baber/WOPTO huggingface dataset:
Patent GB-829233-A (GB)
Title: Improvements in or relating to circuit arrangements for starting and operating heated-cathode electric discharge lamps from an alternating current supply
Inventor: CATES JULIUS
IPC: H05B41/232
Filed: 1957-06-28
Abstract: 829,233. Supply systems for space discharge apparatus. GENERAL ELECTRIC CO. Ltd. June 27, 1958 [June 28, 1957], No. 20524/57. Class 38 (4). A circuit arrangement for starting and operating an electric discharge lamp 5 having heatable cathodes comprises a ballast inductor 8 connected between a supply terminal 1 and a lamp terminal 3, a capacitor 9 being connected in parallel with the discharge path of the lamp 5, so arranged that the inductor 8 and the capacitor 9 are at, or near, resonance at the supply frequency, windings 11, 12 associated with the inductor 8 being provided to supply heater current to the lamp electrodes. A resistor 10 is provided in series with the capacitor 9 to improve the waveform of the supply current, to improve the stability of the lamp discharge and to render the lamp starting voltage less dependent on variations in the frequency of the supply voltage. An earthed conductor 13 is included to facilitate starting. Two or more lamps may be serially connected across the supply terminals 1, 2.
Patent GB-906647-A (GB)
Title: Improvements in or relating to pattern control devices of textile machines
Inventor: HOPKINSON JOHN CURTIS
IPC: D04B15/66
Filed: 1959-06-16
Abstract: 906,647. Knitting-machines. HOSIERY & ALLIED TRADES RESEARCH ASSOCIATION. Sept. 15, 1960 [June 16, 1959], No. 20550/59. Class 74 (2). A counter 4 is driven from the pattern chain of a knitting-machine and is preset so that on completion of a predetermined number of courses a switch is caused to close. A feeler 7 also is provided to press against the side of the chain, and the last link determining the last course of a cycle corresponding to the same number of predetermined courses is recessed so that the feeler moves and opens a switch 6. If the chain is of the correct length corresponding to the predetermined number of courses to which the counter has been set, the one switch will be closed as the other is opened so that the circuit of a stop-motion controlling the machine is not completed and the machine can continue in operation whereby the counter is reset to open its switch and the feeler 7 closes the switch 6 as it comes in contact with the first link of the next cycle. On the other hand, if the pattern chain has been made up of an incorrect number of links, the two switches at one stage will both be closed whereby the stop motion is operated to stop the machine. Specification 861,879 is referred to.
Patent GB-1503335-A (GB)
Title: Relay protection arrangement for high-voltage networks
IPC: H02H1/04
Filed: 1975-05-15
Abstract: 1503335 Preventing unwanted tripping of protective systems ASEA AB 15 May 1975 [20 June 1974] 20559/75 Heading H2K A filter 10 for removing low frequency and aperiodic transients from a signal supplied to a measuring relay 13 is normally short-circuited and is only switched into the signal path on occurrence of a fault which causes undervoltage in the network being protected, operation of the relay 13 immediately thereafter being prevented for a time sufficient to allow transients effects in the filter to die down. An output signal from a fault detector 3 readies the filter 10 by removing its shortcircuit and at the same time triggers a monostable 5. If the fault causes undervoltage, voltage detector 4 will also respond, and this causes the filter 10 to be connected (14) into the relay circuit, but at the same time, via AND gate 9, blocks the relay until the cessation of the monostable pulse. The relay may be part of a distance protection system.
