baber/WOPTO huggingface dataset:
Patent GB-616004-A (GB)
Title: Improvements in or relating to radio and other carrier communication systems
IPC: H04B1/54
Filed: 1946-08-01
Abstract: 616,004. Radio receiving circuits. 1ZARCONI'S WIRELESS TELEGRAPH CO., Ltd. Aug. 1, 1946, No. 22983. Convention date, Aug. 4, 1945. [Class 40 (v)] A two-way carrier communication station comprises a carrier frequency amplifier common to the transmitter and the receiver, the carrier frequency for transmission being derived from a combination' of the outputs from two crystal controlled oscillators and one variable frequency oscillator, and an output derived from one of the crystal oscillators and the variable oscillator being heterodyned with the incoming signal to provide intermediate frequency energy for reception. In Fig. 1, the output from a crystal controlled oscillator 1 operating at a frequency fc, together with the output from a variable low-frequency amplifier 29 operating at a frequency fo is applied to a balanced modulator 22. The upper side band output'from modulator 22 is selected by tuned circuit 38, 40, 39, and applied to frequency multiplier 44. A tuned circuit 50, 51 selects the frequency n(fc+fo) from the output of multiplier 44. During reception, the contacts of two position switch 78 are thrown to the right, and the incoming signals are applied through carrier frequency amplifier 74, together with the output from multiplier 44 to receiver converter 81, the output from which is applied to I.F. amplifier 82 and thence through lowfrequency amplifier 83 to loudspeaker 84. During transmission, the contacts of switch 78 are thrown to the left, and the output from multiplier 44 is then applied to a frequency converter stage 61. The oscillator section of stage 61 is crystal controlled and operates at the same frequency as the intermediate frequency portion of the receiver, so that the output from stage 61 is at a frequency equal to n(fc+fo)+fy. This output is applied via switch 78 to the carrier frequency amplifier 74 and thence to buffer amplifier 85, modulator 86, amplifier 88 for transmission from aerial 76. Modulating signals from microphone 77 are also applied, after amplification, to modulator 86, to modulate the carrier wave. By utilising crystals of frequencies of 2000, 2300, 2600 and 2900 kc/s. and arranging for the frequency of oscillator 29 to vary between 600 and 900 kc/s. a frequency band of 2600 to 3800 kc/s. may be covered. Variable condensers 39, 51, and that in amplifier 74, may be ganged to facilitate control. An alternative coupling circuit (Fig. 2, not shown), which filters out the frequency fc is described to replace the circuit 38, 40, in the input to multiplier 44. Permeability tuning may be employed and the two inputs to balanced modulator 22 may be interchanged.
Patent GB-1420650-A (GB)
Title: Additive for non-clay wellbore fluids
IPC: C09K8/06
Filed: 1973-03-23
Abstract: 1420650 Well fluids J M JACKSON 23 March 1973 22999/75 Divided out of 1420649 Heading E1F An additive composition for non-clay wellbore fluids comprises a lignosulphonate salt and magnesia. The preportion of magnesia is such that there is more than will dissolve in the well-bore fluid and sufficient to cause a significant drop in the fluid loss. In the Example, calcium lignosulphonate is used with magnesia as an additive to a brine well-bore fluid.
