 16 is locked and the wheel 17 is rotated, the wheel 17 being locked and the wheel 16 rotated when a shilling is used. The wheel 12 is thus rotated proportionately to the value of the coin used. Coin action, mechanical - connection and multiple-coin.-The coins are inserted into slots 50, 51, Fig. 1, in a shaft 1 which is rotated through 180 degrees and returned by a spring. A spring controlled pivoted clamp coacts with a disc 2 on the shaft to ensure a full stroke in each direction, the position of the clamp being reversed at the end of each movement by abutments 4, 5 on the disc 2. The shaft 1 is geared through wheels 6, 6<1>, 7, 7<1> to a wheel 9 loose on the shaft 8 but secured to a double-armed lever 32, the arms of which are located one on each side of the wheel 9. The arms have pivoted to them, levers 34, 35 for engagement respectively by a shilling and a penny. When either of the levers 34, 35 is actuated, a catch 36 thereon engages either a pin 29 or a pin 31 on levers 22, 23 loose on the shaft and carrying ratchets 27, 28 respectively to engage discs 19, 21 secured respectively to the wheel 16 and the shaft 8. In this way, the levers 22, 23 are carried along with the double-armed lever 32 and set forward the quantity-mechanism. A bar 25 adjustable by a pointer 26 forms a stop for releasing the ratchets 27, 28 from the discs 19, 21.
Patent GB-751062-A (GB)
Title: Differential bucket type liquefied gas pump
IPC: F04B15/08
Filed: 1954-07-02
Abstract: 751,062. Crossheads; cylinders; stuffing- boxes. UNION CARBIDE & CARBON CORPORATION. July 2, 1954 [July 15, 1953], No. 19406/54. Classes 122(1) and 122(5) [Also in Group XXVIII] In a pump for liquified gases (see Group XXVIII) the cylinder 10 is lined with elements 17 and elements 18, with a smaller internal diameter, of inert, self lubricating material. e.g. bonded graphite, which are clamped by a metal disc 20 screwed into the end of the cylinder. Above the disc are a series of packing rings 21 of graphite-impregnated woven asbestos with loose graphite inserted between the rings. Above the rings 21 is a metal sleeve 22 having a guide sleeve 23 of material similar to the elements 17, 18; the assembly is clamped by a nut 24. Lantern rings 55, 57 are provided to drain away leakage. The pump is actuated by a crosshead 103 guided on rods 104 through anti-friction bushes including a bearing cage 105 having several ball races each consisting of adjacent pairs of longitudinal grooves joined at each end, one groove having balls 106 in contact with the rod 104 and the other being deeper to allow movement of the balls without contact with the rod 104.
Patent GB-1150439-A (GB)
Title: Improved Method and Machine for Interconnecting Two Webs of Paper
Inventor: WELIN-BERGER GUY JOHN OLOF
IPC: B31F5/04
Filed: 1966-05-03
Abstract: 1,150,439. Paper bags. G. J. O. WELINBERGER. 3 May, 1966 [4 May, 1965], No. 19415/66. Heading B8K. [Also in Division B5] Trapezoidal filter bags are made by adhering two paper webs along stripes 2, 5, 6 and cutting the webs along the stripes.
Patent GB-691786-A (GB)
Title: Recovery of streptomycin from solutions thereof
Filed: 1949-07-23
Abstract: In the process of the parent Specification, the carboxylic type ion-exchange resin employed for adsorption of streptomycin is one formed by the copolymerization of a divinyl compound (e.g. divinyl benzene) and a polymerizable acid (e.g. acrylic or methacrylic acid). Advantageously a column of resin in the form of a salt (e.g. its sodium salt) is used, e.g. in a three-step cycle consisting of passing a clarified streptomycin-containing broth through the column, eluting the adsorbed streptomycin with a solution of acid, and regenerating the resin by passing a solution of a base (e.g. sodium hydroxide) through the column, followed by washing with water.  It is also possible to use the resin otherwise than in a column, to use it in its hydrogen form, and to use calcium chloride solution as eluting material.  The resin should preferably contain only 2.5-5.0 per cent of the divinylbenzene component in order that it may have a high porosity.  The broth treated should desirably have a pH above 4.5 (preferably about neutral point) and be freed from calcium and other ions liable to interfere with the process.  The streptomycin may be recovered from the eluate (which also contains metal salts) by evaporating (preferably under reduced pressure) to small volume or to dryness, taking up the residue in methanol or other solvent for streptomycin in which the salts are insoluble, filtering, precipitating streptomycin from the filtrate (e.g. with acetone), filtering and drying, and, if desired, converting the product to its crystalline calcium chloride complex salt by dissolving it in methanol and adding calcium chloride.  In examples, a copolymer of 95 per cent of methacrylic acid and 5 per cent of divinylbenzene is used in the form of (1) its ammonium salt, and (2) its sodium salt, elution being effected with dilute hydrochloric acid. Example (3) gives comparative results with this resin, one containing 10 per cent of divinyl benzene and a carboxylic resin believed to be of the phenolformaldehyde type (all eluted with hydrochloric acid), a sulphonated phenol-formaldehyde resin and a sulphonated coal resin (both eluted with sodium chloride solution or aqueous sulphuric acid), a silicate exchange resin (eluted with sodium chloride solution), carbon (eluted with acidified aqueous methanol) and fuller's earth (eluted with an aqueous solution of pyridine hydrochloride).  Specification 638,664 also is referred to.
Patent GB-958499-A (GB)
Title: Chemical brightening and electrolytic polishing of aluminium
Inventor: CYBRIWSKY ALEXANDER
IPC: C25F3/20
Filed: 1960-06-01
Abstract: A bath for electrolytic polishing or chemical brightening the surface of an aluminium or aluminium alloy article consists of sulphuric acid, phosphoric acid and/or an acid salt thereof and water, corresponding to a mixture of H2SO4 of s.g. 1.84 and H3PO4 of s.g. 1.72 in volume ratios at 72  DEG F. ranging from 70% H2SO4 over 30% H3PO4 to 85% H2SO4 over 15% H3PO4, the total water-free acid content of the bath being 88.4-90.5% by volume. The bath may additionally contain 0.001-0.01% by weight of a silver salt such as the nitrate or cyanide, and the H2SO4 may be partly replaced by an alkali metal salt thereof such as the sulphate or bisulphate.  The article is dipped into the bath heated to 200-300  DEG F., e.g. for chemical brightening at least 230  DEG F. and for electrolytic polishing at most 250  DEG F.  A combination process may be effected in the one bath heated to 230-250  DEG F. by first immersing the article without the passage of an electric current, then turning on the current, e.g. using 8-15 volts with 40-150 A.S.F. for polishing. After treatment, a protective film may be applied by anodizing before drying or lacquering after drying.