Patent GB-708749-A (GB)
Title: Process for the production of antibiotically active substances known as rhodomycins
Filed: 1951-08-31
Abstract: An antibiotic rhodomycin is produced by growing Streptomyces purpurascens NRRL-2269 under aerobic conditions in a nutrient medium. Rhodomycin is amphoteric; empirical formula C20H29O7N; consists of two components having average molecular weight of 420; contains neither sulphur nor methoxy groups; yields red-coloured solutions in acidic media, purple-coloured solutions in neutral media and blue-coloured solutions in alkaline media; soluble at the isoelectric point (pH8.4-8.6) in alkanols having up to 4 carbon atoms, chloroform, ether, water and acetone; is precipitated from aqueous solutions by picric acid, picrolonic acid and perchloric acid; decomposes when heated with aqueous acidic media; forms salts with mineral salts and with alkalies; absorption band maxima in benzene at 575,542, 535, 504 millimicrons, in acetic anhydridepyroboric acetate mixture at 587, 542 and 505; effective against Staphylococcus aureus in dilutions of 1 in 30,000,000.  Salts are also formed with stannous chloride, mercury chloride, chlorauric acid, potassium chromate, chloroplatinic acid, helianthin, alizarine sulphonic acid, anthraquinone sulphonic acid, iodine in potassium iodide, phosphotungstic acid, phosphomolybdic acid, b -naphthalene sulphonic acid, styphnic acid and strong mineral acids, e.g. hydrochloric, phosphoric and sulphuric.  The nutrient medium contains a carbon source, e.g. glycerin, glucose or dextrin, a nitrogen source, e.g. glycocoll, alkali metal nitrates, glycine ethyl ester hydrochloride or tyrosine, and mineral sources, e.g. sodium chloride, secondary potassium phosphate, ammonium sulphate, ferrous sulphate, calcium carbonate and Hoagland's solution.  Yeast liquor or corn steep liquor may be present.  Rhodomycins are obtained from the culture solution or mycelium.  The culture solution is concentrated, acetone and basic lead acetate added, and extracted with butanol at pH 8.6.  Butanol solution is extracted with 10 per cent acetic acid and the rhodomycins precipitated as picrate.  The powdered mycelium is extracted with acidified acetone water or acidified methanol-water, the mycelium centrifuged off, and impurities precipitated from the neutralized centrifugate from which the organic solvent has been removed, by basic lead acetate.  The aqueous filtrate is extracted with butanol, and then the butanol extract is extracted with aqueous acetic acid.  The antibiotic is precipitated from the acid extract by picric acid.
Patent GB-686616-A (GB)
Title: Production of expanded films and tubing
IPC: B29C55/02
Filed: 1950-08-22
Abstract: <PICT:0686616/IV (a)/1> Apparatus for laterally stretching films or tubes of rubber hydrochloride or other plastic material comprises a pair of drums rotatable about spaced horizontal axes, means for heating one of the drums by an externally applied liquid heating medium, means for cooling the other drum by an externally applied liquid cooling medium, means for longitudinally advancing a continuous film or flattened thin-walled tube from one drum to the other, and a heated lateral stretching device located between the drums and adapted to coact with opposite edges of the film or flattened tube so as to effect the desired lateral stretching.  The film or tube is stretched to such an extent that further stretching under normal conditions of use is substantially eliminated.  The treated film or tube may be used for packing or encasing foodstuffs such as sausages.  As shown, a film or flattened tube 5 is led round and beneath drum 8 and through a bath of hot liquid contained in tank 9.  The softened film or tube then passes to the lateral stretching device which comprises a pair of relatively inclined rotating discs 11 which engage opposite edges of the film or flattened tube 5.  The stretched film or tube is then passed to drum 13 under which it is led through a cooled liquid in tank 14, and it is finally wound on roll 16.  The discs 11 may be angularly adjustable to permit variation of the stretch applied.  Each disc may have a peripheral groove 17 which receives an endless belt 18, so that the film or tube edges are gripped between the discs and belts.  Hot liquid from nozzle 20 may be sprayed on to the film or tube just before the stretching device is reached.  The discs and belts are heated by the liquid in tank 9.  The setting operation may be initiated by spraying cold liquid from nozzle 21.  The longitudinal tension on the travelling film or tube may be adjusted to produce longitudinal stretching.
Patent GB-408845-A (GB)
Title: Improvements in or relating to window channels
IPC: B60J10/04
Filed: 1933-07-22
Abstract: 408,845. Woven fabrics for window channels. STEVENS, A. H., 5, Quality Court, Chancery Lane, London.-(Sohlegel Manufacturing Co. ; 277, North Goodman Street, Rochester, New York, U.S.A.) July 22, 1933, No. 20734. [Class 142 (iv).] A longitudinally and transversely flexible channel for fixed or sliding window panels is made from a strip woven partly or wholly of non-metallic material and preferably partly of metallic material. The warp strands 21, 22, as shown in Fig. 3, are non-metallic and the weft strands 23, 24 are metallic, the latter being crossed over a warp strand 25 at the point where the channel is to be bent. The edges of the strip may be reinforced by a thicker warp strand 36 and a metal beading 37. A pile warp 31 may be connected to the warp strands at the sides and bottom of the channel or a separate pile fabric may be connected to the channel when formed. The weft strands may be separate in the sides and middle as shown in Fig. 8. The strip when woven entirely of textile material may be weakened at the points of junction of the sides and base by using finer warp strands or by wider spacing of said strands at these points, and may be reinforced by flexible wire 85 secured by stitching, as shown in Fig. 14. The channel may be lined with padded fabric, the pads extending towards the channel or towards the glass, or both, or relatively thick warp strands 122 may be linked with spaced weft strands, as shown in Fig. 22. The channel may be secured to the frame by tacks or the like and may be cut away at the base to allow the corner of a rectangular panel to protrude, as shown in Fig. 5.
