baber/WOPTO huggingface dataset:
Patent GB-644429-A (GB)
Title: Improvements in or relating to the treatment of polythene
IPC: B29C48/67
Filed: 1947-08-28
Abstract: 644,429. Extruding polythene. DU PONT DE NEMOURS & CO., E. I. Aug. 28, 1947, No. 23841. Convention date, Aug. 28, 1946. [Class 87 (ii)] [Also in Group II] A process for improving the extrusion properties of polythene, especially with a view to its use in coating wires, comprises forcing polythene at a temperature above 100‹ C. through a confined space between concentric surfaces, one of which is rotating with respect to the other at a peripheral speed of at least 90 feet per minute, so that the polythene is subjected to a shearing force at right angles to the direction of flow, the confined space having a clearance factor of at least 40. The concentric surfaces are formed by a cylinder 4, known as a smearhead, rotating in a cylindrical tube, and the clearance factor is defined as the length 20 of the smearhead multiplied by the reciprocal of the clearance between the smearhead and the tube. The polythene is introduced .at 1, preferably in powdered form, and is forced towards the smearhead by an Archimedean screw 2. To produce the maximum working effect on the polythene the temperature should be as low as practicable and a cooling chamber 7 is provided round the smearhead. A jacket 5 is used to heat or cool the polythene, as required, in its advance along the Archimedean screw. The treated polythene is discharged through an opening 21 or it may be passed directly through a die to shape it according to the ordinary method of extrusion. The Archimedean screw may have a diminishing pitch, as shown. To give greater flexibility of operation the smearhead 4 and screw 2 may be separately driven at different speeds and in different directions. The Specification describes a method of testing the suitability of a polythene for coating wires according to which it is extruded through a standard type of wire coating machine under stated conditions of die dimension, temperature, extrusion pressure, and wire diameter and the wire is drawn through at increasing speeds. As the speed of the wire rises the surface of the polythene coating it becomes wavy and the point at which the waviness is unsatisfactory is the measure of the suitability of the polythene for wire coating. The Specification also mentions making sheets from polythene treated according to the invention.
Patent GB-785997-A (GB)
Title: Method for the recovery of uranium products from solutions containing hexavalent uranium
IPC: C01G43/00
Filed: 1955-08-18
Abstract: Ammonium diuranate is precipitated from solutions of hexavalent uranium by adding thereto one or more amides and causing the amides to hydrolyse therein so that the pH increases and the uranate is precipitated.  Suitable amides are carbamide and acetamide and the hydrolysis is effected by heating, preferably to 90-115 DEG  C.  In order to separate the uranium from impurities such as cadmium, the rare earth metals, mercury, beryllium, iron, chromium, nickel, cobalt, zinc, lead, manganese, magnesium and calcium it is desirable that the final pH is within the range 4.5-7; this may be achieved by the addition of ammonium salts such as the nitrate or sulphate to the initial solution before the addition of the amide.  According to examples: (1) solutions of uranyl chloride, sulphate and nitrate were separately treated with ammonium hydroxide to adjust the pH to 3 and carbamide added.  The solution was heated to 100-103 DEG  C. while stirring and the precipitation of the diuranate was complete within two hours. The sedimentation was quicker than that of a precipitate obtained by treating the uranium containing solutions with ammonium hydroxide.  (2) A solution of uranyl nitrate was adjusted to a pH of 3 with ammonium hydroxide and acetamide added thereto after which the solution was heated to 100-103 DEG  C. whilst stirring. The uranium commenced to precipitate within 30 minutes and the final pH was 4.6.
Patent GB-296005-A (GB)
Title: Improvements in thermionic valves
IPC: H01J19/44
Filed: 1928-08-22
Abstract: 296,005. Loewe-Audion Ges., and Wienecke, B. Aug. 22, 1927, [Convention date]. Vacuum tubes.-The electrode supports and other glass parts of a valve, particularly of a multiple valve, which are exposed to high temperatures, are made of a glass such as Jena apparatus glass which is a good insulator at those temperatures. In the valve shown, the supports 3, 4 for the voltage amplifying systems 1, 2, and the supports 6 for the power amplification system. 5 are made of such a glass, as may also be the supports 7, 8 and the foot 9. Metal wires should be cooled at the ends when fused into the glass supports. A glass satisfying the requirements has the approximate composition silica 65 per cent, boron trioxide 15 per cent, barium oxide 12. per cent, aluminium oxide 4 per cent and arsenic pentoxide, 3.5 per cent.
