baber/WOPTO huggingface dataset:
Patent GB-539825-A (GB)
Title: Improvements in yeast propagation
IPC: C12N1/18
Filed: 1940-03-26
Abstract: 539,825. Yeast; vitamins. STANDARD BRANDS Inc. March 26, 1940, No. 5440. Convention date, March 28, 1939. [Class 14 (ii)] In propagating saccharomyces cerevisiae, vitamin B6 is added to the wort. The wort contains dextrose, one or more of the following nutrient salts:-potassium chloride or dihydrogen phosphate, calcium chloride, ammonium sulphate, magnesium sulphate, potassium citrate, citric acid and ferric chloride, together with growth-promoting factors designated I (inositol), IIA (p-alanine ; which may be partially replaced by I-leucine or iso-leucine), and IIB of unknown composition. Utilizing Fleischman 189 yeast, increase in the crop is obtained when vitamin B6 is added and a further increase if vitamin B1 is also added. With Gebruder Mayer yeast, vitamin B6 prevents the inhibitory effect of vitamin B1 upon the crop. The effect upon the first mentioned yeast may be used as a means for measuring the vitamin B6 contents of materials. In place of vitamin Bl, a pyrimidine such as 2-methyl-5 ethoxy-6-aminopyrimidine and a thiazole such as 4-methyl-5 #-hydroxy-ethyl-thiazole may be added.
Patent GB-873497-A (GB)
Title: Improvements in or relating to electrical rectifying equipment
Inventor: PEASE WILLIAM EDWARD
IPC: G05F1/33
Filed: 1958-02-20
Abstract: 873,497. Automatic control systems for rectifying apparatus. STANDARD TELEPHONES & CABLES Ltd. Feb. 20, 1958, No. 5508/58. Class 38 (4). A saturable reactor delivering the input to a rectifier is controlled by a further saturable reactor having a control winding, shunted by a Zener diode, included in a circuit connected across the output terminals of the rectifier. The output voltage of a rectifier RU1 supplied through a transformer T1 from an A.C. source is automatically maintained constant by applying the output voltage to control a saturable reactor TDR2 which, in turn, controls a further saturable reactor TDR1 in series with the input to the rectifier. Saturable reactor TDR2 is in series with the supply from a tapping on transformer T1 to a rectifier RU2 which energizes a control winding E of saturable reactor TDR1. The output voltage of rectifier RU1 is applied to a series connection of windings B and C of saturable reactor TDR2 and winding D of saturable reactor TDR1. Winding B which is shunted by a Zener diode Z to maintain constant current in it, serves as a reference winding, winding C serves as a control winding, and winding D serves as a bias winding. Stability of the system is improved by interconnection of windings AH on the two saturable reactors which are self-excited through rectifiers RU5, RU6. When the current supplied to rectifier RU1 reaches a predetermined value the output voltage of a rectifier RU3 supplied through a transformer T2 overrides the control of the saturable reactors by the output voltage so that further increase of current is prevented. By operating switch SW1 this current limiting may be arranged to occur at a lower level for constant current battery charging.
Patent GB-1498528-A (GB)
Title: Methods and apparatus for encasing straight-bead-welded steel tubes
IPC: B29C63/14
Filed: 1975-02-10
Abstract: 1498528 Thermoplastic coating of steel tubes MANNESMANN AG 10 Feb 1975 [12 Feb 1974] 5529/75 Heading F2P A method for encasing a straight-bead-welded steel tube 4 with a synthetic resin material comprises extruding the material in the form of a foil strip 1, providing an adhesive thereon, rotating the tube 4 and translating it in a longitudinal direction thereof feeding the strip 1 via a guide roller 2 and a pressure roller 3 to the tube 4, helically winding the strip 1 around the tube 4 whose peripheral speed relative to the speed of extrusion of the strip 1 is such as to stretch the strip 1 and temporarily reducing the amount of stretch of the strip 1 adjacent the weld bead 5 thereby relatively increasing the thickness of the strip. In the particular embodiment described the adhesive is in the form of an extruded strip 1a applied to the strip 1 at the guide roller 2. Variation of the speed ratio between the guide and pressure rollers is achieved through electromagnetic clutches 8, 9 engaging either of two pairs of sprockets 6, 6a and 7, 7a respectively of different transmission ratios. Temporary speed variation to reduce the amount of stretch is achieved through contacts actuated by the weld bead 5. The degree of stretch may alternatively be varied by periodically changing the distance between the guide and pressure rollers 2, 3 by movement of a control disc caused by passing of the weld bead 5 when the tube is 4 rotating.