Patent GB-478439-A (GB)
Title: Improvements in and relating to the attachment of insulating or like sheets or slabs to the purlins or like members of walls, roofs or partitions
IPC: E04D3/36
Filed: 1936-07-27
Abstract: 478,439. Roofs ; walls. INKLEY, B. July 27, 1936, No. 20776. [Class 20 (iv)] An assembly for forming a roof, wall, or partition comprises purlins 5, thin metal sections 10 transversely disposed thereon, an outer casing 14, and an inner casing formed of sheets or slabs 6, the sheets or slabs 6 and the metal sections 10 being held between the outer casing 14 and the purlins 5 in such a manner that, viewed from the inside, the adjacent edges of adjacent sheets or slabs running in one direction are positioned behind the metal sections. The sheets or slabs 6 may be of fibreboard, asbestos board, or the like, and the outer casing may be in the form of corrugated iron or other sheet material. The purlins 5, as shown in Fig. 1, are supported by brackets 4 from a roof truss 1, and the metal sections 10, which, as shown in Fig. 4, are bent to an inverted-T-shape with stiffening channels 12, are arranged transversely across the upper flanges of the purlins and may be secured thereto by screws or the like. The stiffening channels 12 are cut away where the sections cross the purlins. If desired, the metal sections 10 may be employed without the central web 11 so that adjacent slabs or sheets are in abutting relation. A further form of metal section 11 comprises, as shown in Fig. 5, a flat web portion 20 connecting two trough portions 19 adapted to receive, slidably, wooden strips 22 secured to the sheets or slabs 6. The sheets 14 may be connected together at their edges by screws and may be secured to the purlins by hook bolts 16, screws, or wires.
Patent GB-896969-A (GB)
Title: Improvements in or relating to control apparatus for electrically heated appliances
Inventor: TYLER HUGH JEAN
IPC: H05B1/02
Filed: 1959-06-17
Abstract: 896,969. Thermal switches; cam-actuated switches. ROBERTSHAW-FULTON CONTROLS CO. June 17, 1959 [Aug. 11, 1958], No. 20840/59. Class 38 (5). [Also in Group XXXV] A cooker control unit comprises a manuallyoperable switch 12 and a thermally-operable switch 14, the switch 12 being operated, and the point at which the switch 14 operates being set, by means of a control-knob fixed to a shaft 124. Movement of the shaft 124 causes rotation of two cams 102, 104 carried thereon, the upper cam 104 controlling a cam follower 140 formed on a member 138 which is pivoted at a point 142 and carries an insulating member 146 movement of which selects the manner in which the blades 32, 34 and contacts 36, 38 of the switch 12 are connected. The lower cam 102 cooperates with a cam follower 130 to cause movement of a lever 90 thereby setting the position of a pin 88 about which a lever 84 operates. The lever 90 is operatively connected to the cam follower 130 by a member 134 spring-loaded by a spring 136 so that under certain conditions the lever 90 can pivot about a pin 96 carried by the cam follower 130. The temperature of the cooker is sensed by a bulb 83 attached to a capillary tube 82 and connected to an expansible diaphragm 76. Expansion of the diaphragm 76 causes a projection 78 thereon to move downwards (as shown in Fig. 3) to cause the lever 84 to rotate anticlockwise about the pin 88, thereby depressing operating member 48 of the switch 14 such that the switch 14 cycles between its OPEN and CLOSED positions. The amount of movement required by the projection 78 to operate the member 48 depends on the position of the pin 88 which in turn depends on the position of the cam 102 and the shaft 124. Adjustment of the diaphragm 76 is effected by means of a threaded stud 74. The switch 14 is of the form disclosed in co-pending Specification 896,121.
Patent GB-758091-A (GB)
Title: A new or improved cushion device
IPC: A47C16/00
Filed: 1953-07-28
Abstract: 758,091. Cushions. JESSIMAN, J. B. July 28, 1954 [July 28, 1953], No. 20858/53. Class 52(4). A rectangular air cushion 10 has integral tabs 15 by which it is secured to a belt 18 used to fasten the cushion to a chair or to the user. The longitudinal edges may have co-operating fasteners 28, 29 to hold the cushion when longitudinally folded for use as a neck rest.