Patent GB-180952-A (GB)
Title: A side splash guard for the wheels of heavy motor vehicles
IPC: B60B7/00
Filed: 1921-09-10
Abstract: 180,952. Turner, J. H. Sept. 10, 1921. Mud-guards rotating with wheels.-A mud-guard consists of segments A, held by their stems, passing through rings B, B and pressed outwardly by springs F acting between the inner ring B and collars D on the stems. The rings B, B are held between grooves in side plates H, H. The inner side plate H has bayonet-slots engaging studs on the wheel rim, and is secured by thumb-screws on the studs.
Patent GB-903672-A (GB)
Title: Improvements relating to radial cylinder pumps
IPC: F04B23/10
Filed: 1959-07-14
Abstract: 903,672. Reciprocating pumps. RECHERCHES ETUDES PRODUCTION S.a.r.L. July 14, 1959 [Aug. 20, 1958; Feb. 23, 1959; June 2, 1959], No. 24169/59. Class 102(1). [Also in Group XXVI] A radial cylinder pump is fed by a centrifugal pump 16 which draws liquid through the hollow drive shaft and delivers it to an inlet chamber 14 with which inlet ports 21 in the pistons 5 communicate when they clear the cylinder bore. The ports 21 are " rectangular " and form part of a cylinder. The outlet from the cylinders is controlled by a common elastic ring 20. Specification 837,081 is referred to.
Patent GB-194241-A (GB)
Title: Improvements relating to quadrant winding chains employed on self-acting mules and twiners
IPC: D01H3/12
Filed: 1922-09-07
Abstract: 194,241. Pearce, R. H. Sept. 7, 1922. Mules and twiners.-The quadrant chain A is connected to the quadrant nut B through a spring a<2>. A bolt a is attached to the chain A and slides through a box a<1>. The spring is mounted between washers a<3>, a' and adjusted by a nut a<5>. The head a<8> of the bolt engages between lugs a<9> on the box. The box is provided with a hole a<7> to allow of adjustment of the nut a<5>; or an open link may be used in place of the box.
Patent GB-699323-A (GB)
Title: Improvements in auxiliary driving means for bicycles
IPC: F02B61/02
Filed: 1951-10-17
Abstract: 699,323. Two-stroke engines; driving gear. GILARDI, C. Oct. 17, 1951 [Oct. 30, 1950], No. 24283/51. Class 7 (ii) [Also in Group XXXI] A hollow roller 18 frictionally engaging the rear tyre 19 of a cycle covers a hub 5 projecting from the engine casing 4 and is fixed to the end of a driving shaft 8, the portion of which within the casing carries a flywheel 14 and an eccentric 9 on which operates a connecting rod 3. Balance plates 10, 11 may be disposed on each side of the eccentric, and a stator 15 may, in conjunction with the flywheel, form a generator for lighting and ignition. The engine may be attached to the cycle frame and between the pedal cranks 20, 21. In a modification, the plates 10, 11 are replaced by a balance weight on the flywheel. Specifications 731/96, [Class 7], 159,830, [Class 7 (ii)], and 621,131, [Group XXXI], are referred to.
Patent GB-158301-A (GB)
Title: Improvements in clip devices for garments and other purposes
IPC: D06F55/00
Filed: 1919-10-06
Abstract: 158,301. Colson, S. A. Oct. 6, 1919. Clips, pivoted-jaw.-In a clip of the type shown, the spring d is passed over, under, or around a bar f, Fig. 1, or lugs j, Fig. 4 formed in the jaw a, and is secured by pressing the parts together. In a modification, Fig. 6, the part o forming the end of the spring is notched at m to engage the lugs k by which the pivot pin is carried.
Patent GB-287792-A (GB)
Title: Improvements in and relating to brush-holders for dynamoelectric machines
IPC: H01R39/38
Filed: 1927-09-15
Abstract: 287,792. Schunk, L., Ebe, H., and Schwalm, J. Sept. 15, 1927. Addition to 275,989. Brush-holders.-In a modification of the invention of the parent Specification, the worm is mounted in bearings in the brush-holder frame and the worm wheel is rotatable on the spindle of the spring, but can be coupled thereto in one portion by a catch connected to the spindle. The spindle m has a pivoted catch d<1> which can engage with a notch r' in the worm wheel e. In this position the pressure finger g bears on the brush k and fine adjustment of the spring pressure is effected by rotating the worm c. To remove the brush, the catch d<1> is released and the spindle can then be rocked to lift the finger g. After replacing the brush, the catch d' is again engaged with the notch r<1> whereupon the spring pressure is the same as before.
