baber/WOPTO huggingface dataset:
Patent GB-1478642-A (GB)
Title: Differential circuit with signal balance
IPC: H03D1/18
Filed: 1974-08-07
Abstract: 1478642 Differential amplifier SONY CORP 7 Aug 1974 [10 Aug 1973] 34827/74 Heading H3T A transistor circuit comprising a first differential amplifier formed of a first pair of transistors Q 1  Q 2  having an input terminal for an input signal 1 connected to one Q 1  and another input terminal coupled to the other Q 2 , a second differential amplifier Q 5  Q 6  having a pair of input-terminals connected to a pair of output terminals of the first amplifier and at least one output terminal A for producing an output signal substantially in phase with the input signal, a load circuit coupled to the second amplifier for D.C. biasing the collectors to provide a predetermined offset voltage at the said output terminal A, and a feedback circuit R 9 , Q 13 , D 2  connected between the output terminal and the other input terminal of the first amplifier, said feedback circuit including an emitterfollower transistor Q 13  whose base emitter junction is in series with a diode D 2  to substantially cancel the offset voltage from the signal produced at the output terminal A and fed back to the first amplifier. The input signal is applied to one side of a differential amplifier Q 1 , Q 2  which has resistive loads R 1  R 2  and current sources Q 3  Q 4  to enable the loads to be high in value. The differential output is applied to a second differential amplifier Q 5  Q 6  also having current sources Q 11  Q 12  and resistive loads R 6  R 7 . The potential at one output A, of the 2nd differential pair is coupled via emitter follower Q 13  and temperature compensating diode D 2  to the other input of the first differential amplifier in a negative feedback sense to stabilize the mean potential at A against for example temperature effect. The frequency response of the A.C. feedback round the same loop is set by R 12  and C in series. The common point of the resistive loads R 1  R 2  is connected via diode D 1  to the linked bases of the current sources Q 3  Q 4  thereby setting the common point to a level about 2V BE  below supply. The common point of the other loads R 6 , R 7  is connected via the emitter-base junction of transistor Q 10  to the linked bases of Q 11  Q 12  current sources thereby setting the common point to a level about 2V BE  above earth. The majority of the collector current of Q 5  Q 6  is intended to flow over Q 11  Q 12  to make point A and point B close to the same potential, about 2V BE  above earth. A preferred use of the amplifier is to drive a full wave rectifier Q 7  Q 8  from the outputs A B, the resultant waveform having equal amplitudes for the half waves derived from alternate half cycles of a balanced sine wave input 1. The output is taken from an emitter follower Q 9  and the level in the absence of a signal is close to zero volts, the voltage drops across Q 7  (or Q 8 ) and Q 9  being equal to those of Q 10  and Q 11  (or Q 12 ). It is stated that the potentials at A and B can be made equal even if the transistors do not have identical h fe  and V BE .
Patent GB-465970-A (GB)
Title: Improvements in television apparatus
IPC: H04N3/08
Filed: 1935-12-16
Abstract: 465,970. Television. TRAUB, E. Dec. 16, 1935, No. 34848. [Class 40 (iii)] In scanning devices of the kind comprising both stationary and rotating scanning members which receive the light beam in succession, the stationary member is so mounted that it is rotationally adjustable about the axis of the rotating member, to enable correct framing to be effected. The Figure shows apparatus of the kind described in Specification 425,552, modified in accordance with the invention by so mounting a ring 10 carrying on a bracket 9 a system of fixed mirrors 3 that it is rotationally adjustable about the axis of the motor-driven mirror drum 1 ; adjustment is effected by means of a worm 11. In a modification, Fig. 2 (not shown), of apparatus of the kind described in Specification 448,238, each of the two components comprising a rotary mirror drum co-operating with a fixed mirror system is constructed similarly to the single scanning device shown in the Figure. Specifications 394,446, 412,026,419,120,429,690, and 440,055 also are referred to.
Patent GB-448270-A (GB)
Title: Improvements in or relating to drying or cooling apparatus for biscuit tins, chocolate and like purposes
IPC: F26B15/18
Filed: 1934-12-05
Abstract: 448,270. Drying or cooling apparatus. GIUSTI, T., and GIUSTI, R. B., 52, Pembroke Street, Islington, London. Dec. 5, 1934, No. 34944. [Classes 29 and 34 (ii)] A drying or cooling apparatus which may be used for treating biscuit tins and chocolate, and for similar purposes, comprises two compartments separated by a partition formed with slots increasing in size from one end to the other of the partition, hot or cold air being forced by fan means and baffles to pass through the slots from one compartment into the other compartment, through which the articles to be treated travel on one or more conveyer bands. In the construction shown, biscuit tins 4 are conveyed on an endless band 5 through a tunnel 1 which is divided into two compartments by a floor 10. The floor is perforated and provided with baffles 11, the perforations and baffles being of increasing size from the front to the rear of the tunnel. A fan 6 is adapted to blow heated or cooled air through the upper compartment, the air being directed by the baffles through the perforations in the floor so as to heat or cool the passing tins 4. A door is provided in the front of the tunnel for admission of fresh air. The air may be heated by means of one or more burners 7. A refrigerator coil replaces the burners if the apparatus is used for cooling purposes. The apparatus is preferably provided with two conveyer bands arranged side by side but adapted to move in opposite directions.