Patent GB-412893-A (GB)
Title: Improvements relating to the coiling or piling of slivers
IPC: B65H54/84
Filed: 1934-02-21
Abstract: 412,893. Packing or condensing coils of sliver. SCHNEIDER, H., 66, Zeltweg, Zurich, Switzerland. Feb. 21, 1934, Nos. 5774 and 5775. Convention dates, July 7, 1933 and Sept. 25, 1933. [Class 120 (iii).] Coils or piles of sliver are packed or condensed in rotary cans or on rotary discs by the pressure of a rolling means which rises with the growing pile and rolls the surface smooth as it is formed. The sliver B, Fig. 1, is coiled on a rotating disc D and is pressed thereon by a rotary cone K supported on an inclined shaft A carried by a rod R slidable vertically in guides F<1>, F<2> and counterweighted at G. If desired a cylindrical guide sleeve H, Fig. 3, may be provided to encircle the upper layers. A roller composed of a series of separately rotatable discs may be substituted for the cone K, while hydraulic or electromagnetic supporting and guiding means could be employed.
Patent GB-141330-A (GB)
Title: Improvements in automatically operating mechanical handling apparatus
IPC: B66D3/18
Filed: 1920-02-26
Abstract: 141,330. Clapier, A. G. April 8, 1919, [Convention date]. Fluid-pressure-actuated apparatus.-The hoisting chain c of a skip b is connected to the piston-rod t of a cylinder d which is secured to the piston-rod T of a cylinder D. Pressure fluid is supplied to the cylinder d by a pipe G, and when the piston valve p is in the position shown passes to the cylinder D through the flexible pipe F. A spring r tends to move the valve to a position in which the supply of pressure fluid is cut off and the pipe F communicates with the atmosphere through the apertures m. When a load is to be hoisted, a pull is first given to the chain c which is insufficient to compress the spring but sufficient to move the piston P to the end of its stroke to the right. If a further pull is now given to the chain c, the piston valve p will be moved to the right against the spring until the shoulder t' on the piston-rod bears against the end of the cylinder. In this position of the valve, pressure fluid is admitted to the cylinder D and the load is hoisted.
Patent GB-1497953-A (GB)
Title: Method and a device for producing distilled water using solar energy
IPC: F24S23/30
Filed: 1976-02-16
Abstract: 1497953 Solar still YAO CHEN TSAI 16 Feb 1976 05998/76 Heading BIB A solar still has a plurality of convex lenses 314 that concentrate sunlight to heat water contained in a vaporization chamber 10, the resulting water vapour rising through holes or slits 143 in a transparent portion 14 and into a condensation chamber 20 where it is cooled and condensed by virtue of cooling air passing through a cooling air chamber 30 (e.g. through slits 312) provided directly above the said condensation chamber, the resultant condensate being collected in grooves provided on said partition 14 and leaving the still by means of a trough 144 and a suitable outlet 146 (Fig. 1 not shown). The base of chamber 10 may comprise a metallic plate 11 topped by an insulating plate 12 and a heat absorption plate 13. The spaces between lenses 314 may be filled with annular ring patterns. The base of chamber 10 may contain a central trough, and a valve (to allow water and salt crystal removal), and wash pipes 51 (Fig. 4 not shown). Reflecting adjustable concave mirrors 80 (Fig. 4 not shown) may additionally be used.