Patent GB-1304408-A (GB)
IPC: D01D5/253
Filed: 1970-05-12
Abstract: 1304408 Non-circular acrylic filaments JAPAN EXLAN CO Ltd 12 May 1970 [12 May 1969] 23031/70 Heading B5B An acrylic filament of non-circular crosssection is made by extruding a spinning solution of an acrylic polymer consisting of polyacrylonitrile or an acrylonitrile copolymer containing at least 70% by weight of acrylo. nitrile units and at least one other ethylenically unsaturated monomer copolymerizable with acrylonitrile through a spinneret orifice into air or into an inert gaseous medium which does not coagulate the spinning solution and then into a coagulating bath, said spinneret orifice comprising one rectangular slot or a plurality of rectangular slots connected to each other about a common point and extending radially therefrom. Fig. 2 shows suitable spinnerets. Desirably, the viscosity of the spinnirg solution at the time of the extrusion, the ratio of the major and minor axes of the rectangular slots, and the distance between the lower surface of the spinneret and the upper surface of the coagulating bath are selected within the three dimensional range having peripheries defined by the points a to u shown in Fig. 1. Conventional spinning solvents and coagulating baths are used; the use of sodium thiocyanate solutions is exemplified.  In Fig. 3, the spinning solution is extruded through spinneret 1, having orifices as in Fig. 2, and passes through an inert gas or air gap into coagulating bath 3. The gel filament 10 is removed by godet roller 4, washed with water at rollers 5, subjected to primary thermal stretching in bath 6 and dried on drying roller 7. The filament so obtained is subjected to secondary stretching in chamber 8, into which steam is introduced, and heat-treated under dry heat with roller 9. Fig. 4 shows a flowing bath type spinning system, which enables spinning velocity to be increased, facilitating the production of filaments of low denier. Coagulating solution is fed through feed pipe 14, near the bottom of the jacket 15, so that the level of the coagulating bath remains constant. Spinning solution extruded through spinneret 1 passes through the inert gas or air gap into the funnel 12 of the coagulating bath and the formed filament is moved downwardly together with the coagulating solution through the tube 13 and into the coagulating tank 16. The filament 19 is removed from the tank by godet roller 17, and is then washed and treated as above. Excess coagulant is removed through discharge pipe 18 and recovered.
Patent GB-1182473-A (GB)
Title: Improvements in or relating to Ion Pumps
Inventor: AUBRY BERNARD MICHEL
IPC: H01J41/20
Filed: 1967-05-18
Abstract: 1,182,473. Ion pumps. SOC. GENERALE DU VIDE. 18 May, 1967 [18 May, 1966; 17 March, 1967], No. 23053/67. Heading H1D. The anode structure of an "orbitron" ion pump is symmetrical with respect to a plane P into which electrons are injected. In one arrangement, Fig. 1, electrons are injected in a fan-shaped beam from an electron gun 3, 4 in the plane P and then move in spiral paths to anodes 5 and 6 at least part of the surface of which is formed of getter metal, e.g. Ti, so as to emit active material under the electron bombardment. Further Ti grid electrodes 11 and 12 are maintained at earth potential to emit active material under positive ion bombardment. In Fig. 2, the anode is an axial wire 15 of W, Mo or Ta, and a separate Ti source is provided in the form of a blade 16 and heating filaments surrounded by screens 17, 19 and 21. Electrons are emitted into the plane P by a filament 14. Composite arrangements (Figs. 3 and 4, not shown) are described in which four parallel cylindrical grid electrodes each with an axial wire anode surround a central electron and Ti emitter, or four units, as shown in Fig. 2, are arranged in star formation in communicaton with a common central chamber.
Patent GB-693089-A (GB)
Title: Quick disconnect coupling for electric power cables
Inventor: ANDERSON JOHN WALLEN
IPC: H01R13/20
Filed: 1951-10-03
Abstract: 693,089. Two-part couplings. AIRTRON, Inc. Oct. 3, 1951, No. 23076/51. Class 38 (i). A device for connecting power cables consists of a male member 12 with a contact finger 18 having an annular groove 102 cut in it, and an indexing pin 91 within an annular recess 91a; and of a female member 14 having a conducting sleeve 58 prolonged in the form of a tube 80, there being longitudinal slits 92 dividing the tube into several contact fingers 94 with a spring 96 encircling their free ends. Within the tube 80 is an index element 82 with a bore 90 to receive the indexing pin 91. A sleeve 108 with a locking portion 110 is urged to the right by a spring 116. To connect the two members 12 and 14 the sleeve 108 is moved to the left and the member 14 is pushed on to the finger 18, locking of the finger 18 within the fingers 94 being achieved by means of a plurality of balls 100, placed in apertures 104 in oertain of the fingers 94, the inner apertures of which are of lower diameter than the balls, which are forced into the groove 102 and held there by the portion 110 of the sleeve 108 when released. The indexing pin 91 and the bore 90 are of complementary cross-section for each different set of cables to be connected in order to prevent mismatching. The contact 18 is bolted to a panel 16 through the intermediary of an insulating flange 28 and metal reinforcing plate 34, the flange bearing on a metal washer 20 secured to the contact 18 by a dowel pin 22, and located by tongues 54 in recesses in the contact. The cable 66 is secured in a lateral bore of the sleeve 58 by means of an axial screw 70 having a semi-spherical end 72 for gripping the cable and a screwdriver slot 74 which is accessible before the parts are completely assembled. The contact parts may all be jacketed with rubber.