Patent GB-176527-A (GB)
Title: Improvements in points or switches for overhead runways
IPC: E01B25/26
Filed: 1920-12-11
Abstract: 176,527. Paterson, D. C. Dec. 11, 1920, Single-rail and suspended vehicles.-A trolly f running on an elevated single track, has an axle g carrying a main wheel h and also a subsidiary wheel j for engagement with a subsidiary rail d at the points to maintain the equilibrium of the trolly.
Patent GB-507591-A (GB)
Title: Improvements in or relating to district heating plants
IPC: F24D10/00
Filed: 1937-12-17
Abstract: 507,591. Power generating systems. MARGOLIS, A. E. Dec. 17, 1937, No. 34974. [Class 122 (iii)] A combined power and district heating plant includes back pressure turbo-generators, exhaust heat storage and direct supply to suitably, situated districts and thermal storage of electric energy and heat supply for other districts. Generators 3, 4, 5 supply mains 6. Exhaust steam, from generator 3 heats water for storage at 12 and supply to district A. Generator 5 supplies steam for heating district B, operating generator 17 and also for heating water to supply district C. In district D water is heated by an electric boiler 26 supplied from the mains 6. In district E steam is generated in electric boiler 31 for supply to a turbo-generator 33, the exhaust from which heats water stored at 35 and supplied therefrom to buildings. Accumulators for electric thermal storage may generate high-pressure steam for power generation in peak periods, the turbine exhaust either being supplied direct for heating buildings or for heating water,
Patent GB-1057300-A (GB)
Title: Process for stabilsing polyolefines
IPC: C08K5/132
Filed: 1964-08-26
Abstract: Polyolefins are stabilized with mixtures of certain bisphenol alkanoic acid esters or amides with organic phosphites.  In the examples the stabilizers used are selected from 3,3-bis-(4-hydroxy-3-methyl phenyl) butanoic acid dodecyl ester, 4,4-bis-(4-hydroxyphenyl)-pentanoic acid dodecyl ester, octyldiphenyl phosphite, triphenyl phosphite and tridodecyl phosphite.
Patent GB-1444033-A (GB)
Title: Power operated cultivator
IPC: A01B1/06
Filed: 1974-08-08
Abstract: 1444033 Power cultivator BLACK & DECKER MFG CO 8 Aug 1974 [15 Aug 1973] 35012/74 Heading A1B A portable power-operated hand cultivator 11 comprises a frame 13 having a motor 15 supported thereon which through a transmission oscillates two or more generally vertically disposed cultivator tine assemblies 21 extending downwardly from the frame 13. A handle 27 is provided for easy control but may be replaced by a short reanwardly extending handle. The motor 15 may be electric or petrol operated and the transmission converts rotary motion of the motor 15 to oscillatory motion of the tine assemblies 21.
Patent GB-1172069-A (GB)
Title: Brazing Lead-in Conductors for Ferrules in Sealed-Beam Lamps
IPC: H01K3/20
Filed: 1968-07-23
Abstract: 1,172,069. Brazing. WESTINGHOUSE ELECTRIC CORP. 23 July, 1968 [11 Aug., 1967], No. 35026/68. Heading B3R. . In brazing a lead-in wire to a metallic ferrule in a sealed-beam lamp, the ferrule having a closed bottom portion and an open rim portion, a finely divided brazing composition is provided to fill the bottom portion, the composition within the ferrule is compacted by a compressive force, the rim portion is sealed to the reflector of a sealed beam lamp and the wire is brazed to the ferrule by the composition. A ferrule 14 for a sealed beam lamp is mounted in a mould 10, Fig. 4, and the bottom thereof is filled with finely divided brazing material 16 which is compacted by a die 18. The ferrule is removed from the mould and is forced into heat softened glass around an aperture 22, Fig. 5, in the reflector 20 of a sealed beam lamp. Brazing flames 24 heat the ferrule and melt the compacted material 16 into which the lead conductor 26 is inserted and the flame is removed. The brazing composition may be entirely brass or entirely bronze or a mixture of brass and bronze with an addition of 5% of a flux, e.g. borax and possibly of 1% silica. The brass may be 55-80% Cu, 20-45% Zn and the bronze 70-90% Cu, 10-30% Sn.