Patent GB-213742-A (GB)
Title: Improvements in stockless anchors
IPC: B63B21/44
Filed: 1923-03-02
Abstract: 213,742. Coltart, C. B. March 2, 1923. Anchors.-The arms 4 are provided with terminal necks 12 which are secured by shrinkage to the plate 1 being passed through holes therein when the plate is heated. The arms, which are prevented from turning by keys 15, are additionally secured by rings 13 screwed or shrunk on to the projecting ends. The central part of the plate 1 is pressed to form half bearings 5 for the trunnions 3, transverse plates 7 secured by rivets forming the other half bearing.
Patent GB-1072003-A (GB)
Title: Improvements in or relating to air-bearing arrangements for displacing heavy masses
Inventor: LEHMANN RUDOLF
IPC: B65G7/00
Filed: 1965-02-11
Abstract: 1,072,003. Anti-friction devices for moving heavy loads. DEUTSCHE AKADEMIE DER WISSENSCHAFTEN ZU BERLIN. Feb. 11, 1965, No. 6040/65. Addition to 1,029,893. Heading B8B. Anti-friction air-bearing pads for moving heavy masses according to the parent Specification have a communicating passage 12, Fig. 3, between the bearing gap and the resilient aircushion chamber 10 beneath the load-supporting pad 5 so that the pressure in the cushion is controlled by the load. An air leakage passage 13 is provided between the main air supply chamber 9 and the passage 12 and a spring- loaded check-valve 16 is also provided in the passage 12 to effect higher pressures in the cushion chamber 10. In modifications the leakage passage 13 and valve . 16 may be omitted.
Patent GB-483772-A (GB)
Title: Improvements in electric discharge devices whose filling comprises alkali metal vapour
IPC: H01J61/30
Filed: 1937-03-01
Abstract: 483,772. Glass manufacture. GENERAL ELECTRIC CO., Ltd. (Patent-Treuhand-Ges. f³r Elektrische Gl³hlampen) March 1, 1937, No. 6064. [Class 56] A glass which resists attack by alkali metal vapours contains 20-30 per cent of B2O3, 20-30 per cent of Al2O3, 4-9 per cent of SiO2, 30-40 per cent of alkaline earths, and 6-10 per cent of alkalies. The envelope of an electric discharge tube containing alkali metal vapour may consist of the resistant glass flashed on to the surface of a soft soda glass, of well known kind, composed of 65À5 per cent of SiO2, 2 per cent of Al2O3, 1 per cent of K2O, 16À5 per cent of Na2O, 5À5 per cent of CaO, 3À5 per cent of MgO2 and 2 per cent of BaO.
Patent GB-144388-A (GB)
Title: Improvements in or relating to audible warning or signalling devices of the vibratory diaphragm type
IPC: G10K9/10
Filed: 1919-03-11
Abstract: 144,388. Monnot, J. F., and Cook, E. T. March 11, 1919. Diaphragm vibrators.-In vibrators of the kind operated by a rotary cam or the like a, the cam is adjusted axially by a resilient or pivoted member f loosely engaging the cam shaft. As shown, the member f is adjusted by a pair of nuts k.