Patent GB-279223-A (GB)
Title: Improvements in latches or locks
IPC: E05B63/04
Filed: 1926-09-20
Abstract: 279,223. Shaw & Co., Ltd., A., and Rose, C. E. Sept. 20, 1926. Reversible locks and latches. - In a latch or lock having a reversible head, the tail-piece of the bolt is provided with an enclosed slot or elongated eye. engaged by the shank of the head or a flange thereon. In one form, Fig. 3, the head 5 is detachably connected to the tail piece 1 by a flange 9 passed laterally through the slot in the tail-piece, the end of which enters a groove 8 in the shoulder of member 5. The part of the tail piece against which the shank 6 of the head 5 rests may be bent out at 3 to be flush with the end of flange 9 and the side of member 5 as shown. In another form the tail piece, Fig. 8, of the bolt is bent laterally to provide an end flange 10<a> and lugs 4, the flange 10<a> having the slot 11. The shank of the head which is without flanges, is passed through the slot 11 and lies adjacent to the tail-piece between the lugs 4, being secured by a screw or pin passed through a hole 12 and a corresponding registering hole in the shank. In a further modification the tail of the bolt is bent laterally to U-form, Fig. 11, the terminal flange, 10<b> having a. recess 11<b>, and the bottom of the U a slot 2<b>. The short shank 6b of the head, Fig. 10, is passed laterally into the recess 11<b>, with the flange 9<b> through the slot 2b.
Patent GB-726653-A (GB)
Title: Improvements in or relating to electric light fittings
IPC: F21S8/00
Filed: 1950-09-21
Abstract: 726,653. Electric lighting fittings. STUDHOLME, J., and BENJAMIN ELECTRIC, Ltd. Dec. 20, 1951 [Sept. 21, 1950], No. 23183/50. Class 75 (4). In an electric lignting fitting wherein one or more discharge lamps 14 are supported in a reflector 16 for operation in conjunction with filament ballast lamps 17, the light from the discharge and ballast lamps is directed respectively in substantially opposite directions. As shown discharge lamp holders 13 are supported from end plates 12 held by clips 15 on flanges 10a of the mouth of a channel 10 and a ballast lamp holder is secured to each end wall of the channel 10. A downwardly facing trough reflector 16 is detachably secured to the reflector mouth and reflectors 19, 20 are secured above and below each ballast lamp 11, flaps 10b being cut from the side walls of the channel 10 adjacent each lamp and bent outwardly to provide baffles which direct light from the ballast lamps upwardly when the fitting is suspended. Specifications 645,226 and 726.652 are referred to.
Patent GB-392889-A (GB)
Title: Improvements for the production of alumina from alkaline earth aluminates
IPC: C01F7/18
Filed: 1931-08-18
Abstract: Solutions containing basic aluminium salts and alkaline-earth metal salts, obtained for instance from alkaline-earth aluminates by the process described in the parent Specification, are treated with insufficient ammonia to precipitate the whole of the alumina, whereby the precipitate may be readily filtered, and after slight drying be freed from occluded salts without sliming.  Residual solution is added to a fresh batch prior to its partial precipitation.