Patent GB-802790-A (GB)
Title: Apparatus for stripping tubular castings from molds and cleaning the castings
IPC: B22D13/10
Filed: 1956-11-16
Abstract: 802,790. Cleaning pipes. AMERICAN CAST IRON PIPE CO. Nov. 16, 1956 [Dec. 28, 1955], No. 35072/56. Class 99(2). [Also in Groups XXII and XXIV] In a pipe stripping apparatus (see Group XXII) pipes are supported in turn on rotating rollers 119, and scrapers 138 are moved by a piston 135 into position to remove adherent foreign matter from the exterior of the pipe. The pipes are lowered onto, and removed from the rollers by a vertically movable cradle 120. The interior of the bell end of the pipe may be cleaned of adherent core sand &c., by a scraper 144, moved into and out of operative position by a pneumatic cylinder 147. Specification 717,515 [Group XXII] is referred to.
Patent GB-349057-A (GB)
Title: Process for the photographic recording of sound
IPC: G11B7/00
Filed: 1929-11-18
Abstract: 349,057. Recording sound. LAUDET, G. A. C., 212, Rue de Vaugirard, Paris. Nov. 18, 1929, No. 35209. Convention date, March 7. Void [Published under Sect. 91 of the Acts]. [Class 40 (ii).] Optical apparatus and records.-An optical record of sound is produced on a travelling sensitized surface by the formation thereon of two traces representing the amplitude variations, the space between the traces representing the part subjected to the light beam. In one method, light from a source 7, Fig. 3, passes through a diamond-shaped aperture constituted by plates 8, 9, one or both of which are vibrated in accordance with the sound to vary the aperture, and through an optical system 13 to the travelling surface 15. Both of the lateral corners of the diamond-shaped image produce traces representing the amplitude of the sound, and the amount of light falling on the space between the traces also varies as the amplitude varies owing to the variation in size of the image of the aperture, which variation in conjunction with a suitable emulsion and developer produces density-effects which modify the record produced and the reproduction therefrom. In another method, light from a source 17, Fig. 4, passes through a stationary triangular aperture 16 in a plate and through an optical system 18 to a mirror 20 which is oscillated in accordance with the sound and reflects an image of the triangular aperture 16 so that the apex thereof falls on the travelling surface 19 and the remainder on a plate 24 in front of the surface, two traces and an intervening space of varying density being again produced. Instead of the plates 8, 9 being provided with obtuse angled recesses one may have a straight edge the other having a single or double curve or an obtuse angle to form an elongated aperture, or one may be formed with a triangular slot and the other with a slit, or the aperture may be formed by four plates. It is stated that the plates may be separately influenced simultaneously by different parts of the sound to be recorded, for example, by the singer and orchestra respectively, whereby the influence of any part can be controlled. Oscillograph wires carrying the sound currents and forming between them the aperture may replace the shutter plates 8, 9.
Patent GB-984440-A (GB)
Title: Liquid delivery method and apparatus
IPC: C03B5/26
Filed: 1962-09-17
Abstract: <PICT:0984440/C1/1> <PICT:0984440/C1/2> A method of feeding liquid, particularly molten glass, from a parent supply body 11 thereof, comprises withdrawing liquid by suction from a submerged region of such body 11 through a metering tube 15, 16, 17 to a height above the top level of the supply body 11 so as to flow into a side entrance of a vertically disposed tube 18, the bottom end of which is submerged in a second supply 23 of the liquid, maintaining a desired head of the liquid within the lower part of tube 18 to give a uniform delivery rate from the lower end thereof, and varying the degree of suction applied to produce a desired flow rate through tube 15, 16, 17 to give the desired head of liquid within tube 18.  The molten glass 11 is contained in a tank 10 with overflow pipe 13 and the metering tube 15, branched at 16, 17 to raise the tube above the glass line, extends through an extension 14 of the furnace 12, heated by an element 24.  The tube 18 terminates in the molten glass 23 in a shallow container 19 from which the glass overflows into the delivery funnel 20.  As shown in Fig. 3, an electrically-heated glass collector wire 21 may be secured to the end 22 of the funnel 20 for delivery of the liquid.  The wire may be separate from the end 22. The top end of tube 18 is in communication with a vacuum source and the tube is provided with a valve 27 to be opened to atmosphere when the glass flow is to cease or for feeding glass intermittently.  A needle valve 28 is provided to assist in maintaining the exact degree of suction for a desired rate of feed.