Patent GB-1011638-A (GB)
Title: Treatment of glass
Inventor: RAY NEIL HUNTER
IPC: C03C15/00
Filed: 1963-05-24
Abstract: Glass is strengthened by treating it with a molten salt whose cations replace some of the cations of the glass and occupy a greater volume, the treatment being carried out either with an etching-agent for the glass dissolved in the molten salt or after treatment with an etching-agent dissolved in a molten salt whose cations do not replace those of the glass.  The salt with the replacement cations is potassium nitrate, the etching-agent may be sodium or potassium fluoride or borofluoride, silver fluoride or ammonium fluorosulphonate, and the salt whose cations do not replace those of the glass is sodium nitrate.  The etching-agent is present in amount by weight of 20-60% of the salt, the treatment is carried out at 400-450 DEG  C., and for 10-30 minutes in the one-stage process or 10-15 minutes for the first stage and 3-10 minutes for the second stage for the two-stage process.  A catalyst or modifier, e.g. silver, a silver salt (nitrate), or a salt of monovalent gold or monovalent thallium may be added to the cation replacement salt in amount of 2-5% by weight according to the Provisional Specification, potassium hydroxide can be used as the etching-agent.
Patent GB-1502792-A (GB)
Title: Analogue to digital converter
IPC: H03M1/18
Filed: 1975-05-16
Abstract: 1502792 Analogue-to-digital conversion COMMUNICATIONS SATELLITE CORP 16 May 1975 [17 May 1974] 20920/75 Heading H3H An input voltage signal having a predetermined range of variation is digitized by a quantizer 40 covering only a part of the range, an offset being added to or subtracted from the input voltage when it lies below or above the range of the quantizer, the offset being removed when the input voltage returns to a value well within the range of the quantizer. For a T.V. signal, which lies within 25-75% of its maximum value for 95% of the time, the range of the quantizer is 25-75% and the offset is plus or minus 25% as appropriate and is removed when the T.V. signal returns to at least 40% or drops back to no more than 60% of its maximum value. The quantizer 40 may comprise eight threshold circuits in parallel (Fig. 3, not shown). In Fig. 2, under- and over-range signals are fed to flip-flops 52, 36 respectively for adding or subtracting offset V x  from the input voltage, sampled and held at 16. Encoder 42 produces a binary output code to which compensatory subtraction or addition of the binary equivalent of V x  is performed at 48. Decoders 44, 46 detect return to values of 35% and 65% (# input voltages of 60% and 40%) for removing the offset. The offset is also automatically removed at the start of each scanned line of a T.V. picture by the T.V. synch pulses LS. In another arrangement, Fig. 4 (not shown) application and removal of the offset is controlled by analogue comparators (92, 94, 102, 104) responsive to 75%, 60%, 25% and 40% input voltages respectively. A delay (90) allows the offset switching induced transients at the summing point (30) to subside before the input signal is sampled.
Patent GB-1351995-A (GB)
Title: Standby heart pacer
Inventor: BOWERS D L
IPC: A61N1/365
Filed: 1971-04-19
Abstract: 1351995 Standby heart pacer GENERAL ELECTRIC CO 19 April 1971 [10 March 1970] 20950/71 Heading A5R A standby heart pacer comprises a pace pulse generator 51 having output terminals for connection to the heart for its artificial stimulation and a pulse timing network comprising a timing capacitor 54, resistors 55, 56 and adjustable resistor 57 for controlling the generator to deliver artificial heart stimulus pulses at a predetermined interval, a detector coupled to the output terminals and responsive to the occurrence of a natural heart stimulating signal to produce a control signal, the detector including a device 61 responsive to pulse generator pulses to provide an inhibiting signal on occurrence of a pace pulse, and a hysterisis network 41 responsive to receipt of a control signal in the absence of an inhibiting signal for altering the timing of the generator timing network so that the period between the last natural heart stimulus and generation of the next artificial pace pulse is different from the predetermined interval between artificial pulses from the generator. The pacer features both positive and negative hysterisis, i.e. the pacer does not supply an artificial pace pulse until the heart beat has dropped to a predetermined minimum beating rate and which then stimulates at a higher rate (negative), and where the pacer turns on the high fixed rate artificial pulse generator soon after a natural beat has occurred than the interval which would elapse between consecutive high rate artificial pulses (positive). The circuitry of Figure 1 can be implanted in the human body in a solid epoxy resin coated with body tolerant material such as silicone rubber, whereas the device of Figure 2 is primarily intended for external use. Figure 1 includes also a transistor 16 which serves as a switch. The emitter-tobase circuit of the transistor 16 is shunted by a magnetically operable reed switch 17 so that transistor 16 may be rendered non-conductive by closing reed switch 17 with a magnet when the heart pacer is implanted in the body.