Patent GB-433734-A (GB)
Title: Improvements in supports or holders for cotton or like reels
IPC: D05B91/14
Filed: 1934-02-24
Abstract: 433,734. Workboxes; reel holders. STIBBS, F. C., Mount Pleasant, Kingswinford, near Dudley, Worcestershire. Feb. 24, 1934, No. 6083. [Classes 18 and 133] A workbox has cotton &c. reels 14 detachably mounted on its exterior, the holder for a reel comprising a separate sheet metal bracket with spaced arms 15 each of which carries a trunnion engaging in the end of the bore through the reel. The reels may be mounted vertically or at an angle to the horizontal, and may also be mounted on the base or top of the box. The middle portion of a bracket is secured to the inside of the box and the arms 15 pass through the walls, or, alternatively, the bracket is riveted to the outside of an octagonal box with straight sides and ribs 11 are not provided. The trunnions are constituted by part-spherical pips pressed out of the arms whose enlarged ends correspond to the diameter of the reels, or each trunnion comprises a spring-pressed ball 20 held in a collar 21 and housing 22 which are screwed together with the arm 15 clamped between them. Apertures 17<a> formed when the lugs 17 are punched out of the brackets, or other holes, allow the label on the reel to be seen, and a row of apertures 24 in the arms serve to decorate the latter. A cylindrical celluloid cover surrounds each reel and the thread passes out through an eyeletted hole in the cover and through a guide 25. Specification 405,672 is referred to. According to the Provisional Specification, the reel holders may be mounted inside the box.
Patent GB-368967-A (GB)
Title: Improvements in unpuncturable pneumatic wheels for motor vehicles
IPC: B60B9/20
Filed: 1931-02-27
Abstract: 368,967. Vehicle wheels. ARMSTRONG, C., 12, Hailes Street, Gilmore Place, Edinburgh. Feb. 27, 1931, No. 6155. [Class 144 (i).] A resilient wheel comprises an outer rim 5, an inner disc 6, and pneumatic rubber balls 7 held in cups 10, 11 provided in the periphery of the inner disc 6 and the inner periphery of the rim 5 respectively. The balls 7 are simultaneously inflated through a valve connection 14 bv means of tubes 12. The inner disc 6 comprises two plates secured together after the balls 7 are inserted, and each plate is provided with parts 18 which project outwardly over the sides of the outer rim 5 to keep it in alignment with the inner disc 6. The cupped portions 10, 11 may be formed with beaded edges which engage rings moulded on the balls 7.
Patent GB-1535002-A (GB)
Title: Switch machine with internal locking
IPC: B61L5/10
Filed: 1977-02-15
Abstract: 1535002 Points machine INTERNATIONAL STANDARD ELECTRIC CORP 15 Feb 1977 [19 Feb 1976] 6182/77 Heading B7H In a railway points machine with two throw rods 2, 2<1>, one for each rail switch blade, which are moved by a throwing force applied via spring box 4 non-positively coupled to a shoe 7 disposed between the throw rods and formed with slots L, L<1> which receive pins 8, 8<1> on the throw rods, the machine is arranged to operate with trailable or non-trailable points by providing different shaped recesses in the throw bars which co-operate with locking bars 9, 9<1> and different length slots L, L<1> in the slide.
Patent GB-706884-A (GB)
Title: Means for fixing a sheet of glass or the like in an opening in the wall of a cabinet
IPC: H03J1/02
Filed: 1952-03-11
Abstract: 706,884. Glazing. COLE, Ltd., E. K., WHITE, J. K., and WILSON, F. C. March 10, 1953 [March 11, 1952] No. 6236/52. Class 20 (3) An aperture in the wall of a cabinet is glazed by fitting the glass A into a moulded plastic surround C and fitting the latter in the wall B, abutments D, E being provided for the glass and wall respectively. The surround C is provided with a flange H having slots J in which leaf springs K are positioned, the springs engaging the backs of the slots, wall and glass. The glass may be the tuning scale of a radio receiver or a protective plate for the cathoderay tube of a television receiver.