Patent GB-385739-A (GB)
Title: Improvements in and relating to drawing apparatus for spinning machines
IPC: D01H13/04
Filed: 1931-12-22
Abstract: 385,739. Drawing-apparatus for spinning-machines. KRAFFT, A. KYM- and KYM, E., Schopfheim im Bad, Wiesenthal, Germany. Dec. 22, 1931, No. 35483. Convention date, Dec. 3. [Classes 120 (i) and 120 (ii).] In drawing-apparatus for spinning-machines such as ring frames and mules a yielding drawing-device, including a yielding nipping- point, constituted by a roller c and a leather belt d, is arranged at a distance always less than the length of the staple from a fixed nipping-point a<1> formed by a ribbed roller b and a co-operating trough a. The roller b is pressed against the trough and the material is prevented from spreading by side cheeks a<2>. The roller c is provided with ribs c<1>, Fig. 2, or is of polygonal cross section, so that the distance between the nip a<1> and the contact of the roller c and the belt d varies continuously, but is never longer than the greatest length of staple, the shortest distance being from 10 to 15 mm. shorter than the greatest length of staple. The belt d passes over a roller f driven by a toothed wheel t from the shaft of roller c, a suitable bight being formed by a rubber roller h, and is tensioned by a lever q. The arc of contact of the belt and the roller c is varied by adjusting a guide roller g<2> of the belt. The top front roller k is formed of rubber with or without a leather cover, and is provided with a bushing u, Fig. 4, ribbed at u<1> in line with the path of the yarn between the rollers. A condenser consisting of two separate parts o<1>, o<2> suitably shaped so as to provide a converging passage terminating in a small slot p for leading the material to the middle of the front rollers, and so as to conform with the peripheries of the adjacent rollers f, c, i, k, is mounted behind the front rollers. Specifications 187,213, 281,359, and 306,104, [all in Class 120 (ii), Spinning, twisting, &c.], are referred to.
Patent GB-1072644-A (GB)
Title: Improvements relating to brazing alloys of the copper-nickel-zinc type
IPC: B23K35/30
Filed: 1964-08-31
Abstract: A brazing alloy has the following percentage composition:-  Cu 50 - 55 Ni 4 - 8 Zn not less than 25 Si and/or P 0.1 - 1  The alloy may also contain B up to 0.01, Sn1, Cd 0.1 - 15, Mn 0.1 - 15, Ag up to 5.
Patent GB-870272-A (GB)
Title: Improvements in or relating to bins
IPC: A01C3/02
Filed: 1957-11-18
Abstract: 870,272. Compost making bins. DAVIS, G. M. Feb. 17, 1959 [Nov. 18, 1957], No. 35783/57. Class 111. A bin for the reception of garden, kitchen and other waste for conversion into compost, comprises a plurality of separate unconnected sections preferably of square or rectangular shape in plan view, each having a vertically disposed surrounding wall and a substantially unobstructed interior, the sections being arranged to rest freely on top of one another to define a continuous, vertical tubular shaft for the reception of the waste, and spacing members carried by the sections so that the surrounding walls of adjacent superposed sections are spaced apart to provide air spaces, the bore of the shaft being substantially unobstructed. As shown the bin is provided with a readily detachable roof 3 of flexible material which may be folded back to inspect the contents of the bin and has attachment means 5 which hook under the uppermost section in use to hold the roof in position.
Patent GB-910237-A (GB)
Title: Improvements in or relating to thermal lagging means for pipes
IPC: F16L59/02
Filed: 1959-10-23
Abstract: 910,237. Thermally insulating and heating pipes. ISOPAD Ltd., and MOLLER, R. Jan. 19, 1961 [Oct. 23, 1959], No. 35959/59. Class 99(2). Sheet sheathing for thermal lagging on pipes comprises readily separable upper and lower sheathing sections 3, 4, Fig. 1, the upper sheathing section of which extends through more than 180 degrees with the marginal end portions overlapping those of the lower sheathing section, and by its resilience maintaining both sheathing sections in place. Metal sheathing 3, 4, is sprung on or slid on laterally on lagging 1, 2, with the upper section 3 overlapping the lower section 4. End cups 5, 6, Fig. 2, 3, having cutaways 7 are fitted with the upper portion 5 overlapping the lower portion 6. In non-horizontal pipe runs, the lower end of each pair of sheathing sections  overlaps the upper end of the adjacent pair. In another embodiment the lagging may be attached e.g. by adhesive, to the sheathing so that the upper sheathing overlaps the semicylindrical lagging at each side to overlap and support the lower lagging and sheathing section which only extends through 180 degrees of arc. Adjacent pairs of sections are arranged in overlapping relationship with upper and lower overlapping part-cylindrical pieces arranged to encircle the joint line. To enable the upper shell to be sprung over the lower shell, the upper lagging may not be attached to the upper sheathing at the marginal edge portions. End caps having transverse walls which extend only through 180 degrees of arc may be used on either embodiment. The upper and lower sections may be additionally secured by metal straps. The meeting faces of the sheathing sections may be sealed by an adhesive or by polyvinyl chloride tape. The lagging may be of fibreglass and may be fitted with electric heating tapes or panels, connected to weatherproof junction boxes fitted to the lower sheathing sections. Specification 713,768 is referred to.