Patent GB-481030-A (GB)
Title: Improvements in or relating to reels for hose pipes, cables and the like
IPC: B65H75/44
Filed: 1936-09-07
Abstract: 481,030. Hose &c. reels. PILLIN, J. B. Sept. 7, 1936, No. 24384. [Class 99 (ii)] In a self-coiling reel for hose pipes, cables, &c. of the kind in which the reel is controlled by a clockspring and is provided with pawl and ratchet mechanism to prevent rotation of the reel when the required length of hose has been paid out, the counterweighted pawl 20 is connected by a chain 36 to one arm 33 of a bell-crank lever the other arm 34 of which is fitted with a spring-pressed leather pad 37 for frictional contact with a side plate 1 of said reel. The Figure shows the reel after drawing off a length of hose therefrom. When it is desired to recoil the hose, a further short length of hose is drawn off the reel so as to rotate the reel in the direction of the arrow and locate the pawl about two-thirds of the way along the next succeeding tooth of the ratchet 19, whereupon the hose is released. This permits the clockspring, not shown, to commence rotating the reel in a clockwise direction, and at the same time the arm 34 of the bell-crank lever is constrained by the friction pad 37 to follow the reel, thus raising the crank arm 33 and consequently disengaging the pawl from the ratchet and permitting continued rotation of the reel. When the free end of the hose approaches the reel the movement of the hose is checked, and a slight pull on the hose will suffice to move the reel and crank arm 34 sufficiently anticlockwise to slacken the chain 36 and effect re-engagement of the pawl and ratchet.
Patent GB-502023-A (GB)
Title: Apparatus for the common operation of heat radiators, more particularly incandescent lamps and electric discharge tubes
IPC: H05B41/19
Filed: 1937-09-07
Abstract: 502,023. Supply systems for discharge lamps and incandescent lamps. QUARZ. LAMPEN GES. Sept. 7, 1937, No. 24401. Convention date, Sept. 7, 1936. [Class 38 (iv)] The filament of a heat radiator such as an incandescent filament lamp operated in common with a mercury high - pressure arc discharge tube is supplied with current of a limited voltage during the starting or running up period by making the voltage dependent upon anindependent source and also upon the working conditions of the discharge tube. In the arrangements shown in Fig. 1, in which the filament 6 is located in the discharge tube 1, the electrodes of the discharge lamp are supplied from the A.C. source 3 through the secondary winding 5 of a transformer, while the filament 6 is supplied from the same source through the secondary winding 7 which is close coupled with primary winding 4. The filament voltage is, however, also dependent upon the current in the discharge circuit through the medium of the additional transformer 8, the secondary winding of which is opposed to the winding 7. In a modification, Fig. 3, the additional transformer is replaced by a further secondary winding 19 close coupled with winding 5. To prevent overloading of the filament should the arc fail to strike or be extinguished during the starting period, a main switch 11 is closed by winding 12 in the discharge tube circuit in conjunction with switch 13 which may short-circuit the discharge tube. When starting, switches 13 and 11 are closed by hand in succession and the operating button then released, thereby open. ing switch 13. Switch 11 remains closed, however, as long as winding 12 is energized by current flowing through the discharge tube.
Patent GB-471291-A (GB)
Title: Improvements in or relating to copper base alloys
IPC: C22C9/00
Filed: 1936-09-08
Abstract: Copper alloys contain 0,1-0,45 per cent of lead, 0,1-6,5 per cent of silicon, and 0,01-3 per cent of manganese.