Patent GB-452726-A (GB)
Title: Improvements in the structure of fuselages, wings and other bodies of aircraft
IPC: B64C1/08
Filed: 1935-02-27
Abstract: 452,726. Aircraft structures. VICKERS (AVIATION), Ltd., and WALLIS, B. N., Byfleet Road, Weybridge, Surrey. Feb. 27, 1935, No. 6254. [Class 4] Aircraft fuselages, wings, or other bodies are constructed of longitudinal members a, a<1>, &c., and two series geodetic members b, c, continuous between the longitudinal members, shaped to the contour of the body, of greater depth than width, twisted about their neutral axes so that they are normal to the surface and recessed at their intersections with one another so that the two series can fit into each other. As shown, the members b, c are formed of channels having inturned flanges. Gusset plates d extend across the interrupted flanges C<SP>2> and are riveted to the flanges of the members whose webs are connected by angle plates e. The longitudinal members are built up of back-to-back channels a4, a<5> with stiffening strips a<6>, a<7>, a<8>. The geodetic members, at the ends of the structure are attached to a hoop. Specifications 388,438 and 412,232 arc referred to.
Patent GB-783243-A (GB)
Title: Improvements in and relating to knob assemblies
IPC: G05G1/08
Filed: 1956-02-29
Abstract: 783,243. Ornamental knobs. UNITEDCARR FASTENER CORPORATION. Feb. 29, 1956 '[March 25, 1955], No. 6383/56. Class 52(1) An ornamental cap 14 is secured to the knob 12 of a vehicle control rod or the like by the engagement of a peripheral series of resilinet legs 32 with the walls of a continuous e.g. circular groove 20 on the .end of the knob.
Patent GB-1114911-A (GB)
Title: Bilateral signal transmission system having a combined dynamic range control and echo suppressor arrangement
IPC: H04B1/64
Filed: 1966-02-14
Abstract: 1,114,911. Echo suppressor and compandor. COMPAGNIE FRANCAISE THOMSON HOUSTON-HOTCHKISS BRANDT. 14 Feb., 1966 [17 Feb., 1965], No. 6407/66. Heading H4R. Four wire signalling system includes compressors and expanders for each direction of transmission in which the amount of compression at each transmitter is signalled by a pilot signal to the expander at the corresponding receiver and in which the incoming and outgoing compression control signals are compared at each terminal to effect directional switching. The figure shows a system in which speech at terminal 100 in station A is applied via hybrid 102 to compressor amplifier 110 the output from which is applied to the line 122, via hybrid 116, and to a rectifier circuit 128 to derive a control signal for the compressor 110. Terminal 130 of rectifier 128 is negatively biased so that only control signal amplitudes above a minimum level will pass through rectifier 132 to be effective in reducing the gain of compressor 110. The control signal is also applied to a frequency modulator 144 to modulate oscillator LO to produce a frequency-modulated pilot signal which is mixed with the compressed speech signal at the output of hybrid 116. At the receiver the incoming signals are separated by filters 252 and 254 the speech being fed to expander 256 and the pilot signal to limiter demodulator 260 to generate an expander control signal at 262 to apply to the expander 256 so that the gain of the system overall is maintained at unity. At each station the control signal received from the remote station, present at say 262, is compared in a diode gate circuit with the locally generated compressor control signal, present at say 236, and the larger of these signals is applied to control the compressor amplifier e.g. 210. By this comparison if, for example, speech is incoming to station B the expander control signal at point 262 will, in the absence of any attempt to break in by the speaker at station B, be larger than the locally generated compressor control signal at point 236 so that the signal from point 262 will, via diode 264 cause compressor amplifier 210 to reduce its gain, this reduction will cause a reduction in the output of rectifier 228 which on application to the modulator 244 will signal for a low gain condition of the expander amplifier 156 so that echo received back at station A will be severely attenuated both in compressor 210 and expander 156.
Patent GB-156024-A (GB)
Title: Improvements in headlight dimmers
IPC: F21V11/16
Filed: 1920-03-03
Abstract: 156,024. Brown, R. March 3, 1920. Vehicle lamps.- In a vehicle head lamp having a paraboloidal back reflector 2, the upper half of the lantern front is covered by a rearwardly-reflecting surface of paraboloidal form, both paraboloidal surfaces having a common focus and a common axis. The rearwardly-reflecting surface may be formed on a separate piece of metal attached to the front glass, or an integral projection 7 on the front glass may be mirrored to serve as a reflecting-surface 10.