Patent GB-1293372-A (GB)
Title: N-halo bleaching agents and additives
Inventor: HARDY FREDERICK EDWARD
IPC: C11D3/395
Filed: 1969-04-25
Abstract: 1293372 Detergent bleaching compositions PROCTER & GAMBLE Ltd 24 April 1970 [25 April 1969] 21200/69 Heading C5D [Also in Divisions C2 and D1] Detergent bleaching compositions contain compounds of the formula where X is chlorine or bromine and M is a cation (see Division C2). In examples: a control washing solution (A) is prepared containing a linear alkyl benzene sulphonate, sodium toluene sulphonate, tripolyphosphate, silicate, perborate, carboxymethyl cellulose and sulphate and coconut monoethanolamide and solutions (B) and (C) containing in addition sodium N-chloro-N- methyl-o-sulphobenzamide are prepared and employed to treat standard tea stained cloth swatches (IV) and further solutions (A) are prepared with sodium perborate omitted but with the addition of N-bromo-N-methyl-osulphobenzamide and, for comparison, N- bromo-benzene sulphonamide, and employed to wash tea-stained cloth swatches (V). In Example (VI) solution (A) is spray-dried and mixed with N-chloro-N-methyl-o-sulphobenzamide.
Patent GB-531426-A (GB)
Title: Improvements relating to apparatus for testing water
IPC: G01N21/77
Filed: 1939-07-21
Abstract: 531,426. Photo-electric apparatus for testing water; automatic control of humidity. MAGRATH, A H. July 21, 1939, No. 21258. [Class 40 (iii)] [Also in Group XXXV] Relates to apparatus for testing water for the presence of substances in solution, especially for residual reagent such as chlorine used in treatment of the water, by the addition to the water of a testing reagent (e.g. ortho-toludine for chlorine testing) which imparts a colouration or turbidity to the liquid depending upon the amount of the substance present. According to the invention, the testing reagent is supplied to the water from a tank 7, Fig. 1, under constant head through a tube 12 mounted on a float 8 floating on the reagent in the tank. The tube 12 may be a tube containing a wick, but is preferably a capillary tube. The water to be tested is supplied to a vessel 1 in which the level 2 is maintained constant by an overflow pipe 3. Water from this vessel passes through a stop valve 4 and a regulating valve 5 to a funnel 6 where it mixes with the testing reagent from the tube 12. From this funnel, the liquid passes through a tube 14 to a tubular chamber 15, the dimensions of the funnel 6 and tube 14 being such as to give time for the reaction to take place before the liquid falls into the chamber 15. The level in this chamber is maintained constant by an overflow pipe 16. The chamber 15 has a tubular wall of ebonite closed at the ends by glass discs 19; and light is passed through this chamber from a lamp 22 to a photoelectric cell in a casing 25. The output of the cell P, Fig. 5, which may be amplified, controls two relays R1, R2 operating at different currents. When the chlorine content is below normal, the circuit is as shown in the figure and a lamp L showing white is alight. If the chlorine content increases to normal, relay R1 operates and opens contact 28 and closes contact 29, lamp L is put out and lamp N lighted showing green. If the chlorine content increases above normal, relay R2 operates and opens contact 30 and closes contact 31, lamp N is put out and lamp H lighted showing red. When the chlorine content decreases, the relays R2, R1 successively return the contacts to the positions shown in the figure. The lamps serve to direct the actions of the operator of the chlorinating apparatus. The circuit may be made to control the chlorinating apparatus automatically, to maintain normal chlorination, for which purpose the relays R2, R1 can be provided with additional contacts or the lamps may be replaced by relays serving to open and close valves to regulate the chlorine.
Patent GB-999416-A (GB)
Title: Improved organosilicon compositions
IPC: C08L83/04
Filed: 1964-05-22
Abstract: The invention comprises a process for making a silicone rubber stock, and is substantially the same as that claimed and described in the parent Specification, except that ammonium bicarbonate is used instead of ammonium carbonate.  Specification 881,789 also is referred to.