Patent GB-601074-A (GB)
Title: Improvements in or relating to aircraft navigation apparatus
IPC: G01C21/20
Filed: 1945-09-21
Abstract: 601,074. Indicating-apparatus. REILLY, H. L., and RING, R. H. Sept. 21, 1945, No. 24507. [Class 106 (iv)] In an aircraft navigation apparatus for determining a component of the wind velocity or an error in the setting of such a component into a ground-position indicator, movements according to time and distance are applied to the pivot 15 of a centrally articulated link 11, 12 and to a pivot 14 connecting one arm of the articulated link to a longer link 17 respectively and the movement of a pivot 13, connecting the other arm of the articulated link to a link 16 of equal length, is indicated, the links 16 and 17 swinging about fixed pivots 18 and 19 and the system having a zero position as shown by the broken lines, Fig. 2. Apparatus for determining automatically the speed and sense of the N-S and E-W components of the wind velocity as an aircraft flies round a closed circuit has a linkage for each component. The articulation 15, Fig. 3, is moved by a rack-andpinion mechanism driven from a shaft 21 rotated at constant speed. The link 17 is L- shaped and is moved according to air distance travelled in the N-S direction by means of a cam 35 carried by a shaft driven by mechanical or electrical means from an air-position indicator. A radial slot is formed in the link 17, a pin 14 secured to the arm 12 of the articulated link engaging in this slot and in a 'fixed guide slot 24a. The wind speed, which is the quotient of the distance movement divided by the time movement, is indicated on a scale 23a by a pointer secured to the shaft which forms the fixed pivot 18. The sense of the wind speed is indicated by a pointer which co-operates with a marked disc 43 secured to the distance shaft 22, the cam 35 being symmetrically arranged with respect to the link 17 in the initial position and the gearing to the shaft 22 being such that it does not rotate more than 180 degrees during a circuit of the aircraft. A similar linkage indicates the east-west component of the wind velocity, and the time shaft 31 of the second linkage is connected with that of the first linkage by means of a rack and pinions. The drive to the time and' distance shafts is by means of friction couplings 36, 37 so that the shafts may be re-set by a rack 38 engaging a pinion 39 on an upper part of the time shaft and having thrust members 40 engaging cams 41 on the distance shafts. A lost-motion coupling 42 connects the upper and lower parts of the time shaft 21 in order to prevent the articulation 15 from returning to the zero position in which the linkage is locked. The drive to the shafts is switched on and off manually at the commencement and cessation of a circuit. In order to indicate the initial position of the shafts and also how much time remains for the completion of a circuit, the re-setting rack 38 may be provided with a scale 46 to co-operate with a fixed pointer. This rack may also carry a cam to operate a switch mechanism and so cut off the drive to the shafts when the maximum circuit time is reached.
Patent GB-156882-A (GB)
Title: Improvements relating to building blocks formed of plastic material
IPC: E04B2/40
Filed: 1919-10-08
Abstract: 156,882. Nouullet, F. A. Oct. 8, 1919. Facing -blocks. - Walls are formed of concrete filled in between concrete or like facing blocks 2 having embedded in them projecting anchorage members 4 which for transport are bent into a recess 3 in the face of the block, as shown in Fig. 5. In the blocks shown, the bendable metal anchorage members 4 are integral with a longitudinal portion 5 embedded in the block.
Patent GB-283265-A (GB)
Title: Method of preparing a concentrate of cod-liver oil rich in vitamin-a and other active principles
IPC: A61K31/59
Filed: 1926-10-05
Abstract: 283,265. Kawai, K. Oct. 5, 1926. Medicines for internal use. - A concentrate of cod-liver oil rich in vitamin A is prepared by saponifying 50-75 per cent of the saponifiable portion of ordinary cod-liver oil and then separating the unsaponified oil, containing vitamin A and other effective ingredients, from the saponified matter. The oil may be saponified by adding caustic soda and stirring for about 2 hours at a temperature below 60‹ C. Separation of the saponified and unsaponified matters may be effected by allowing the mass to stand, when the saponified matter sinks to the bottom; the oil at the top is removed, saponified matter remaining therein is extracted bv washing &c., and the oil is then further refined in a centrifugal separating apparatus. Or milk of lime may be added and the mass heated slightly, steam being introduced to prevent oxidation, and, after cooling, the calcium soap is separated from the mass by a filter press or a centrifugal apparatus and then by allowing the mass to stand etc.; or milk of lime and alcohol may be added to the cod-liver oil to effect the saponification.
Patent GB-1470855-A (GB)
Title: Method of recovering liquid hydrocarbons from underground  formations
IPC: E21B43/16
Filed: 1974-06-04
Abstract: 1470855 Recovering oil SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 4 June 1974 24681/74 Heading E1F The percentage of oil recovered from an underground fractured, e.g. limestone formation is increased by introducing carbon dioxide into the formation. The carbon dioxide may be applied in the gaseous form in either a pure state or mixed with another gas, e.g. methane or ethane; dissolved in a liquid, e.g. water; or in situ by injecting oxygen into the formation and allowing combustion of the oil with the oxygen. The carbon dioxide may be introduced into a natural or artificially formed gas cap at any level or into the fractures within the oil filled region of the formation. The rate of introduction of the carbon dioxide into the formation is preferably insufficient to substantially increase the pressure within the fractures.
Patent GB-1253330-A (GB)
Title: Azomethines forming enantiotropic nematic phases
IPC: C09K19/22
Filed: 1970-05-22
Abstract: 1,253,330. Azomethines. FARBWERKE HOECHST A.G. 22 May, 1970 [3 June, 1969], No. 24837/70. Heading C2C. The invention comprises compounds of the formula wherein R represents CH 3  or C 2 H 5 , and mixtures of these two compounds with each other. They may be obtained by condensing 4-n-butyl aniline with the appropriate 4-alkoxybenzaldehyde. Examples are given for the preparation of the compounds.