Patent GB-783672-A (GB)
Title: Terpolymers and compositions containing the same
IPC: C08F218/08
Filed: 1955-12-15
Abstract: A process of sizing yarns, e.g. nylon, which will accept an acid size comprises applying an aqueous composition containing 2-15 per cent of a terpolymer of vinyl acetate 50-52 mol. per cent, maleic anhydride 30-40 mol. per cent and 10-20 per cent of a reaction product obtainable by esterifying maleic anhydride with 20-50 mol. per cent of a b -alkoxyethanol, the alkoxy group containing one to four carbon atoms. The solution is preferably applied at 100-200 DEG  F. and in an amount of 0.5 to 10 per cent by weight of the terpolymer based on the dry weight of yarn.  The yarn may be dipped or sprayed, passed through squeeze rolls and air-, oven- or can-dried at 140-250 DEG  F. The sizings are firmly adherent, tough and abrasion-resistant but may be readily removed by a scouring or scraping in a mild soap solution.ALSO:Terpolymers of vinyl acetate (50-52 mol. per cent), maleic anhydride (30-40 mol. per cent) and 10-20 mol. per cent of a reaction product obtainable by esterifying maleic anhydride with 20-50 mol. per cent of a b -alkoxy ethanol, in which the alkoxy group contains one to four carbon atoms, e.g. methoxy, ethoxy, propoxy, butoxy and mixtures thereof, are prepared by heating the monomers in the presence of a free radical catalyst first at 50-70 DEG  C., then at 40-60 DEG  C. for 12-25 hours and thereafter gradually raising the temperature to 100-120 DEG  C. over 30-40 hours.  Suitable catalysts are peroxides, hydroperoxides, per-salts and azo compounds, e.g. t.-butyl perbenzoate, and modifiers such as b -nitrostyrene or a mercaptan may be present. Aqueous solutions of the terpolymer are used as sizing agents for textiles and nylon yarns.  Humectants, e.g. glycerine, ethylene, propylene, and polyethylene glycols, sorbitol, polyglycerols and polypropylene oxides; sulphonated animal, mineral and vegetable oils and mixtures of such oils with animal, mineral, vegetable and Twitchell oils; and wetting-agents such as sodium salts of alkyl substituted benzene sulphonates, alkali metal and ammonium monoalkyl sulphosuccinates, acid-stable non-ionic condensation products of ethylene oxide with alkylated phenols; and alkyl mercaptans may be included in the sizing composition.
Patent GB-177258-A (GB)
Title: Improvements in and relating to chests of drawers and other articles containing drawers and/or other sliding receptacles
IPC: A47B13/00
Filed: 1920-12-22
Abstract: 177,258. Lebus, H. A. H., Lebus, S., and Lebus, L. H., (trading as Lebus, H.). Dec. 22,1920. Drawers and drawer fittings.-The underside of a drawer is provided with a guiding-member, which consists of wooden strips 11, 18 of uniform cross-section to engage corresponding guidegrooves 17 or guide-strips 8 on the upper surface 6 of the drawer framing. The bar 11 extends centrally for the whole width of the drawer and forms a part of the drawer bottom.
Patent GB-1514782-A (GB)
Title: Paper-winding units
IPC: B65H18/10
Filed: 1975-09-03
Abstract: 1514782 Winding webs K J SHAKESPEARE 31 Aug 1976 [3 Sept 1975] 36198/75 Heading B8R A web winding apparatus comprises an electric motor 1, carried by a mounting plate 2 and having an overhanging shaft 3 which supports the web roll wound thereon. A web roll core is supported on hubs 7 provided with ribs 9 and associated with flanges 5, 6. The motor is controlled by a switch 19, which is energized when a pivotally mounted bar 14 is in its lowermost position and tripped when the bar is in its uppermost position.