Patent GB-729968-A (GB)
Title: Improvements in sewing machines
IPC: D05B29/00
Filed: 1953-03-10
Abstract: 729,968. Hinges. UNION SPECIAL MACHINE CO. March 10, 1953 [March 20, 1952], No. 6509/53. Class 65(2). [Also in Group VII] The presser bar 40 of a sewing machine is fixed to a pin 50 slidably and rotatably mounted in spaced bearings 52, 56 in the machine frame 20. A pivoted latch 76 is biased by a spring 82 to engage a groove 80 in the pin for holding the latter in the retracted position against the bias of a spring 62 interposed between the bearing 56 and a collar 58 fixed to the pin. On release of the latch, spring 62 moves the pin outwardly, when a spring-based plunger 64 in collar 58 cooperates with a cam surface 70 on frame 20 to effect simultaneous rotary movement of the pin. Specifications 672,098, [Group VII], and 691,894 are referred to.
Patent GB-207447-A (GB)
Title: Improvements in chain grate stoker links
IPC: F23H11/04
Filed: 1923-03-07
Abstract: 207,447. Babcock & Wilcox, Ltd., and Brown, J. March 7, 1923. Grates.-In chain-grate stokers comprising individually renewable links 1 mounted on carrying-bars 3, the links in a transverse row are each formed with an aperture 4 penetrated by a removable locking-rod 5 secured by washers and split pins. The links are in overlapping formation and have open-ended slots 2 to receive the carrying-bars, the apertures 4 being positioned between the slots.
Patent GB-194536-A (GB)
Title: Improvements in or relating to valves controlling byepasses in hot water heating or like installations
IPC: F16K11/052
Filed: 1922-03-06
Abstract: 194,536. Haden, W. N., Haden, C. L, and Adlam, T. N. March 6, 1922. Fluid-actuated valves.- In hot-water circulation systems employing a pump or accelerator, the flow of water along a pipe a causes a hinged valve e to close upon its seat g thus closing a bye-pass exit b. If the pump should fail, the valve falls by its own weight and the byepass comes into operation.
Patent GB-840173-A (GB)
Title: Improvements in or relating to electric motor control systems
Inventor: FRIEDLANDER ERICH SIEGFRIED
IPC: B66B1/12
Filed: 1957-02-27
Abstract: 840,173. Controllers. GENERAL ELECTRIC CO. Ltd. Feb. 26, 1958 [Feb. 27, 1957], No. 6616/57. Class 38 (3). [Also in Group XXXV] In a system for a motor driving a load, such as a winder cage, over a predetermined distance, having manually-actuated means for varying the motor speed and a programming arrangement for predetermining the speed at any position, the manual speed varying means are arranged automatically to alter the speed in accordance with the difference between an electrical quantity proportional to the actual speed and an electrical quantity proportional to the programmed speed for the particular position of the load if the difference exceeds a predetermined amount. Lever 1 controls a potentiometer wiper, a multiple tapping transformer, or an induction regulator 14 for producing a speedcontrolling signal, and a cam 3 driven by the motor sets the wiper 6 of potentiometer 7 to produce a speed-setting voltage in opposition to the voltage from tachometer 2 whereby control coil 8 of a magnetic amplifier 9 is energized when the speed varies from the desired speed. A motor 12 having a high resistance rotor to which the output of the magnetic amplifier is applied, is arranged, in conjunction with a clutch energized also by the magnetic amplifier, to drive the hand lever and thus correct the motor speed. The driver may overcome the force produced by the motor 12 if he so wishes. A flywheel motor 11 and a further winding 10 of the magnetic amplifier are connected across the tachometer 2 to improve stability. Motor 12 may be relay-operated. Specification 803,224 is referred to.