Patent GB-336044-A (GB)
Title: Improvements in trusses
IPC: A61F5/30
Filed: 1929-08-15
Abstract: 336,044. Lemarinier, G. Aug. 15, 1929. Trusses.-A truss comprises two frontal pads attached to a dorsal pad by two spring bands of stainless metal, which enter slotted flanges 10 on the back plates 1 of the pads, and have holes 8, 9 engaging studs 5, 7 on the said plates. The plates 1 may be interchangeable and perforated with holes stamped inwards to secure them to the frontal pads 12, or secured in known manner as shown. The attachment band passes through a slot in the flange 10, over the stud 5, which may be fixed, or mounted on a spring 4, a key hole opening 8 engaging the neck of the stud 7, and the stud 5 entering the hole 9 when the band is pulled tight. The inclination of the pads may be varied by having a number of studs 7. The dorsal pad has two sets of studs to engage the two spring bands.
Patent GB-299161-A (GB)
Title: Improvements relating to portable or self-contained wireless receiving apparatus
IPC: H01Q1/24
Filed: 1927-09-23
Abstract: 299,161. Farrar, C. Sept. 23, 1927. Receiving-sets, construction of.-The frame aerial f of a portable receiver is wound in a recess c in the framework of the case b. The recess is preferably divided into two portions by a central rib e, the second recess serving to accommodate a winding for reception on a different wave-length range, or for providing reaction. The aerial is covered by strips g resting on shoulders d and on the rib e, and lying flush with the exterior of the case b on their outer faces.
Patent GB-167971-A (GB)
Title: Improvements in or relating to folding devices for bag or capsule making machines
IPC: B31B3/32
Filed: 1920-09-01
Abstract: 167,971. Orstr÷m, G. Sept. 1, 1920. Paper bags, making.-Relates to machines for making paper bags or capsules in which a blank is folded around a mandrel, and consists in making the fold by means of rollers between which the blank is forced by the movement of the mandrel. The mandrels 1, Fig. 3, are carried by a disc or by arms rotating in a vertical plane, or they may be attached to a chain or the like moving in an endless path. A gummed blank 3 is fed on to two top folders 4, 5 and the mandrel is then moved downwards through the space between the folders, carrying with it the blank. During this movement, two rollers 6, 7 mounted on pivoted arms 10, 11 drawn together by springs, bear against the mandrel and wrap the paper around it, as shown in Fig. 4. The mandrel stops in this position while the upstanding edges of the blank are folded down on to the mandrel by inward movement of the folders 4, 5. A presser 8, associated with the mandrel, then presses the flaps to ensure that they stick together. A third roller 9, mounted on a pivotal arm 20, which is drawn upwards by a spring, holds the blank against the lower side of the mandrel during the folding operation. The end of the bag is then formed by any suitable mechanism and the mandrel then passes between spring-actuated presser rollers which form sharp edges at the end of the bag.
Patent GB-1022315-A (GB)
Title: Improvements relating to gas-filtering apparatus
Inventor: WIGLEY ALBERT FREDERICK
IPC: B01D46/04
Filed: 1963-06-25
Abstract: 1,022,315. Gas-filtering devices. VISCO Ltd. Sept. 24, 1964 [June 25, 1963], No. 25244/63. Heading BIT. In a gas filter comprising a plurality of compartments 10 containing textile filter bags 44 and having at their upper ends dampers 61, 62 controlling respectively outlet of filtered air and inlet of scavenging air for reverse-flow cleaning of the bags, each compartment has a reversible electric motor 11 driving either one of two sprockets, depending on its direction of drive, one sprocket 13 driving a damper changeover mechanism 50-68, the other sprocket 14 driving a bag-shaking mechanism 21-27, and a pair of limit switches 71, 72 and a timer effect a cleaning operation in which motor 11 first turns one way closing damper 61 and opening damper 62, whereby switch 71 stops the motor, after an interval motor 11 turns the opposite way and shakes the bags, during the reverse flow, and, a short period after bag-shaking, motor 11 turns in its first direction and opens and closes dampers 61, 62 to restore normal filtration flow, switch 72 stopping the motor on closure of damper 62. This cycle of operations may be controlled by a central timer or by a pressure-sensitive device. The bags in each compartment are each supported at their. upper, closed, ends by an end strap (45) passing over a pivoted angle bar (36), whose toothed edge (43) grips the free end of the strap, Fig. 5 (not shown), whereby bag tension is adjustable. Bars (36) are supported on one or other of two members 32, which are symmetrically rocked with their support rods 21 by motor 11.