Patent GB-442864-A (GB)
Title: Endless track vehicles
IPC: B62D55/10
Filed: 1934-08-10
Abstract: 442,864. Endless-track vehicles. LITTLE, L. F., Cornerways, Weir Road, Chertsey, Surrey. Aug. 10, 1934, No. 23201. [Class 79 (i)] [See also Group XXXII] In an endless-track vehicle the load is received on each track 21 through the medium of a number of supporting wheels or rollers 3 .. 6 of substantially the same diameter, each of which takes a part of the load and is in contact with both the upper and lower stretches of the track, the wheels on both sides of the vehicle being articulated to the vehicle both longitudinally and laterally of the vehicle to impart stability on uneven ground. The articulations may be rendered temporarily rigid when desired, e.g. for crossing ditches. In the construction shown, the wheels are mounted in pairs 3, 4 and 5, 6 independently swinging about the ends of main balance beams 11 each of which is pivoted to the chassis frame 12, and the ends of the beams being connected together by transverse equalizing levers 22, 23 pivoted at their centres to the frame. The wheels 3 are mounted on arms 7 pivoted on the ends of the beams 11 and controlled by springs 13 which are fixed to the beams and connected to the arms by links 17. The other wheels are similarly mounted on arms 8-10 controlled by springs 14-16 fixed to the beams. Any or all of the arms may be prevented from rocking on the beams by means such as catches 28 pivoted to the beams and adapted to engage projections 29 on the arms. The catches may be controlled from the driver's seat by links 30, 31. In order to accommodate a larger number of wheels within a given wheel-base alternate wheels may be arranged in co-axial pairs, the alternate single wheels being centrally-disposed between the wheels of adjacent pairs. The engine 24 drives the rear wheels 6 through transverse cardan shafts 25 and gearing 26.
Patent GB-1143133-A (GB)
Title: Improvements in or relating to ship's accommodation ladders
Inventor: NOULIAN GLAUCO
IPC: B63B27/14
Filed: 1966-05-25
Abstract: 1,143,133. Ship's ladders. CANTIERI RIUNITI DELL' ADRIATICO S.p.A. 25 May, 1966, No. 23266/66. Heading A6L. The upper platform 1 of a ship's accommodation ladder 10 has two arms 5 pivoted to the ship the arms have surfaces which engage the side of the ship to hold the platform in horizontal position. The platform includes a non-slip wooden grating 3.
Patent GB-1038978-A (GB)
Title: Improvements in and relating to the manufacture of regenerated cellulose fibres fromviscose
Inventor: WOODING NORMAN SAMUEL
IPC: D01F2/06
Filed: 1962-06-19
Abstract: 1,038,978. Treating viscose rayon fibres. COURTAULDS Ltd. June 18, 1963 [June 19, 1962], No. 23473/62. Heading B5B. The extensibility of viscose rayon fibres having a crystallinity of more than 50% (measured by an X-ray method) is increased by impregnating the freshly-spun, never-dried, regenerated fibre in a relaxed state with a solution containing 0À5 to 8À0% by weight of caustic soda at 20‹ to 80‹ C. for at least 5 minutes. The caustic soda solution may be applied to the fibres as a desulphurizing step, instead of conventional desulphurizing agents. In examples, samples of a viscose prepared and spun as disclosed in Specification 915,803 are desulphurized in 1-6% caustic soda solutions for 25-30 minutes at 50-70‹ C.
Patent GB-171458-A (GB)
Title: Improvements in electric arc lamps
IPC: H05B31/00
Filed: 1920-08-11
Abstract: 171,458. Railing, A. H., and Angold, A. E. Aug. 11, 1920. Arc lamps.-An electrode-holder comprises long spring-closed tongs, the hand end of one member of which is formed as a terminal socket B<4>, Fig. 4, this end being so remote from the arc that a fireproof covering for the cables is unnecessary. The spring E, Fig. 5, is placed near the terminal and has sufficient leverage to grip the carbon C without the aid of a screw while capable of depression by hand when decarboning. In an upper electrode-holder, Figs. 2 and 5, the member A' may be provided with perforated lugs A<3>, A<4> sliding on a rod I, and a perforated lug A<5> sliding on a rod K, the rods being secured to a bracket pivoted at H upon the upper rack L. The holderis adjusted backwards and forwards by a nut M having a flange M<1> engaging a slot in the member A<1>, as shown in Fig. 4. The lower holder, is. attached directly to the lower rack F<1>. According to the Provisional Specification, the rack-rods may be mounted in a pivoted guide which engages each at three points only; to prevent the lower carbon-holder from engaging the frame through the racks being turned completely vertical, a sloping stop engaging the bottom of the rack is provided.
Patent GB-1474417-A (GB)
Title: Spring balances
IPC: G01G3/00
Filed: 1974-05-28
Abstract: 1474417 Spring balance SCHMIDT METALLWAREN FABRIK OHG GEBR 28 May 1974 [13 Aug 1973] 23504/74 Addition to 1448710 Heading G1W A spring balance as shown in Fig. 1, in which vertical movement of a load receiver 1 is converted into movement of a pointer 17 over a horizontal scale by means of a pin 12 extending into a slot 13 of a wheel 14 carrying the pointer 17, is provided with magnetic means to prevent errors due to play between the pins 12 and slot 13. As shown in Fig. 2, a magnet 26 may be provided and pin 12 may be of ferromagnetic material. Alternatively, pin 12  may be magnetic and a portion of wheel 14 of ferromagnetic material, or both the pin 12 and a portion of the wheel 14 may be magnetic.
Patent GB-256806-A (GB)
Title: Improvements in cardboard or paper cups, jars and the like
IPC: B65D43/02
Filed: 1925-09-21
Abstract: 256,806. Smith, H. Sept. 21, 1925. Lids and covers; rims of openings; non-metallic hollow-ware. - The rim of a paper or like cup or other vessel of the kind having a groove b for seating a disc cover c is formed with a pair of adjacent vertical slots extending to the upper edge of the groove and enclosing between them a tongue-piece e which may, as shown, be turned down to enable the cover to be raised by the finger nail.
Patent GB-794873-A (GB)
Title: Neutralization of friedel-crafts catalyst
Inventor: SCHNEIDER HELMUTH GUSTAV
IPC: B01J27/06
Filed: 1956-07-31
Abstract: In iso-olefine polymerization processes using Friedel-Crafts catalysts in which the polymer and catalyst are contacted with aqueous sodium hydroxide and allowed to stand at a temperature of 20 DEG  to 65 DEG  C. to form two layers to destroy and remove the catalyst into the aqueous layer, the aqueous sodium hydroxide is used in an amount to produce a mol. ratio of caustic soda to total catalyst of from 3.5 to 1 to 6 to 1.  In examples, polyisobutylene, produced as a slurry in hexane, using an aluminium chloride catalyst, is allowed to contact the sodium hydroxide solution preferably at 50 DEG  to 65 DEG  C., and settled into two layers, the pH of the aqueous layer being maintained between 9.5 and 12.5.  Lubricating oil may be added before separation to yield an oil-polymer solution.
Patent GB-483536-A (GB)
Title: Improvements in or relating to safety razor blades and safety razors
IPC: B26B21/16
Filed: 1937-08-28
Abstract: 483,536. Safety razors. FAIRWEATHER, H. G. C. (Durham Duplex Razor Co.) Aug. 28, 1937, No. 23633. [Class 30] The holder is formed with end walls 14 having cam surfaces 17 adapted to engage with flexible tongues 21, integral with the blade, Fig. 4, when the latter is inserted beneath an upper guard plate 15 with the edges 27 engaging the inside faces of the walls 14. The body of the blade is thus urged against the guard 15. Triangular portions are cut out of the blade at 24 to form the tongues. Projections 19 hold the blade in shaving position.
Patent GB-813473-A (GB)
Title: New piperazine derivatives and the production thereof
Filed: 1957-07-25
Abstract: The invention comprises piperazine derivatives of the formula: <FORM:0813473/IV (b)/1> and acid addition salts thereof, wherein the two R1 substituents are the same and are alkyl radicals of 1-8 carbon atoms and n is zero or a whole number from 1 to 10, preferably 1 to 6, and the preparation of these compounds by the following methods: (1) treating an ethylene diamine derivative of the formula: <FORM:0813473/IV (b)/2> with an alkylene dihalide in the presence of an acid-binding agent; (2) treating piperazine with an aralkyl halide of the formula: C6H5.(CH2)n.CH(R1).Halogen, in the presence of a metal hydroxide, carbonate or bicarbonate, or an organic base, for example, an excess of the piperazine, as condensing agent; (3) hydrogenating a mixture of piperazine and a ketone of the formula: C6H5.(CH2)n.CO.R1 with hydrogen under pressure at 60 DEG  to 180 DEG C. in the presence of a hydrogenation catalyst such as a nickel, cobalt or a noble metal catalyst and (4) treating a primary amine of the formula: C6H5.(CH2)n.CH(R1).NH2 with an alkylenedihalide either by heating to 160-180 DEG  C. or by reacting the amine and the alkylene dihalide in aqueous solution, or in an organic solvent, in the presence of a metal hydroxide, carbonate or bicarbonate as an acid-binding agent.  In examples there are prepared the 1 : 4 - di - (a  - methyl - phenethyl) -; 1 : 4-di - (a  - methyl - g  - phenyl - propyl -; 1 : 4-di - (a  - methyl - benzyl) -; 1 : 4 - di - (5 - phenyl - 1 - methyl - pentyl) - and 1 : 4 - di - (a  - n - octyl - benzyl) -, piperazines; the products being isolated as their hydrobromides.  Specification 705,979 is referred to.
Patent GB-532086-A (GB)
Title: Improvements in or relating to children's cots
IPC: A47D7/00
Filed: 1939-08-16
Abstract: 532,086. Furniture joints. BAVEYSTOCK, R. T. Aug. 16, 1939, No. 23649. [Class 52 (ii)] The side member of a child's dismemberable cot is jointed to the end members by a screw and socket connection. The screw 10 as shown comprises a head, a shank to pass through the corner post 4 and a threaded portion 11 to engage a screwed socket 12 fixed in an aperture 13 in the top or bottom rail 5 of the side member. A retaining plate 14 fitted on the shank which is of less diameter than the threaded portion is adapted to be secured to the corner post 4 and prevents the complete withdrawal of the screw 10. The side member is also suppported at the other rail 6 by a bent screw member 8 adapted to enter a socket 9 or by 'a bent plate member having a slot to engage the shank of a projecting screw or the like.
Patent GB-286324-A (GB)
Title: Method of introducing semi-liquid materials into high pressure vessels
IPC: F04B53/14
Filed: 1926-09-27
Abstract: 286,324. Synthetic Ammonia & Nitrates, Ltd., and Humphrey, R. A. Sept. 27, 1926. Direct liquid - pres. sure apparatus.-Semiliquids are introduced into a high-pressure vessel A from a vessel B by pumping a displacing fluid into the latter. The displacing fluid is drawn from a reservoir C by a pump D and enters the vessel B through a valve I. When all the liquid has been forced from the vessel B, a valve E is opened to allow the fluid to return to the vessel C. Valve E is then closed and a valve G opened to admit fresh liquid to the vessel B. An atmospheric valve H is opened when the valves E and G are open. A gauge F indicates the liquid level in the vessel C. In the form shown in Fig. 2, a differential piston K is arranged between the displacing fluid and the liquid in the vessel B. Specification 192,691, [Class 102 (i), Pumps &c.], is referred to.